Study of excited Λb                             0 states decaying to Λb                             0π+π− in proton-proton collisions at s=13TeV

The CMS collaboration

doi:10.1016/j.physletb.2020.135345

Study of excited Λ_b ⁰ states decaying to Λ_b ⁰π⁺π⁻ in proton-proton collisions at s=13TeV

The CMS collaboration

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

21 Цитирования (Scopus)

Аннотация

A study of excited Λ_b ⁰ baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb⁻¹. The existence of four excited Λ_b ⁰ states: Λ_b ⁰(5912)⁰, Λ_b ⁰(5920)⁰, Λ_b ⁰(6146)⁰, and Λ_b ⁰(6152)⁰ in the Λ_b ⁰π⁺π⁻ mass spectrum is confirmed, and their masses are measured. The Λ_b ⁰π⁺π⁻ mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.

Язык оригинала	английский
Номер статьи	135345
Число страниц	22
Журнал	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Том	803
DOI	https://doi.org/10.1016/j.physletb.2020.135345
Состояние	Опубликовано - 10 апр. 2020

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10.1016/j.physletb.2020.135345

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@article{10c9175f434849ba8189f007f18031df,

title = "Study of excited Λb 0 states decaying to Λb 0π+π− in proton-proton collisions at s=13TeV",

abstract = "A study of excited Λb 0 baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb 0 states: Λb 0(5912)0, Λb 0(5920)0, Λb 0(6146)0, and Λb 0(6152)0 in the Λb 0π+π− mass spectrum is confirmed, and their masses are measured. The Λb 0π+π− mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.",

keywords = "Beauty baryon, CMS, Experimental results, Flavor spectroscopy, Heavy baryon, Heavy flavor, Physics, QED RADIATIVE-CORRECTIONS, HEAVY BARYONS, UNIVERSAL MONTE-CARLO, QUARK-MODEL, PHOTOS",

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 {Escalante Del Valle}, A. 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 {Suarez Gonzalez}, J. and Darwish, {M. R.} and {De Wolf}, {E. A.} and {Di Croce}, D. and X. Janssen and T. Kello and A. Lelek and M. Pieters and {Rejeb Sfar}, H. 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 {De Clercq}, J. and D. Lontkovskyi and A. Barnyakov and V. Blinov and T. Dimova and L. Kardapoltsev and I. Ovtin and Y. Skovpen",

year = "2020",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2020.135345",

language = "English",

volume = "803",

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

issn = "0370-2693",

publisher = "Elsevier",

}

Study of excited Λ_b ⁰ states decaying to Λ_b ⁰π⁺π⁻ in proton-proton collisions at s=13TeV. / The CMS collaboration.

В: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Том 803, 135345, 10.04.2020.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - Study of excited Λb 0 states decaying to Λb 0π+π− 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 - Escalante Del Valle, 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 - Suarez Gonzalez, J.

AU - Darwish, M. R.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Kello, T.

AU - Lelek, A.

AU - Pieters, M.

AU - Rejeb Sfar, 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 - De Clercq, J.

AU - Lontkovskyi, D.

AU - Barnyakov, A.

AU - Blinov, V.

AU - Dimova, T.

AU - Kardapoltsev, L.

AU - Ovtin, I.

AU - Skovpen, Y.

PY - 2020/4/10

Y1 - 2020/4/10

N2 - A study of excited Λb 0 baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb 0 states: Λb 0(5912)0, Λb 0(5920)0, Λb 0(6146)0, and Λb 0(6152)0 in the Λb 0π+π− mass spectrum is confirmed, and their masses are measured. The Λb 0π+π− mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.

AB - A study of excited Λb 0 baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb 0 states: Λb 0(5912)0, Λb 0(5920)0, Λb 0(6146)0, and Λb 0(6152)0 in the Λb 0π+π− mass spectrum is confirmed, and their masses are measured. The Λb 0π+π− mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.

KW - Beauty baryon

KW - CMS

KW - Experimental results

KW - Flavor spectroscopy

KW - Heavy baryon

KW - Heavy flavor

KW - Physics

KW - QED RADIATIVE-CORRECTIONS

KW - HEAVY BARYONS

KW - UNIVERSAL MONTE-CARLO

KW - QUARK-MODEL

KW - PHOTOS

UR - http://www.scopus.com/inward/record.url?scp=85081618676&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2020.135345

DO - 10.1016/j.physletb.2020.135345

M3 - Article

AN - SCOPUS:85081618676

VL - 803

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

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

SN - 0370-2693

M1 - 135345

ER -