Observation of the Λb                      0→J/ψΛϕ decay in proton-proton collisions at s=13TeV

The CMS collaboration

doi:10.1016/j.physletb.2020.135203

Observation of the Λ_b ⁰→J/ψΛϕ decay in proton-proton collisions at s=13TeV

The CMS collaboration

A. Alikhanian Yerevan Institute of Physics
Austrian Academy of Sciences
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11 Citas (Scopus)

Resumen

The observation of the Λ_b ⁰→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb⁻¹. The ratio of the branching fractions B(Λ_b ⁰→J/ψΛϕ)/B(Λ_b ⁰→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10⁻², where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.

Idioma original	Inglés
Número de artículo	135203
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	802
DOI	https://doi.org/10.1016/j.physletb.2020.135203
Estado	Publicada - 10 mar. 2020
Publicado de forma externa	Sí

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@article{91b29fc7f8f2421d8169e8100a02b82b,

title = "Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at s=13TeV",

abstract = "The observation of the Λb 0→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb−1. The ratio of the branching fractions B(Λb 0→J/ψΛϕ)/B(Λb 0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10−2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.",

keywords = "CMS, Computing, Heavy-flavor spectroscopy, b physics",

author = "\{The CMS collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and M. Dragicevic and J. Er{\"o} and A. Escalantedelvalle and M. Flechl and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and W. Waltenberger and Wulz, \{C. E.\} and M. Zarucki and V. Drugakov and V. Mossolov and J. Suarezgonzalez and Darwish, \{M. R.\} and Dewolf, \{E. A.\} and D. Dicroce and X. Janssen and A. Lelek and M. Pieters and H. Rejebsfar and \{Van haevermaet\}, H. and \{Van mechelen\}, P. and \{Van putte\}, S. and \{Van remortel\}, N. and F. Blekman and Bols, \{E. S.\} and Chhibra, \{S. S.\} and J. D'hondt and J. Declercq and D. Lontkovskyi and S. Lowette and I. Marchesini and S. Moortgat and Q. Python and K. Skovpen and S. Tavernier and Sanchezrosas, \{L. J.\}",

note = "Publisher Copyright: {\textcopyright} 2020 The Author",

year = "2020",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2020.135203",

language = "English",

volume = "802",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

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TY - JOUR

T1 - Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at s=13TeV

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalantedelvalle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Drugakov, V.

AU - Mossolov, V.

AU - Suarezgonzalez, J.

AU - Darwish, M. R.

AU - Dewolf, E. A.

AU - Dicroce, D.

AU - Janssen, X.

AU - Lelek, A.

AU - Pieters, M.

AU - Rejebsfar, H.

AU - Van haevermaet, H.

AU - Van mechelen, P.

AU - Van putte, S.

AU - Van remortel, N.

AU - Blekman, F.

AU - Bols, E. S.

AU - Chhibra, S. S.

AU - D'hondt, J.

AU - Declercq, J.

AU - Lontkovskyi, D.

AU - Lowette, S.

AU - Marchesini, I.

AU - Moortgat, S.

AU - Python, Q.

AU - Skovpen, K.

AU - Tavernier, S.

AU - Sanchezrosas, L. J.

PY - 2020/3/10

Y1 - 2020/3/10

N2 - The observation of the Λb 0→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb−1. The ratio of the branching fractions B(Λb 0→J/ψΛϕ)/B(Λb 0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10−2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.

AB - The observation of the Λb 0→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb−1. The ratio of the branching fractions B(Λb 0→J/ψΛϕ)/B(Λb 0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10−2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.

KW - CMS

KW - Computing

KW - Heavy-flavor spectroscopy

KW - b physics

UR - https://www.scopus.com/pages/publications/85078529004

U2 - 10.1016/j.physletb.2020.135203

DO - 10.1016/j.physletb.2020.135203

M3 - Article

AN - SCOPUS:85078529004

SN - 0370-2693

VL - 802

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135203

ER -

Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at s=13TeV

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Observation of the Λ_b ⁰→J/ψΛϕ decay in proton-proton collisions at s=13TeV