@article{a16ea081670448f5b3265a941d8f2850,
title = "Measurement of the mass and production rate of Ξb- baryons",
abstract = "The first measurement of the production rate of Ξb- baryons in pp collisions relative to that of Λb0 baryons is reported, using data samples collected by the LHCb experiment, and corresponding to integrated luminosities of 1, 2 and 1.6 fb-1 at s=7, 8 and 13 TeV, respectively. In the kinematic region 2<η<6 and pT<20 GeV/c, we measure fΞb-fΛb0B(Ξb-→J/ψΞ-)B(Λb0→J/ψΛ)=(10.8±0.9±0.8)×10-2 [s=7,8 TeV], fΞb-fΛb0B(Ξb-→J/ψΞ-)B(Λb0→J/ψΛ)=(13.1±1.1±1.0)×10-2 [s=13 TeV], where fΞb- and fΛb0 are the fragmentation fractions of b quarks into Ξb- and Λb0 baryons, respectively; B represents branching fractions; and the uncertainties are due to statistical and experimental systematic sources. The values of fΞb-/fΛb0 are obtained by invoking SU(3) symmetry in the Ξb-→J/ψΞ- and Λb0→J/ψΛ decays. Production asymmetries between Ξb- and Ξb+ baryons are also reported. The mass of the Ξb- baryon is also measured relative to that of the Λb0 baryon, from which it is found that m(Ξb-)=5796.70±0.39±0.15±0.17 MeV/c2, where the last uncertainty is due to the precision on the known Λb0 mass. This result represents the most precise determination of the Ξb- mass.",
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 S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, \{J. E.\} and F. Archilli and P. D'Argent 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 Barrand, \{G. C.\} 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 J. Beddow 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 E. Ben-Haim and G. Bencivenni 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 \{Van Beuzekom\}, M. 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 J. Buytaert and W. Byczynski and S. Cadeddu and H. Cai and R. Calabrese 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 D. Chamont 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 M. Corvo 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 C. D'Ambrosio and \{Da Cunha Marinho\}, F. and \{Da Silva\}, \{C. L.\} and E. Dall'Occo and J. Dalseno and A. Danilina 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 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 \{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 N. Farley and S. Farry and D. Fazzini and \{Fernandez Declara\}, P. and \{Fernandez Prieto\}, A. and F. Ferrari and \{Ferreira Lopes\}, L. and \{Ferreira Rodrigues\}, F. 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 C. F{\"a}rber and M. F{\'e}o 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 \{Garcia Plana\}, B. and \{Garc{\'i}a Pardi{\~n}as\}, J. and \{Garra Tico\}, J. and L. Garrido and D. Gascon and C. Gaspar and L. Gavardi 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 D. Golubkov and A. 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year = "2019",
month = mar,
day = "22",
doi = "10.1103/PhysRevD.99.052006",
language = "English",
volume = "99",
pages = "1--13",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "5",
}