Study of charm hadronization with prompt Λc+ baryons in proton-proton and lead-lead collisions at sNN = 5.02 TeV

The CMS collaboration cms-publication-committee-chair@cern.ch

doi:10.1007/JHEP01(2024)128

Study of charm hadronization with prompt Λc+ baryons in proton-proton and lead-lead collisions at sNN = 5.02 TeV

The CMS collaboration cms-publication-committee-chair@cern.ch

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

2 Citations (Scopus)

Abstract

The production of prompt Λ_c ⁺ baryons is measured via the exclusive decay channel Λ_c ⁺→pK⁻π⁺ at a center-of-mass energy per nucleon pair of 5.02 TeV, using proton-proton (pp) and lead-lead (PbPb) collision data collected by the CMS experiment at the CERN LHC. The pp and PbPb data were obtained in 2017 and 2018 with integrated luminosities of 252 and 0.607 nb⁻¹, respectively. The measurements are performed within the Λ_c ⁺ rapidity interval |y| < 1 with transverse momentum (p_T) ranges of 3–30 and 6–40 GeV/c for pp and PbPb collisions, respectively. Compared to the yields in pp collisions scaled by the expected number of nucleon-nucleon interactions, the observed yields of Λ_c ⁺ with p_T> 10 GeV/c are strongly suppressed in PbPb collisions. The level of suppression depends significantly on the collision centrality. The Λ_c ⁺/D⁰ production ratio is similar in PbPb and pp collisions at p_T> 10 GeV/c, suggesting that the coalescence process does not play a dominant role in prompt Λ_c ⁺ baryon production at higher p_T.

Original language	English
Article number	128
Journal	Journal of High Energy Physics
Volume	2024
Issue number	1
DOIs	https://doi.org/10.1007/JHEP01(2024)128
Publication status	Published - Jan 2024
Externally published	Yes

Keywords

Heavy Ion Experiments
Heavy Quark Production
Relativistic Heavy Ion Physics

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10.1007/JHEP01(2024)128

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@article{f97c21f5b5f547728f876b8539c1c6cd,

title = "Study of charm hadronization with prompt Λc+ baryons in proton-proton and lead-lead collisions at sNN = 5.02 TeV",

abstract = "The production of prompt Λc + baryons is measured via the exclusive decay channel Λc +→pK−π+ at a center-of-mass energy per nucleon pair of 5.02 TeV, using proton-proton (pp) and lead-lead (PbPb) collision data collected by the CMS experiment at the CERN LHC. The pp and PbPb data were obtained in 2017 and 2018 with integrated luminosities of 252 and 0.607 nb−1, respectively. The measurements are performed within the Λc + rapidity interval |y| < 1 with transverse momentum (pT) ranges of 3–30 and 6–40 GeV/c for pp and PbPb collisions, respectively. Compared to the yields in pp collisions scaled by the expected number of nucleon-nucleon interactions, the observed yields of Λc + with pT> 10 GeV/c are strongly suppressed in PbPb collisions. The level of suppression depends significantly on the collision centrality. The Λc +/D0 production ratio is similar in PbPb and pp collisions at pT> 10 GeV/c, suggesting that the coalescence process does not play a dominant role in prompt Λc + baryon production at higher pT.",

keywords = "Heavy Ion Experiments, Heavy Quark Production, Relativistic Heavy Ion Physics",

author = "{The CMS collaboration cms-publication-committee-chair@cern.ch} and A. Tumasyan and W. Adam and Andrejkovic, {J. W.} and T. Bergauer and S. Chatterjee and K. Damanakis and M. Dragicevic and {Escalante Del Valle}, A. and Hussain, {P. S.} and M. Jeitler and N. Krammer and L. Lechner and D. Liko and I. Mikulec and P. Paulitsch and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and M. Sonawane and S. Templ and W. Waltenberger and Wulz, {C. E.} and Darwish, {M. R.} and T. Janssen and T. Kello and {Van Mechelen}, P. and Bols, {E. S.} and J. D{\textquoteright}Hondt and {De Moor}, A. and M. Delcourt and {El Faham}, H. and S. Lowette and A. Morton and D. M{\"u}ller and Sahasransu, {A. R.} and S. Tavernier and {Van Doninck}, W. and {Van Putte}, S. and D. Vannerom and B. Clerbaux and S. Dansana and {De Lentdecker}, G. and L. Favart and D. Hohov and J. Jaramillo and K. Lee and M. Mahdavikhorrami and I. Makarenko and A. Malara and A. Moraes",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = jan,

doi = "10.1007/JHEP01(2024)128",

language = "English",

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

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T1 - Study of charm hadronization with prompt Λc+ baryons in proton-proton and lead-lead collisions at sNN = 5.02 TeV

AU - The CMS collaboration cms-publication-committee-chair@cern.ch

AU - Tumasyan, A.

AU - Adam, W.

AU - Andrejkovic, J. W.

AU - Bergauer, T.

AU - Chatterjee, S.

AU - Damanakis, K.

AU - Dragicevic, M.

AU - Escalante Del Valle, A.

AU - Hussain, P. S.

AU - Jeitler, M.

AU - Krammer, N.

AU - Lechner, L.

AU - Liko, D.

AU - Mikulec, I.

AU - Paulitsch, P.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Sonawane, M.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Darwish, M. R.

AU - Janssen, T.

AU - Kello, T.

AU - Van Mechelen, P.

AU - Bols, E. S.

AU - D’Hondt, J.

AU - De Moor, A.

AU - Delcourt, M.

AU - El Faham, H.

AU - Lowette, S.

AU - Morton, A.

AU - Müller, D.

AU - Sahasransu, A. R.

AU - Tavernier, S.

AU - Van Doninck, W.

AU - Van Putte, S.

AU - Vannerom, D.

AU - Clerbaux, B.

AU - Dansana, S.

AU - De Lentdecker, G.

AU - Favart, L.

AU - Hohov, D.

AU - Jaramillo, J.

AU - Lee, K.

AU - Mahdavikhorrami, M.

AU - Makarenko, I.

AU - Malara, A.

AU - Moraes, A.

PY - 2024/1

Y1 - 2024/1

N2 - The production of prompt Λc + baryons is measured via the exclusive decay channel Λc +→pK−π+ at a center-of-mass energy per nucleon pair of 5.02 TeV, using proton-proton (pp) and lead-lead (PbPb) collision data collected by the CMS experiment at the CERN LHC. The pp and PbPb data were obtained in 2017 and 2018 with integrated luminosities of 252 and 0.607 nb−1, respectively. The measurements are performed within the Λc + rapidity interval |y| < 1 with transverse momentum (pT) ranges of 3–30 and 6–40 GeV/c for pp and PbPb collisions, respectively. Compared to the yields in pp collisions scaled by the expected number of nucleon-nucleon interactions, the observed yields of Λc + with pT> 10 GeV/c are strongly suppressed in PbPb collisions. The level of suppression depends significantly on the collision centrality. The Λc +/D0 production ratio is similar in PbPb and pp collisions at pT> 10 GeV/c, suggesting that the coalescence process does not play a dominant role in prompt Λc + baryon production at higher pT.

AB - The production of prompt Λc + baryons is measured via the exclusive decay channel Λc +→pK−π+ at a center-of-mass energy per nucleon pair of 5.02 TeV, using proton-proton (pp) and lead-lead (PbPb) collision data collected by the CMS experiment at the CERN LHC. The pp and PbPb data were obtained in 2017 and 2018 with integrated luminosities of 252 and 0.607 nb−1, respectively. The measurements are performed within the Λc + rapidity interval |y| < 1 with transverse momentum (pT) ranges of 3–30 and 6–40 GeV/c for pp and PbPb collisions, respectively. Compared to the yields in pp collisions scaled by the expected number of nucleon-nucleon interactions, the observed yields of Λc + with pT> 10 GeV/c are strongly suppressed in PbPb collisions. The level of suppression depends significantly on the collision centrality. The Λc +/D0 production ratio is similar in PbPb and pp collisions at pT> 10 GeV/c, suggesting that the coalescence process does not play a dominant role in prompt Λc + baryon production at higher pT.

KW - Heavy Ion Experiments

KW - Heavy Quark Production

KW - Relativistic Heavy Ion Physics

UR - http://www.scopus.com/inward/record.url?scp=85187885755&partnerID=8YFLogxK

U2 - 10.1007/JHEP01(2024)128

DO - 10.1007/JHEP01(2024)128

M3 - Article

AN - SCOPUS:85187885755

SN - 1029-8479

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 1

M1 - 128

ER -

Study of charm hadronization with prompt Λc+ baryons in proton-proton and lead-lead collisions at sNN = 5.02 TeV

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Keywords

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