Production of Λc                      + baryons in proton-proton and lead-lead collisions at s                         NN                      =5.02TeV

The CMS collaboration

doi:10.1016/j.physletb.2020.135328

Production of Λ_c ⁺ baryons in proton-proton and lead-lead collisions at s_{_NN}=5.02TeV

The CMS collaboration

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

Abstract

The transverse momentum (p_T) spectra of inclusively produced Λ_c ⁺ baryons are measured via the exclusive decay channel Λ_c ⁺→pK⁻π⁺ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λ_c ⁺ rapidity interval |y|<1 in the p_T range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λ_c ⁺ for p_T of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λ_c ⁺/D⁰ production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common p_T range.

Original language	English (US)
Article number	135328
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	803
DOIs	https://doi.org/10.1016/j.physletb.2020.135328
State	Published - Apr 10 2020

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Keywords

CMS
Heavy flavor
Lambda(c) baryons
Nuclear modification factor
Physics

Access to Document

10.1016/j.physletb.2020.135328

Cite this

@article{50b4f2465610408bbc44b8e96bd1a5b3,

title = "Production of Λc + baryons in proton-proton and lead-lead collisions at s NN =5.02TeV",

abstract = "The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.",

keywords = "CMS, Heavy flavor, Lambda(c) baryons, Nuclear modification factor, Physics",

author = "{The CMS collaboration} and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and J. Brandstetter 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 D. Spitzbart and W. Waltenberger and J. Wittmann 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 J. Lauwers 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 P. Elmer and D. Lange and D. Marlow and I. Ojalvo and J. Olsen and C. Tully",

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

year = "2020",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2020.135328",

language = "English (US)",

volume = "803",

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

issn = "0370-2693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Production of Λc + baryons in proton-proton and lead-lead collisions at s NN =5.02TeV

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Bergauer, T.

AU - Brandstetter, J.

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 - Spitzbart, D.

AU - Waltenberger, W.

AU - Wittmann, J.

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 - Lauwers, J.

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 - Elmer, P.

AU - Lange, D.

AU - Marlow, D.

AU - Ojalvo, I.

AU - Olsen, J.

AU - Tully, C.

PY - 2020/4/10

Y1 - 2020/4/10

N2 - The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.

AB - The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.

KW - CMS

KW - Heavy flavor

KW - Lambda(c) baryons

KW - Nuclear modification factor

KW - Physics

UR - http://www.scopus.com/inward/record.url?scp=85080054268&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85080054268&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2020.135328

DO - 10.1016/j.physletb.2020.135328

M3 - Article

AN - SCOPUS:85080054268

SN - 0370-2693

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

M1 - 135328

ER -