Observation of the Λb 0→Λφ decay

R. Aaij; C. Abellán Beteta; B. Adeva; M. Adinolfi; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; LA Everse; L. Anderlini; G. Andreassi; M. Andreotti; J.E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; P. d'Argent; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; K. Carvalho Akiba; V. Coco; P. N.Y. David; K. De Bruyn; M. Ferro-Luzzi; T. Ketel; R. F. Koopman; J. van Leerdam; M. Merk; C. J.G. Onderwater; G. Raven; M. Schiller; N. Serra; H. Snoek; B. Storaci; V. Syropoulos; J. van Tilburg; S. Tolk; P. Tsopelas; N. Tuning; The LHCb Collaboration

doi:10.1016/j.physletb.2016.05.077

Observation of the Λ_b ⁰→Λφ decay

R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, LA Everse, L. Anderlini, G. Andreassi, M. AndreottiJ.E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, P. d'Argent, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, K. Carvalho Akiba, V. Coco, P. N.Y. David, K. De Bruyn, M. Ferro-Luzzi, T. Ketel, R. F. Koopman, J. van Leerdam, M. Merk, C. J.G. Onderwater, G. Raven, M. Schiller, N. Serra, H. Snoek, B. Storaci, V. Syropoulos, J. van Tilburg, S. Tolk, P. Tsopelas, N. Tuning, The LHCb Collaboration

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

Abstract

The Λ_b ⁰→Λφ decay is observed using data corresponding to an integrated luminosity of 3.0 fb^-1 recorded by the LHCb experiment. The decay proceeds at leading order via a b→sss loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9 standard deviations. The value of the branching fraction is measured to be (5.18±1.04±0.35_-0.62 ^+0.67)×10^-6, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero.

Original language	English
Pages (from-to)	282-292
Number of pages	11
Journal	Physics Letters B
Volume	759
DOIs	https://doi.org/10.1016/j.physletb.2016.05.077
Publication status	Published - 10 Aug 2016

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10.1016/j.physletb.2016.05.077

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Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., Everse, LA., Anderlini, L., Andreassi, G., ... The LHCb Collaboration (2016). Observation of the Λ_b ⁰→Λφ decay. Physics Letters B, 759, 282-292. https://doi.org/10.1016/j.physletb.2016.05.077

Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; Ajaltouni, Z. ; Akar, S. ; Albrecht, J. ; Alessio, F. ; Alexander, M. ; Ali, S. ; Alkhazov, G. ; Alvarez Cartelle, P. ; Alves, A. A. ; Amato, S. ; Amerio, S. ; Amhis, Y. ; Everse, LA ; Anderlini, L. ; Andreassi, G. ; Andreotti, M. ; Andrews, J.E. ; Appleby, R. B. ; Aquines Gutierrez, O. ; Archilli, F. ; d'Argent, P. ; Artamonov, A. ; Artuso, M. ; Aslanides, E. ; Auriemma, G. ; Baalouch, M. ; Carvalho Akiba, K. ; Coco, V. ; David, P. N.Y. ; De Bruyn, K. ; Ferro-Luzzi, M. ; Ketel, T. ; Koopman, R. F. ; van Leerdam, J. ; Merk, M. ; Onderwater, C. J.G. ; Raven, G. ; Schiller, M. ; Serra, N. ; Snoek, H. ; Storaci, B. ; Syropoulos, V. ; van Tilburg, J. ; Tolk, S. ; Tsopelas, P. ; Tuning, N. ; The LHCb Collaboration. / Observation of the Λ_b ⁰→Λφ decay. In: Physics Letters B. 2016 ; Vol. 759. pp. 282-292.

@article{468280b776ac40448176cb8183a332ea,

title = "Observation of the Λb 0→Λφ decay",

abstract = "The Λb 0→Λφ decay is observed using data corresponding to an integrated luminosity of 3.0 fb-1 recorded by the LHCb experiment. The decay proceeds at leading order via a b→sss loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9 standard deviations. The value of the branching fraction is measured to be (5.18±1.04±0.35-0.62 +0.67)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero.",

author = "R. Aaij and {Abell{\'a}n Beteta}, C. and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and LA Everse and L. Anderlini and G. Andreassi and M. Andreotti and J.E. Andrews and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and P. d'Argent and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and {Carvalho Akiba}, K. and V. Coco and David, {P. N.Y.} and {De Bruyn}, K. and M. Ferro-Luzzi and T. Ketel and Koopman, {R. F.} and {van Leerdam}, J. and M. Merk and Onderwater, {C. J.G.} and G. Raven and M. Schiller and N. Serra and H. Snoek and B. Storaci and V. Syropoulos and {van Tilburg}, J. and S. Tolk and P. Tsopelas and N. Tuning and {The LHCb Collaboration}",

year = "2016",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2016.05.077",

language = "English",

volume = "759",

pages = "282--292",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

}

Aaij, R, Abellán Beteta, C, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, Everse, LA, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Aquines Gutierrez, O, Archilli, F, d'Argent, P, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Carvalho Akiba, K, Coco, V, David, PNY, De Bruyn, K, Ferro-Luzzi, M, Ketel, T, Koopman, RF, van Leerdam, J, Merk, M, Onderwater, CJG, Raven, G, Schiller, M, Serra, N, Snoek, H, Storaci, B, Syropoulos, V, van Tilburg, J, Tolk, S, Tsopelas, P, Tuning, N & The LHCb Collaboration 2016, 'Observation of the Λ_b ⁰→Λφ decay', Physics Letters B, vol. 759, pp. 282-292. https://doi.org/10.1016/j.physletb.2016.05.077

Observation of the Λ_b ⁰→Λφ decay. / Aaij, R.; Abellán Beteta, C.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A.; Amato, S.; Amerio, S.; Amhis, Y.; Everse, LA; Anderlini, L.; Andreassi, G.; Andreotti, M.; Andrews, J.E.; Appleby, R. B.; Aquines Gutierrez, O.; Archilli, F.; d'Argent, P.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G.; Baalouch, M.; Carvalho Akiba, K.; Coco, V.; David, P. N.Y.; De Bruyn, K.; Ferro-Luzzi, M.; Ketel, T.; Koopman, R. F.; van Leerdam, J.; Merk, M.; Onderwater, C. J.G.; Raven, G.; Schiller, M.; Serra, N.; Snoek, H.; Storaci, B.; Syropoulos, V.; van Tilburg, J.; Tolk, S.; Tsopelas, P.; Tuning, N.; The LHCb Collaboration.

In: Physics Letters B, Vol. 759, 10.08.2016, p. 282-292.

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

TY - JOUR

T1 - Observation of the Λb 0→Λφ decay

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - Everse, LA

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J.E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - d'Argent, P.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Carvalho Akiba, K.

AU - Coco, V.

AU - David, P. N.Y.

AU - De Bruyn, K.

AU - Ferro-Luzzi, M.

AU - Ketel, T.

AU - Koopman, R. F.

AU - van Leerdam, J.

AU - Merk, M.

AU - Onderwater, C. J.G.

AU - Raven, G.

AU - Schiller, M.

AU - Serra, N.

AU - Snoek, H.

AU - Storaci, B.

AU - Syropoulos, V.

AU - van Tilburg, J.

AU - Tolk, S.

AU - Tsopelas, P.

AU - Tuning, N.

AU - The LHCb Collaboration

PY - 2016/8/10

Y1 - 2016/8/10

N2 - The Λb 0→Λφ decay is observed using data corresponding to an integrated luminosity of 3.0 fb-1 recorded by the LHCb experiment. The decay proceeds at leading order via a b→sss loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9 standard deviations. The value of the branching fraction is measured to be (5.18±1.04±0.35-0.62 +0.67)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero.

AB - The Λb 0→Λφ decay is observed using data corresponding to an integrated luminosity of 3.0 fb-1 recorded by the LHCb experiment. The decay proceeds at leading order via a b→sss loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9 standard deviations. The value of the branching fraction is measured to be (5.18±1.04±0.35-0.62 +0.67)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero.

UR - http://www.scopus.com/inward/record.url?scp=84973304971&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84973304971&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2016.05.077

DO - 10.1016/j.physletb.2016.05.077

M3 - Article

VL - 759

SP - 282

EP - 292

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

ER -

Observation of the Λb 0→Λφ decay

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Observation of the Λ_b ⁰→Λφ decay