First Observation of the Radiative Decay Λb0 → Λγ

(LHCb Collaboration)

doi:10.1103/PhysRevLett.123.031801

First Observation of the Radiative Decay Λb0 → Λγ

(LHCb Collaboration)

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The radiative decay Λb0→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7 fb-1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K∗0γ decay as a normalization mode and is found to be B(Λb0→Λγ)=(7.1±1.5±0.6±0.7)×10-6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon.

Original language	English
Article number	031801
Pages (from-to)	1-11
Number of pages	11
Journal	Physical Review Letters
Volume	123
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.123.031801
Publication status	Published - 15 Jul 2019

Funding

We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ, and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG, and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MSHE (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland), and OSC (USA). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from AvH Foundation (Germany); EPLANET, Marie Sk\u0142odowska-Curie Actions, and ERC (European Union); ANR, Labex P2IO and OCEVU, and R\u00E9gion Auvergne-Rh\u00F4ne-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, and the Thousand Talents Program (China); RFBR, RSF, and Yandex LLC (Russia); GVA, XuntaGal, and GENCAT (Spain); the Royal Society and the Leverhulme Trust (United Kingdom); Laboratory Directed Research and Development program of LANL (USA).

Funders	Funder number
Not added	ST/J004332/1, ST/N000250/1, ST/K003410/1, 1796908, ST/N000331/1, ST/L003163/1, ST/N000242/1
Horizon 2020 Framework Programme	792684
Science and Technology Facilities Council	ST/N000234/1, GRIDPP

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1103/PhysRevLett.123.031801

Persistent URL (handle)

Persistent link

Cite this

@article{55e7fd35ee534597b2c541da4c93ad3d,

title = "First Observation of the Radiative Decay Λb0 → Λγ",

abstract = "The radiative decay Λb0→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7 fb-1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K∗0γ decay as a normalization mode and is found to be B(Λb0→Λγ)=(7.1±1.5±0.6±0.7)×10-6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon.",

author = "R. Aaij and {Abell{\'a}n Beteta}, C. and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and F. Archilli and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Battig and V. Battista and A. Bay and F. Bedeschi and I. Bediaga and A. Beiter and Bel, {L. J.} and S. Belin and N. Beliy and V. Bellee and N. Belloli and K. Belous and I. Belyaev and G. Bencivenni and E. Ben-Haim and S. Benson and S. Beranek and A. Berezhnoy and R. Bernet and D. Berninghoff and E. Bertholet and A. Bertolin and C. Betancourt and F. Betti and Bettler, {M. O.} and Ia Bezshyiko and S. Bhasin and J. Bhom and Bieker, {M. S.} and S. Bifani and P. Billoir and A. Birnkraut and A. Bizzeti and M. Bj{\o}rn and Blago, {M. P.} and T. Blake and F. Blanc and S. Blusk and D. Bobulska and V. Bocci and {Boente Garcia}, O. and T. Boettcher and A. Bondar and N. Bondar and S. Borghi and M. Borisyak and M. Borsato and M. Boubdir and Bowcock, {T. J.V.} and C. Bozzi and S. Braun and M. Brodski and J. Brodzicka and {Brossa Gonzalo}, A. and D. Brundu and E. Buchanan and A. Buonaura and C. Burr and A. Bursche and Butter, {J. S.} and J. Buytaert and W. Byczynski and S. Cadeddu and H. Cai and R. Calabrese and S. Cali and R. Calladine and M. Calvi and {Calvo Gomez}, M. and A. Camboni and P. Campana and {Campora Perez}, {D. H.} and L. Capriotti and A. Carbone and G. Carboni and R. Cardinale and A. Cardini and P. Carniti and {Carvalho Akiba}, K. and G. Casse and M. Cattaneo and G. Cavallero and R. Cenci and Chapman, {M. G.} and M. Charles and Ph Charpentier and G. Chatzikonstantinidis and M. Chefdeville and V. Chekalina and C. Chen and S. Chen and Chitic, {S. G.} and V. Chobanova and M. Chrzaszcz and A. Chubykin and P. Ciambrone and {Cid Vidal}, X. and G. Ciezarek and F. Cindolo and Clarke, {P. E.L.} and M. Clemencic and Cliff, {H. V.} and J. Closier and V. Coco and Coelho, {J. A.B.} and J. Cogan and E. Cogneras and L. Cojocariu and P. Collins and T. Colombo and A. Comerma-Montells and A. Contu and G. Coombs and S. Coquereau and G. Corti and {Costa Sobral}, {C. M.} and B. Couturier and Cowan, {G. A.} and Craik, {D. C.} and A. Crocombe and {Cruz Torres}, M. and R. Currie and {Da Silva}, {C. L.} and E. Dall'Occo and J. Dalseno and C. D'Ambrosio and A. Danilina and P. D'Argent and A. Davis and {De Aguiar Francisco}, O. and {De Bruyn}, K. and {De Capua}, S. and {De Cian}, M. and {De Miranda}, {J. M.} and {De Paula}, L. and {De Serio}, M. and {De Simone}, P. and {De Vries}, {J. A.} and Dean, {C. T.} and W. Dean and D. Decamp and {Del Buono}, L. and B. Delaney and Dembinski, {H. P.} and M. Demmer and A. Dendek and D. Derkach and O. Deschamps and F. Desse and F. Dettori and B. Dey and {Di Canto}, A. and {Di Nezza}, P. and S. Didenko and H. Dijkstra and F. Dordei and M. Dorigo and {Dos Reis}, {A. C.} and {Dosil Su{\'a}rez}, A. and L. Douglas and A. Dovbnya and K. Dreimanis and L. Dufour and G. Dujany and P. Durante and Durham, {J. M.} and D. Dutta and R. Dzhelyadin and M. Dziewiecki and A. Dziurda and A. Dzyuba and S. Easo and U. Egede and V. Egorychev and S. Eidelman and S. Eisenhardt and U. Eitschberger and R. Ekelhof and L. Eklund and S. Ely and A. Ene and S. Escher and S. Esen and T. Evans and A. Falabella and C. F{\"a}rber and N. Farley and S. Farry and D. Fazzini and M. F{\'e}o and {Fernandez Declara}, P. and {Fernandez Prieto}, A. and F. Ferrari and {Ferreira Lopes}, L. and {Ferreira Rodrigues}, F. and {Ferreres Sole}, S. and M. Ferro-Luzzi and S. Filippov and Fini, {R. A.} and M. Fiorini and M. Firlej and C. Fitzpatrick and T. Fiutowski and F. Fleuret and M. Fontana and F. Fontanelli and R. Forty and {Franco Lima}, V. and M. Frank and C. Frei and J. Fu and W. Funk and E. Gabriel and {Gallas Torreira}, A. and D. Galli and S. Gallorini and S. Gambetta and Y. Gan and M. Gandelman and P. Gandini and Y. Gao and {Garcia Martin}, {L. M.} and {Garc{\'i}a Pardi{\~n}as}, J. and {Garcia Plana}, B. and {Garra Tico}, J. and L. Garrido and D. Gascon and C. Gaspar and G. Gazzoni and D. Gerick and E. Gersabeck and M. Gersabeck and T. Gershon and D. Gerstel and Ph Ghez and V. Gibson and Girard, {O. G.} and {Gironella Gironell}, P. and L. Giubega and K. Gizdov and Gligorov, {V. V.} and C. G{\"o}bel and D. Golubkov and A. Golutvin and A. Gomes and Gorelov, {I. V.} and C. Gotti and E. Govorkova and Grabowski, {J. P.} and {Graciani Diaz}, R. and {Granado Cardoso}, {L. A.} and E. Graug{\'e}s and E. Graverini and G. Graziani and A. Grecu and R. Greim and P. Griffith and L. Grillo and L. Gruber and {Gruberg Cazon}, {B. R.} and C. Gu and E. Gushchin and A. Guth and Yu Guz and T. Gys and T. Hadavizadeh and C. Hadjivasiliou and G. Haefeli and C. Haen and Haines, {S. C.} and B. Hamilton and Q. Han and X. Han and Hancock, {T. H.} and S. Hansmann-Menzemer and N. Harnew and T. Harrison and C. Hasse and M. Hatch and J. He and M. Hecker and K. Heinicke and A. Heister and K. Hennessy and L. Henry and M. He{\ss} and J. Heuel and A. Hicheur and {Hidalgo Charman}, R. and D. Hill and M. Hilton and Hopchev, {P. H.} and J. Hu and W. Hu and W. Huang and Huard, {Z. C.} and W. Hulsbergen and T. Humair and M. Hushchyn and D. Hutchcroft and D. Hynds and P. Ibis and M. Idzik and P. Ilten and A. Inglessi and A. Inyakin and K. Ivshin and R. Jacobsson and S. Jakobsen and J. Jalocha and E. Jans and Jashal, {B. K.} and A. Jawahery and F. Jiang and M. John and D. Johnson and Jones, {C. R.} and C. Joram and B. Jost and N. Jurik and S. Kandybei and M. Karacson and Kariuki, {J. M.} and S. Karodia and N. Kazeev and M. Kecke and F. Keizer and M. Kelsey and M. Kenzie and T. Ketel and B. Khanji and A. Kharisova and C. Khurewathanakul and Kim, {K. E.} and T. Kirn and Kirsebom, {V. S.} and S. Klaver and K. Klimaszewski and S. Koliiev and M. Kolpin and R. Kopecna and P. Koppenburg and I. Kostiuk and O. Kot and S. Kotriakhova and M. Kozeiha and L. Kravchuk and M. Kreps and F. Kress and S. Kretzschmar and P. Krokovny and W. Krupa and W. Krzemien and W. Kucewicz and M. Kucharczyk and V. Kudryavtsev and Kunde, {G. J.} and Kuonen, {A. K.} and T. Kvaratskheliya and D. Lacarrere and G. Lafferty and A. Lai and D. Lancierini and G. Lanfranchi and C. Langenbruch and T. Latham and C. Lazzeroni and {Le Gac}, R. and R. Lef{\`e}vre and A. Leflat and F. Lemaitre and O. Leroy and T. Lesiak and B. Leverington and H. Li and Li, {P. R.} and X. Li and Y. Li and Z. Li and X. Liang and T. Likhomanenko and R. Lindner and F. Lionetto and V. Lisovskyi and G. Liu and X. Liu and D. Loh and A. Loi and I. Longstaff and Lopes, {J. H.} and G. Loustau and Lovell, {G. H.} and D. Lucchesi and {Lucio Martinez}, M. and Y. Luo and A. Lupato and E. Luppi and O. Lupton and A. Lusiani and X. Lyu and F. Machefert and F. Maciuc and V. Macko and P. Mackowiak and S. Maddrell-Mander and O. Maev and K. Maguire and D. Maisuzenko and Majewski, {M. W.} and S. Malde and B. Malecki and A. Malinin and T. Maltsev and H. Malygina and G. Manca and G. Mancinelli and D. Marangotto and J. Maratas and Marchand, {J. F.} and U. Marconi and {Marin Benito}, C. and M. Marinangeli and P. Marino and J. Marks and Marshall, {P. J.} and G. Martellotti and M. Martinelli and {Martinez Santos}, D. and {Martinez Vidal}, F. and A. Massafferri and M. Materok and R. Matev and A. Mathad and Z. Mathe and V. Matiunin and C. Matteuzzi and Mattioli, {K. R.} and A. Mauri and E. Maurice and B. Maurin and M. McCann and A. McNab and R. McNulty and Mead, {J. V.} and B. Meadows and C. Meaux and N. Meinert and D. Melnychuk and M. Merk and A. Merli and E. Michielin and Milanes, {D. A.} and E. Millard and Minard, {M. N.} and L. Minzoni and Mitzel, {D. S.} and A. M{\"o}dden and A. Mogini and Moise, {R. D.} and T. Momb{\"a}cher and Monroy, {I. A.} and S. Monteil and M. Morandin and G. Morello and Morello, {M. J.} and J. Moron and Morris, {A. B.} and R. Mountain and F. Muheim and M. Mukherjee and M. Mulder and D. M{\"u}ller and J. M{\"u}ller and K. M{\"u}ller and V. M{\"u}ller and Murphy, {C. H.} and D. Murray and P. Naik and T. Nakada and R. Nandakumar and A. Nandi and T. Nanut and I. Nasteva and M. Needham and N. Neri and S. Neubert and N. Neufeld and R. Newcombe and Nguyen, {T. D.} and C. Nguyen-Mau and S. Nieswand and R. Niet and N. Nikitin and Nolte, {N. S.} and A. Oblakowska-Mucha and V. Obraztsov and S. Ogilvy and O'Hanlon, {D. P.} and R. Oldeman and Onderwater, {C. J.G.} and Osborn, {J. D.} and A. Ossowska and {Otalora Goicochea}, {J. M.} and T. Ovsiannikova and P. Owen and A. Oyanguren and Pais, {P. R.} and T. Pajero and A. Palano and M. Palutan and G. Panshin and A. Papanestis and M. Pappagallo and Pappalardo, {L. L.} and W. Parker and C. Parkes and G. Passaleva and A. Pastore and M. Patel and C. Patrignani and A. Pearce and A. Pellegrino and G. Penso and {Pepe Altarelli}, M. and S. Perazzini and D. Pereima and P. Perret and L. Pescatore and K. Petridis and A. Petrolini and A. Petrov and S. Petrucci and M. Petruzzo and B. Pietrzyk and G. Pietrzyk and M. Pikies and M. Pili and D. Pinci and J. Pinzino and F. Pisani and A. Piucci and V. Placinta and S. Playfer and J. Plews and {Plo Casasus}, M. and F. Polci and {Poli Lener}, M. and M. Poliakova and A. Poluektov and N. Polukhina and I. Polyakov and E. Polycarpo and Pomery, {G. J.} and S. Ponce and A. Popov and D. Popov and S. Poslavskii and E. Price and C. Prouve and V. Pugatch and {Puig Navarro}, A. and H. Pullen and G. Punzi and W. Qian and J. Qin and R. Quagliani and B. Quintana and Raab, {N. V.} and B. Rachwal and Rademacker, {J. H.} and M. Rama and {Ramos Pernas}, M. and Rangel, {M. S.} and F. Ratnikov and G. Raven and {Ravonel Salzgeber}, M. and M. Reboud and F. Redi and S. Reichert and F. Reiss and {Remon Alepuz}, C. and Z. Ren and V. Renaudin and S. Ricciardi and S. Richards and K. Rinnert and P. Robbe and A. Robert and Rodrigues, {A. B.} and E. Rodrigues and {Rodriguez Lopez}, {J. A.} and M. Roehrken and S. Roiser and A. Rollings and V. Romanovskiy and {Romero Vidal}, A. and Roth, {J. D.} and M. Rotondo and Rudolph, {M. S.} and T. Ruf and {Ruiz Vidal}, J. and {Saborido Silva}, {J. J.} and N. Sagidova and B. Saitta and {Salustino Guimaraes}, V. and {Sanchez Gras}, C. and {Sanchez Mayordomo}, C. and {Sanmartin Sedes}, B. and R. Santacesaria and {Santamarina Rios}, C. and M. Santimaria and E. Santovetti and G. Sarpis and A. Sarti and C. Satriano and A. Satta and M. Saur and D. Savrina and S. Schael and M. Schellenberg and M. Schiller and H. Schindler and M. Schmelling and T. Schmelzer and B. Schmidt and O. Schneider and A. Schopper and Schreiner, {H. F.} and M. Schubiger and S. Schulte and Schune, {M. H.} and R. Schwemmer and B. Sciascia and A. Sciubba and A. Semennikov and Sepulveda, {E. S.} and A. Sergi and N. Serra and J. Serrano and L. Sestini and A. Seuthe and P. Seyfert and M. Shapkin and T. Shears and L. Shekhtman and V. Shevchenko and E. Shmanin and Siddi, {B. G.} and {Silva Coutinho}, R. and {Silva De Oliveira}, L. and G. Simi and S. Simone and I. Skiba and N. Skidmore and T. Skwarnicki and Slater, {M. W.} and Smeaton, {J. G.} and E. Smith and Smith, {I. T.} and M. Smith and M. Soares and Lavra Soares and Sokoloff, {M. D.} and Soler, {F. J.P.} and {Souza De Paula}, B. and B. Spaan and {Spadaro Norella}, E. and P. Spradlin and F. Stagni and M. Stahl and S. Stahl and P. Stefko and S. Stefkova and O. Steinkamp and S. Stemmle and O. Stenyakin and M. Stepanova and H. Stevens and A. Stocchi and S. Stone and S. Stracka and Stramaglia, {M. E.} and M. Straticiuc and U. Straumann and S. Strokov and J. Sun and L. Sun and Y. Sun and K. Swientek and A. Szabelski and T. Szumlak and M. Szymanski and Z. Tang and T. Tekampe and G. Tellarini and F. Teubert and E. Thomas and Tilley, {M. J.} and V. Tisserand and S. T'Jampens and M. Tobin and S. Tolk and L. Tomassetti and D. Tonelli and Tou, {D. Y.} and {Tourinho Jadallah Aoude}, R. and E. Tournefier and M. Traill and Tran, {M. T.} and A. Trisovic and A. Tsaregorodtsev and G. Tuci and A. Tully and N. Tuning and A. Ukleja and A. Usachov and A. Ustyuzhanin and U. Uwer and A. Vagner and V. Vagnoni and A. Valassi and S. Valat and G. Valenti and {Van Beuzekom}, M. and {Van Hecke}, H. and {Van Herwijnen}, E. and {Van Hulse}, {C. B.} and {Van Tilburg}, J. and {Van Veghel}, M. and A. Vasiliev and {Vazquez Gomez}, R. and {Vazquez Regueiro}, P. and {V{\'a}zquez Sierra}, C. and S. Vecchi and Velthuis, {J. J.} and M. Veltri and A. Venkateswaran and M. Vernet and M. Veronesi and M. Vesterinen and {Viana Barbosa}, {J. V.} and D. Vieira and {Vieites Diaz}, M. and H. Viemann and X. Vilasis-Cardona and A. Vitkovskiy and M. Vitti and V. Volkov and A. Vollhardt and {Vom Bruch}, D. and B. Voneki and A. Vorobyev and V. Vorobyev and N. Voropaev and R. Waldi and J. Walsh and J. Wang and M. Wang and Y. Wang and Z. Wang and Ward, {D. R.} and Wark, {H. M.} and Watson, {N. K.} and D. Websdale and A. Weiden and C. Weisser and M. Whitehead and G. Wilkinson and M. Wilkinson and I. Williams and M. Williams and Williams, {M. R.J.} and T. Williams and Wilson, {F. F.} and M. Winn and W. Wislicki and M. Witek and G. Wormser and Wotton, {S. A.} and K. Wyllie and D. Xiao and Y. Xie and H. Xing and A. Xu and M. Xu and Q. Xu and Z. Xu and Z. Xu and Z. Yang and Z. Yang and Y. Yao and Yeomans, {L. E.} and H. Yin and J. Yu and X. Yuan and O. Yushchenko and Zarebski, {K. A.} and M. Zavertyaev and M. Zeng and D. Zhang and L. Zhang and Zhang, {W. C.} and Y. Zhang and A. Zhelezov and Y. Zheng and X. Zhu and V. Zhukov and Zonneveld, {J. B.} and S. Zucchelli and {(LHCb Collaboration)}",

year = "2019",

month = jul,

day = "15",

doi = "10.1103/PhysRevLett.123.031801",

language = "English",

volume = "123",

pages = "1--11",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - First Observation of the Radiative Decay Λb0 → Λγ

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Archilli, F.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Battig, A.

AU - Battista, V.

AU - Bay, A.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Beiter, A.

AU - Bel, L. J.

AU - Belin, S.

AU - Beliy, N.

AU - Bellee, V.

AU - Belloli, N.

AU - Belous, K.

AU - Belyaev, I.

AU - Bencivenni, G.

AU - Ben-Haim, E.

AU - Benson, S.

AU - Beranek, S.

AU - Berezhnoy, A.

AU - Bernet, R.

AU - Berninghoff, D.

AU - Bertholet, E.

AU - Bertolin, A.

AU - Betancourt, C.

AU - Betti, F.

AU - Bettler, M. O.

AU - Bezshyiko, Ia

AU - Bhasin, S.

AU - Bhom, J.

AU - Bieker, M. S.

AU - Bifani, S.

AU - Billoir, P.

AU - Birnkraut, A.

AU - Bizzeti, A.

AU - Bjørn, M.

AU - Blago, M. P.

AU - Blake, T.

AU - Blanc, F.

AU - Blusk, S.

AU - Bobulska, D.

AU - Bocci, V.

AU - Boente Garcia, O.

AU - Boettcher, T.

AU - Bondar, A.

AU - Bondar, N.

AU - Borghi, S.

AU - Borisyak, M.

AU - Borsato, M.

AU - Boubdir, M.

AU - Bowcock, T. J.V.

AU - Bozzi, C.

AU - Braun, S.

AU - Brodski, M.

AU - Brodzicka, J.

AU - Brossa Gonzalo, A.

AU - Brundu, D.

AU - Buchanan, E.

AU - Buonaura, A.

AU - Burr, C.

AU - Bursche, A.

AU - Butter, J. S.

AU - Buytaert, J.

AU - Byczynski, W.

AU - Cadeddu, S.

AU - Cai, H.

AU - Calabrese, R.

AU - Cali, S.

AU - Calladine, R.

AU - Calvi, M.

AU - Calvo Gomez, M.

AU - Camboni, A.

AU - Campana, P.

AU - Campora Perez, D. H.

AU - Capriotti, L.

AU - Carbone, A.

AU - Carboni, G.

AU - Cardinale, R.

AU - Cardini, A.

AU - Carniti, P.

AU - Carvalho Akiba, K.

AU - Casse, G.

AU - Cattaneo, M.

AU - Cavallero, G.

AU - Cenci, R.

AU - Chapman, M. G.

AU - Charles, M.

AU - Charpentier, Ph

AU - Chatzikonstantinidis, G.

AU - Chefdeville, M.

AU - Chekalina, V.

AU - Chen, C.

AU - Chen, S.

AU - Chitic, S. G.

AU - Chobanova, V.

AU - Chrzaszcz, M.

AU - Chubykin, A.

AU - Ciambrone, P.

AU - Cid Vidal, X.

AU - Ciezarek, G.

AU - Cindolo, F.

AU - Clarke, P. E.L.

AU - Clemencic, M.

AU - Cliff, H. V.

AU - Closier, J.

AU - Coco, V.

AU - Coelho, J. A.B.

AU - Cogan, J.

AU - Cogneras, E.

AU - Cojocariu, L.

AU - Collins, P.

AU - Colombo, T.

AU - Comerma-Montells, A.

AU - Contu, A.

AU - Coombs, G.

AU - Coquereau, S.

AU - Corti, G.

AU - Costa Sobral, C. M.

AU - Couturier, B.

AU - Cowan, G. A.

AU - Craik, D. C.

AU - Crocombe, A.

AU - Cruz Torres, M.

AU - Currie, R.

AU - Da Silva, C. L.

AU - Dall'Occo, E.

AU - Dalseno, J.

AU - D'Ambrosio, C.

AU - Danilina, A.

AU - D'Argent, P.

AU - Davis, A.

AU - De Aguiar Francisco, O.

AU - De Bruyn, K.

AU - De Capua, S.

AU - De Cian, M.

AU - De Miranda, J. M.

AU - De Paula, L.

AU - De Serio, M.

AU - De Simone, P.

AU - De Vries, J. A.

AU - Dean, C. T.

AU - Dean, W.

AU - Decamp, D.

AU - Del Buono, L.

AU - Delaney, B.

AU - Dembinski, H. P.

AU - Demmer, M.

AU - Dendek, A.

AU - Derkach, D.

AU - Deschamps, O.

AU - Desse, F.

AU - Dettori, F.

AU - Dey, B.

AU - Di Canto, A.

AU - Di Nezza, P.

AU - Didenko, S.

AU - Dijkstra, H.

AU - Dordei, F.

AU - Dorigo, M.

AU - Dos Reis, A. C.

AU - Dosil Suárez, A.

AU - Douglas, L.

AU - Dovbnya, A.

AU - Dreimanis, K.

AU - Dufour, L.

AU - Dujany, G.

AU - Durante, P.

AU - Durham, J. M.

AU - Dutta, D.

AU - Dzhelyadin, R.

AU - Dziewiecki, M.

AU - Dziurda, A.

AU - Dzyuba, A.

AU - Easo, S.

AU - Egede, U.

AU - Egorychev, V.

AU - Eidelman, S.

AU - Eisenhardt, S.

AU - Eitschberger, U.

AU - Ekelhof, R.

AU - Eklund, L.

AU - Ely, S.

AU - Ene, A.

AU - Escher, S.

AU - Esen, S.

AU - Evans, T.

AU - Falabella, A.

AU - Färber, C.

AU - Farley, N.

AU - Farry, S.

AU - Fazzini, D.

AU - Féo, M.

AU - Fernandez Declara, P.

AU - Fernandez Prieto, A.

AU - Ferrari, F.

AU - Ferreira Lopes, L.

AU - Ferreira Rodrigues, F.

AU - Ferreres Sole, S.

AU - Ferro-Luzzi, M.

AU - Filippov, S.

AU - Fini, R. A.

AU - Fiorini, M.

AU - Firlej, M.

AU - Fitzpatrick, C.

AU - Fiutowski, T.

AU - Fleuret, F.

AU - Fontana, M.

AU - Fontanelli, F.

AU - Forty, R.

AU - Franco Lima, V.

AU - Frank, M.

AU - Frei, C.

AU - Fu, J.

AU - Funk, W.

AU - Gabriel, E.

AU - Gallas Torreira, A.

AU - Galli, D.

AU - Gallorini, S.

AU - Gambetta, S.

AU - Gan, Y.

AU - Gandelman, M.

AU - Gandini, P.

AU - Gao, Y.

AU - Garcia Martin, L. M.

AU - García Pardiñas, J.

AU - Garcia Plana, B.

AU - Garra Tico, J.

AU - Garrido, L.

AU - Gascon, D.

AU - Gaspar, C.

AU - Gazzoni, G.

AU - Gerick, D.

AU - Gersabeck, E.

AU - Gersabeck, M.

AU - Gershon, T.

AU - Gerstel, D.

AU - Ghez, Ph

AU - Gibson, V.

AU - Girard, O. G.

AU - Gironella Gironell, P.

AU - Giubega, L.

AU - Gizdov, K.

AU - Gligorov, V. V.

AU - Göbel, C.

AU - Golubkov, D.

AU - Golutvin, A.

AU - Gomes, A.

AU - Gorelov, I. V.

AU - Gotti, C.

AU - Govorkova, E.

AU - Grabowski, J. P.

AU - Graciani Diaz, R.

AU - Granado Cardoso, L. A.

AU - Graugés, E.

AU - Graverini, E.

AU - Graziani, G.

AU - Grecu, A.

AU - Greim, R.

AU - Griffith, P.

AU - Grillo, L.

AU - Gruber, L.

AU - Gruberg Cazon, B. R.

AU - Gu, C.

AU - Gushchin, E.

AU - Guth, A.

AU - Guz, Yu

AU - Gys, T.

AU - Hadavizadeh, T.

AU - Hadjivasiliou, C.

AU - Haefeli, G.

AU - Haen, C.

AU - Haines, S. C.

AU - Hamilton, B.

AU - Han, Q.

AU - Han, X.

AU - Hancock, T. H.

AU - Hansmann-Menzemer, S.

AU - Harnew, N.

AU - Harrison, T.

AU - Hasse, C.

AU - Hatch, M.

AU - He, J.

AU - Hecker, M.

AU - Heinicke, K.

AU - Heister, A.

AU - Hennessy, K.

AU - Henry, L.

AU - Heß, M.

AU - Heuel, J.

AU - Hicheur, A.

AU - Hidalgo Charman, R.

AU - Hill, D.

AU - Hilton, M.

AU - Hopchev, P. H.

AU - Hu, J.

AU - Hu, W.

AU - Huang, W.

AU - Huard, Z. C.

AU - Hulsbergen, W.

AU - Humair, T.

AU - Hushchyn, M.

AU - Hutchcroft, D.

AU - Hynds, D.

AU - Ibis, P.

AU - Idzik, M.

AU - Ilten, P.

AU - Inglessi, A.

AU - Inyakin, A.

AU - Ivshin, K.

AU - Jacobsson, R.

AU - Jakobsen, S.

AU - Jalocha, J.

AU - Jans, E.

AU - Jashal, B. K.

AU - Jawahery, A.

AU - Jiang, F.

AU - John, M.

AU - Johnson, D.

AU - Jones, C. R.

AU - Joram, C.

AU - Jost, B.

AU - Jurik, N.

AU - Kandybei, S.

AU - Karacson, M.

AU - Kariuki, J. M.

AU - Karodia, S.

AU - Kazeev, N.

AU - Kecke, M.

AU - Keizer, F.

AU - Kelsey, M.

AU - Kenzie, M.

AU - Ketel, T.

AU - Khanji, B.

AU - Kharisova, A.

AU - Khurewathanakul, C.

AU - Kim, K. E.

AU - Kirn, T.

AU - Kirsebom, V. S.

AU - Klaver, S.

AU - Klimaszewski, K.

AU - Koliiev, S.

AU - Kolpin, M.

AU - Kopecna, R.

AU - Koppenburg, P.

AU - Kostiuk, I.

AU - Kot, O.

AU - Kotriakhova, S.

AU - Kozeiha, M.

AU - Kravchuk, L.

AU - Kreps, M.

AU - Kress, F.

AU - Kretzschmar, S.

AU - Krokovny, P.

AU - Krupa, W.

AU - Krzemien, W.

AU - Kucewicz, W.

AU - Kucharczyk, M.

AU - Kudryavtsev, V.

AU - Kunde, G. J.

AU - Kuonen, A. K.

AU - Kvaratskheliya, T.

AU - Lacarrere, D.

AU - Lafferty, G.

AU - Lai, A.

AU - Lancierini, D.

AU - Lanfranchi, G.

AU - Langenbruch, C.

AU - Latham, T.

AU - Lazzeroni, C.

AU - Le Gac, R.

AU - Lefèvre, R.

AU - Leflat, A.

AU - Lemaitre, F.

AU - Leroy, O.

AU - Lesiak, T.

AU - Leverington, B.

AU - Li, H.

AU - Li, P. R.

AU - Li, X.

AU - Li, Y.

AU - Li, Z.

AU - Liang, X.

AU - Likhomanenko, T.

AU - Lindner, R.

AU - Lionetto, F.

AU - Lisovskyi, V.

AU - Liu, G.

AU - Liu, X.

AU - Loh, D.

AU - Loi, A.

AU - Longstaff, I.

AU - Lopes, J. H.

AU - Loustau, G.

AU - Lovell, G. H.

AU - Lucchesi, D.

AU - Lucio Martinez, M.

AU - Luo, Y.

AU - Lupato, A.

AU - Luppi, E.

AU - Lupton, O.

AU - Lusiani, A.

AU - Lyu, X.

AU - Machefert, F.

AU - Maciuc, F.

AU - Macko, V.

AU - Mackowiak, P.

AU - Maddrell-Mander, S.

AU - Maev, O.

AU - Maguire, K.

AU - Maisuzenko, D.

AU - Majewski, M. W.

AU - Malde, S.

AU - Malecki, B.

AU - Malinin, A.

AU - Maltsev, T.

AU - Malygina, H.

AU - Manca, G.

AU - Mancinelli, G.

AU - Marangotto, D.

AU - Maratas, J.

AU - Marchand, J. F.

AU - Marconi, U.

AU - Marin Benito, C.

AU - Marinangeli, M.

AU - Marino, P.

AU - Marks, J.

AU - Marshall, P. J.

AU - Martellotti, G.

AU - Martinelli, M.

AU - Martinez Santos, D.

AU - Martinez Vidal, F.

AU - Massafferri, A.

AU - Materok, M.

AU - Matev, R.

AU - Mathad, A.

AU - Mathe, Z.

AU - Matiunin, V.

AU - Matteuzzi, C.

AU - Mattioli, K. R.

AU - Mauri, A.

AU - Maurice, E.

AU - Maurin, B.

AU - McCann, M.

AU - McNab, A.

AU - McNulty, R.

AU - Mead, J. V.

AU - Meadows, B.

AU - Meaux, C.

AU - Meinert, N.

AU - Melnychuk, D.

AU - Merk, M.

AU - Merli, A.

AU - Michielin, E.

AU - Milanes, D. A.

AU - Millard, E.

AU - Minard, M. N.

AU - Minzoni, L.

AU - Mitzel, D. S.

AU - Mödden, A.

AU - Mogini, A.

AU - Moise, R. D.

AU - Mombächer, T.

AU - Monroy, I. A.

AU - Monteil, S.

AU - Morandin, M.

AU - Morello, G.

AU - Morello, M. J.

AU - Moron, J.

AU - Morris, A. B.

AU - Mountain, R.

AU - Muheim, F.

AU - Mukherjee, M.

AU - Mulder, M.

AU - Müller, D.

AU - Müller, J.

AU - Müller, K.

AU - Müller, V.

AU - Murphy, C. H.

AU - Murray, D.

AU - Naik, P.

AU - Nakada, T.

AU - Nandakumar, R.

AU - Nandi, A.

AU - Nanut, T.

AU - Nasteva, I.

AU - Needham, M.

AU - Neri, N.

AU - Neubert, S.

AU - Neufeld, N.

AU - Newcombe, R.

AU - Nguyen, T. D.

AU - Nguyen-Mau, C.

AU - Nieswand, S.

AU - Niet, R.

AU - Nikitin, N.

AU - Nolte, N. S.

AU - Oblakowska-Mucha, A.

AU - Obraztsov, V.

AU - Ogilvy, S.

AU - O'Hanlon, D. P.

AU - Oldeman, R.

AU - Onderwater, C. J.G.

AU - Osborn, J. D.

AU - Ossowska, A.

AU - Otalora Goicochea, J. M.

AU - Ovsiannikova, T.

AU - Owen, P.

AU - Oyanguren, A.

AU - Pais, P. R.

AU - Pajero, T.

AU - Palano, A.

AU - Palutan, M.

AU - Panshin, G.

AU - Papanestis, A.

AU - Pappagallo, M.

AU - Pappalardo, L. L.

AU - Parker, W.

AU - Parkes, C.

AU - Passaleva, G.

AU - Pastore, A.

AU - Patel, M.

AU - Patrignani, C.

AU - Pearce, A.

AU - Pellegrino, A.

AU - Penso, G.

AU - Pepe Altarelli, M.

AU - Perazzini, S.

AU - Pereima, D.

AU - Perret, P.

AU - Pescatore, L.

AU - Petridis, K.

AU - Petrolini, A.

AU - Petrov, A.

AU - Petrucci, S.

AU - Petruzzo, M.

AU - Pietrzyk, B.

AU - Pietrzyk, G.

AU - Pikies, M.

AU - Pili, M.

AU - Pinci, D.

AU - Pinzino, J.

AU - Pisani, F.

AU - Piucci, A.

AU - Placinta, V.

AU - Playfer, S.

AU - Plews, J.

AU - Plo Casasus, M.

AU - Polci, F.

AU - Poli Lener, M.

AU - Poliakova, M.

AU - Poluektov, A.

AU - Polukhina, N.

AU - Polyakov, I.

AU - Polycarpo, E.

AU - Pomery, G. J.

AU - Ponce, S.

AU - Popov, A.

AU - Popov, D.

AU - Poslavskii, S.

AU - Price, E.

AU - Prouve, C.

AU - Pugatch, V.

AU - Puig Navarro, A.

AU - Pullen, H.

AU - Punzi, G.

AU - Qian, W.

AU - Qin, J.

AU - Quagliani, R.

AU - Quintana, B.

AU - Raab, N. V.

AU - Rachwal, B.

AU - Rademacker, J. H.

AU - Rama, M.

AU - Ramos Pernas, M.

AU - Rangel, M. S.

AU - Ratnikov, F.

AU - Raven, G.

AU - Ravonel Salzgeber, M.

AU - Reboud, M.

AU - Redi, F.

AU - Reichert, S.

AU - Reiss, F.

AU - Remon Alepuz, C.

AU - Ren, Z.

AU - Renaudin, V.

AU - Ricciardi, S.

AU - Richards, S.

AU - Rinnert, K.

AU - Robbe, P.

AU - Robert, A.

AU - Rodrigues, A. B.

AU - Rodrigues, E.

AU - Rodriguez Lopez, J. A.

AU - Roehrken, M.

AU - Roiser, S.

AU - Rollings, A.

AU - Romanovskiy, V.

AU - Romero Vidal, A.

AU - Roth, J. D.

AU - Rotondo, M.

AU - Rudolph, M. S.

AU - Ruf, T.

AU - Ruiz Vidal, J.

AU - Saborido Silva, J. J.

AU - Sagidova, N.

AU - Saitta, B.

AU - Salustino Guimaraes, V.

AU - Sanchez Gras, C.

AU - Sanchez Mayordomo, C.

AU - Sanmartin Sedes, B.

AU - Santacesaria, R.

AU - Santamarina Rios, C.

AU - Santimaria, M.

AU - Santovetti, E.

AU - Sarpis, G.

AU - Sarti, A.

AU - Satriano, C.

AU - Satta, A.

AU - Saur, M.

AU - Savrina, D.

AU - Schael, S.

AU - Schellenberg, M.

AU - Schiller, M.

AU - Schindler, H.

AU - Schmelling, M.

AU - Schmelzer, T.

AU - Schmidt, B.

AU - Schneider, O.

AU - Schopper, A.

AU - Schreiner, H. F.

AU - Schubiger, M.

AU - Schulte, S.

AU - Schune, M. H.

AU - Schwemmer, R.

AU - Sciascia, B.

AU - Sciubba, A.

AU - Semennikov, A.

AU - Sepulveda, E. S.

AU - Sergi, A.

AU - Serra, N.

AU - Serrano, J.

AU - Sestini, L.

AU - Seuthe, A.

AU - Seyfert, P.

AU - Shapkin, M.

AU - Shears, T.

AU - Shekhtman, L.

AU - Shevchenko, V.

AU - Shmanin, E.

AU - Siddi, B. G.

AU - Silva Coutinho, R.

AU - Silva De Oliveira, L.

AU - Simi, G.

AU - Simone, S.

AU - Skiba, I.

AU - Skidmore, N.

AU - Skwarnicki, T.

AU - Slater, M. W.

AU - Smeaton, J. G.

AU - Smith, E.

AU - Smith, I. T.

AU - Smith, M.

AU - Soares, M.

AU - Soares, Lavra

AU - Sokoloff, M. D.

AU - Soler, F. J.P.

AU - Souza De Paula, B.

AU - Spaan, B.

AU - Spadaro Norella, E.

AU - Spradlin, P.

AU - Stagni, F.

AU - Stahl, M.

AU - Stahl, S.

AU - Stefko, P.

AU - Stefkova, S.

AU - Steinkamp, O.

AU - Stemmle, S.

AU - Stenyakin, O.

AU - Stepanova, M.

AU - Stevens, H.

AU - Stocchi, A.

AU - Stone, S.

AU - Stracka, S.

AU - Stramaglia, M. E.

AU - Straticiuc, M.

AU - Straumann, U.

AU - Strokov, S.

AU - Sun, J.

AU - Sun, L.

AU - Sun, Y.

AU - Swientek, K.

AU - Szabelski, A.

AU - Szumlak, T.

AU - Szymanski, M.

AU - Tang, Z.

AU - Tekampe, T.

AU - Tellarini, G.

AU - Teubert, F.

AU - Thomas, E.

AU - Tilley, M. J.

AU - Tisserand, V.

AU - T'Jampens, S.

AU - Tobin, M.

AU - Tolk, S.

AU - Tomassetti, L.

AU - Tonelli, D.

AU - Tou, D. Y.

AU - Tourinho Jadallah Aoude, R.

AU - Tournefier, E.

AU - Traill, M.

AU - Tran, M. T.

AU - Trisovic, A.

AU - Tsaregorodtsev, A.

AU - Tuci, G.

AU - Tully, A.

AU - Tuning, N.

AU - Ukleja, A.

AU - Usachov, A.

AU - Ustyuzhanin, A.

AU - Uwer, U.

AU - Vagner, A.

AU - Vagnoni, V.

AU - Valassi, A.

AU - Valat, S.

AU - Valenti, G.

AU - Van Beuzekom, M.

AU - Van Hecke, H.

AU - Van Herwijnen, E.

AU - Van Hulse, C. B.

AU - Van Tilburg, J.

AU - Van Veghel, M.

AU - Vasiliev, A.

AU - Vazquez Gomez, R.

AU - Vazquez Regueiro, P.

AU - Vázquez Sierra, C.

AU - Vecchi, S.

AU - Velthuis, J. J.

AU - Veltri, M.

AU - Venkateswaran, A.

AU - Vernet, M.

AU - Veronesi, M.

AU - Vesterinen, M.

AU - Viana Barbosa, J. V.

AU - Vieira, D.

AU - Vieites Diaz, M.

AU - Viemann, H.

AU - Vilasis-Cardona, X.

AU - Vitkovskiy, A.

AU - Vitti, M.

AU - Volkov, V.

AU - Vollhardt, A.

AU - Vom Bruch, D.

AU - Voneki, B.

AU - Vorobyev, A.

AU - Vorobyev, V.

AU - Voropaev, N.

AU - Waldi, R.

AU - Walsh, J.

AU - Wang, J.

AU - Wang, M.

AU - Wang, Y.

AU - Wang, Z.

AU - Ward, D. R.

AU - Wark, H. M.

AU - Watson, N. K.

AU - Websdale, D.

AU - Weiden, A.

AU - Weisser, C.

AU - Whitehead, M.

AU - Wilkinson, G.

AU - Wilkinson, M.

AU - Williams, I.

AU - Williams, M.

AU - Williams, M. R.J.

AU - Williams, T.

AU - Wilson, F. F.

AU - Winn, M.

AU - Wislicki, W.

AU - Witek, M.

AU - Wormser, G.

AU - Wotton, S. A.

AU - Wyllie, K.

AU - Xiao, D.

AU - Xie, Y.

AU - Xing, H.

AU - Xu, A.

AU - Xu, M.

AU - Xu, Q.

AU - Xu, Z.

AU - Yang, Z.

AU - Yao, Y.

AU - Yeomans, L. E.

AU - Yin, H.

AU - Yu, J.

AU - Yuan, X.

AU - Yushchenko, O.

AU - Zarebski, K. A.

AU - Zavertyaev, M.

AU - Zeng, M.

AU - Zhang, D.

AU - Zhang, L.

AU - Zhang, W. C.

AU - Zhang, Y.

AU - Zhelezov, A.

AU - Zheng, Y.

AU - Zhu, X.

AU - Zhukov, V.

AU - Zonneveld, J. B.

AU - Zucchelli, S.

AU - (LHCb Collaboration)

PY - 2019/7/15

Y1 - 2019/7/15

N2 - The radiative decay Λb0→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7 fb-1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K∗0γ decay as a normalization mode and is found to be B(Λb0→Λγ)=(7.1±1.5±0.6±0.7)×10-6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon.

AB - The radiative decay Λb0→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7 fb-1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K∗0γ decay as a normalization mode and is found to be B(Λb0→Λγ)=(7.1±1.5±0.6±0.7)×10-6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon.

UR - http://www.scopus.com/inward/record.url?scp=85069880860&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85069880860&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.123.031801

DO - 10.1103/PhysRevLett.123.031801

M3 - Article

C2 - 31386473

AN - SCOPUS:85069880860

SN - 0031-9007

VL - 123

SP - 1

EP - 11

JO - Physical Review Letters

JF - Physical Review Letters

IS - 3

M1 - 031801

ER -

First Observation of the Radiative Decay Λb0 → Λγ

Abstract

Funding

UN SDGs

Access to Document

Persistent URL (handle)

Other files and links

Fingerprint

Cite this