First Measurement of Λc Baryon Production in Au+Au Collisions at sNN=200 GeV

Adam, Jaroslov; Adamczyk, L.; Adams, J. R.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Anderson, D. M.; Aparin, A.; Aschenauer, E. C.; Ashraf, M. U.; Atetalla, F. G.; Attri, A.; Averichev, G. S.; Bairathi, V.; Barish, K.; Behera, A.; Bellwied, R.; Bhasin, A.; Bielcik, J.; Bielcikova, J.; Bland, L. C.; Bordyuzhin, I. G.; Brandenburg, J. D.; Brandin, A. V.; Butterworth, J.; Caines, H.; Calderón de la Barca Sánchez, M.; Cebra, D.; Chakaberia, I.; Chaloupka, P.; Chan, B. K.; Chang, F-H.; Chang, Z.; Chankova-Bunzarova, N.; Chatterjee, A.; Chen, D.; Chen, J. H.; Chen, X.; Chen, Z.; Cheng, J.; Cherney, M.; Chevalier, M.; Choudhury, S.; Christie, W.; Crawford, H. J.; Csanád, M.; Daugherity, M.; Dedovich, T. G.; Deppner, I. M.; Derevschikov, A. A.; Didenko, L.; Dong, X.; Drachenberg, J. L.; Dunlop, J. C.; Edmonds, T.; Elsey, N.; Engelage, J.; Eppley, G.; Esha, R.; Esumi, S.; Evdokimov, O.; Ewigleben, J.; Eyser, O.; Fatemi, R.; Fazio, S.; Federic, P.; Fedorisin, J.; Feng, C. J.; Feng, Y.; Filip, P.; Finch, E.; Fisyak, Y.; Francisco, A.; Fulek, L.; Gagliardi, C. A.; Galatyuk, T.; Geurts, F.; Gibson, A.; Gopal, K.; Grosnick, D.; Guryn, W.; Hamad, A. I.; Hamed, A.; Harris, J. W.; He, W.; He, X.; Heppelmann, S.; Heppelmann, S.; Herrmann, N.; Hoffman, E.; Holub, L.; Hong, Y.; Horvat, S.; Hu, Y.; Huang, H. Z.; Huang, S. L.; Huang, T.; Huang, X.; Humanic, T. J.; Huo, P.; Igo, G.; Isenhower, D.; Jacobs, W. W.; Jena, C.; Jentsch, A.; JI, Y.; Jia, J.; Jiang, K.; Jowzaee, S.; Ju, X.; Judd, E. G.; Kabana, S.; Kabir, M. L.; Kagamaster, S.; Kalinkin, D.; Kang, K.; Kapukchyan, D.; Kauder, K.; Ke, H. W.; Keane, D.; Kechechyan, A.; Kelsey, M.; Khyzhniak, Y. V.; Kikoła, D. P.; Kim, C.; Kimelman, B.; Kincses, D.; Kinghorn, T. A.; Kisel, I.; Kiselev, A.; Kisiel, A.; Kocan, M.; Kochenda, L.; Kosarzewski, L. K.; Kramarik, L.; Kravtsov, P.; Krueger, K.; Kulathunga Mudiyanselage, N.; Kumar, L.; Kunnawalkam Elayavalli, R.; Kwasizur, J. H.; Lacey, R.; Lan, S.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, J. H.; Leung, Y. H.; Li, C.; Li, W.; Li, W.; Li, X.; Li, Y.; Liang, Y.; Licenik, R.; Lin, T.; Lin, Y.; Lisa, M. A.; Liu, F.; Liu, H.; Liu, P.; Liu, P.; Liu, T.; Liu, X.; Liu, Y.; Liu, Z.; Ljubicic, T.; Llope, W. J.; Longacre, R. S.; Lukow, N. S.; Luo, S.; Luo, X.; Ma, G. L.; Ma, L.; Ma, R.; Ma, Y. G.; Magdy, N.; Majka, R.; Mallick, D.; Margetis, S.; Markert, C.; Matis, H. S.; Mazer, J. A.; Minaev, N. G.; Mioduszewski, S.; Mohanty, B.; Mooney, I.; Moravcova, Z.; Morozov, D. A.; Nagy, M.; Nam, J. D.; Nasim, Md.; Nayak, K.; Neff, D.; Nelson, J. M.; Nemes, D. B.; Nie, M.; Nigmatkulov, G.; Niida, T.; Nogach, L. V.; Nonaka, T.; Odyniec, G.; Ogawa, A.; Oh, S.; Okorokov, V. A.; Page, B. S.; Pak, R.; Pandav, A.; Panebratsev, Y.; Pawlik, B.; Pawlowska, D.; Pei, H.; Perkins, C.; Pinsky, L.; Pintér, R. L.; Pluta, J.; Porter, J.; Posik, M.; Pruthi, N. K.; Przybycien, M.; Putschke, J.; Qiu, H.; Quintero, A.; Radhakrishnan, S. K.; Ramachandran, S.; Ray, R. L.; Reed, R.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Ruan, L.; Rusnak, J.; Sahoo, N. R.; Sako, H.; Salur, S.; Sandweiss, J.; Sato, S.; Schmidke, W. B.; Schmitz, N.; Schweid, B. R.; Seck, F.; Seger, J.; Sergeeva, M.; Seto, R.; Seyboth, P.; Shah, N.; Shahaliev, E.; Shanmuganathan, P. V.; Shao, M.; Shen, F.; Shen, W. Q.; Shi, S. S.; Shou, Q. Y.; Sichtermann, E. P.; Sikora, R.; Simko, M.; Singh, J.; Singha, S.; Smirnov, N.; Solyst, W.; Sorensen, P.; Spinka, H. M.; Srivastava, B.; Stanislaus, T. D.  S.; Stefaniak, M.; Stewart, D. J.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A.  P.; Sumbera, M.; Summa, B.; Sun, X. M.; Sun, Y.; Sun, Y.; Surrow, B.; Svirida, D. N.; Szymanski, P.; Tang, A. H.; Tang, Z.; Taranenko, A.; Tarnowsky, T.; Thomas, J. H.; Timmins, A. R.; Tlusty, D.; Tokarev, M.; Tomkiel, C. A.; Trentalange, S.; Tribble, R. E.; Tribedy, P.; Tripathy, S. K.; Tsai, O. D.; Tu, Z.; Ullrich, T.; Underwood, D. G.; Upsal, I.; Van Buren, G.; Vanek, J.; Vasiliev, A. N.; Vassiliev, I.; Videbæk, F.; Vokal, S.; Voloshin, S. A.; Wang, F.; Wang, G.; Wang, J. S.; Wang, P.; Wang, Y.; Wang, Y.; Wang, Z.; Webb, J. C.; Weidenkaff, P. C.; Wen, L.; Westfall, G. D.; Wieman, H.; Wissink, S. W.; Witt, R.; Wu, Y.; Xiao, Z. G.; Xie, G.; Xie, W.; Xu, H.; Xu, N.; Xu, Q. H.; Xu, Y. F.; Xu, Y.; Xu, Z.; Xu, Z.; Yang, C.; Yang, Q.; Yang, S.; Yang, Y.; Yang, Z.; Ye, Z.; Ye, Z.; Yi, L.; Yip, K.; Zbroszczyk, H.; Zha, W.; Zhang, D.; Zhang, S.; Zhang, S.; Zhang, X. P.; Zhang, Y.; Zhang, Z. J.; Zhang, Z.; Zhao, J.; Zhong, C.; Zhou, C.; Zhu, X.; Zhu, Z.; Zurek, M.; Zyzak, M.

doi:10.1103/PhysRevLett.124.172301

First Measurement of $Λ_{c}$ Baryon Production in $Au + Au$ Collisions at $\sqrt{s_{N N}} = 200 GeV$

Journal Article · Fri May 01 00:00:00 EDT 2020 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.124.172301· OSTI ID:1573479

Adam, Jaroslov; Adamczyk, L.; Adams, J. R.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Anderson, D. M.; Aparin, A.; Aschenauer, E. C.; Ashraf, M. U.; Atetalla, F. G.; Attri, A.; Averichev, G. S.; Bairathi, V.; Barish, K.; Behera, A.; Bellwied, R.; Bhasin, A. more »

Herein we report on the first measurement of the charmed baryon

Λ_{c}^{\pm}

production at midrapidity (

| y | < 1

) in

Au + Au

collisions at

\sqrt{s_{NN}} = 200 GeV

collected by the STAR experiment at the Relativistic Heavy Ion Collider. The

Λ_{c} / D^{0}

[denoting

(Λ_{c}^{+} + Λ_{c}^{-}) / (D^{0} + {\bar{D}}^{0})

] yield ratio is measured to be

1.08 \pm 0.16 (stat) \pm 0.26 (sys)

in the 0%–20% most central

Au + Au

collisions for the transverse momentum (

p_{T}

) range

3 < p_{T} < 6 GeV / c

. This is significantly larger than the pythia model calculations for

p + p

collisions. The measured

Λ_{c} / D^{0}

ratio, as a function of

p_{T}

and collision centrality, is comparable to the baryon-to-meson ratios for light and strange hadrons in

Au + Au

collisions. Model calculations including coalescence hadronization for charmed baryon and meson formation reproduce the features of our measured

Λ_{c} / D^{0}

ratio.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Texas A & M Univ., College Station, TX (United States); Univ. of Illinois, Chicago, IL (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Organization:: STAR Collaboration

Grant/Contract Number:: AC02-05CH11231; FG02-94ER40865; SC0012704; SC0015636

OSTI ID:: 1573479

Alternate ID(s):: OSTI ID: 1631659
OSTI ID: 1782831
OSTI ID: 1669347
OSTI ID: 1787656

Report Number(s):: BNL--212305-2019-JAAM; BNL--213777-2020-JAAM; DOE-UIC--ER40865-J2021-2

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 124; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1 The current record is supplemented by this collection	collection	January 2020
"Figure 1a (right-sign)" of "First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1/t1 The current record is supplemented by this dataset	dataset	January 2020
"Figure 1a (wrong-sign)" of "First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1/t2 The current record is supplemented by this dataset	dataset	January 2020
"Figure 1b (right-sign)" of "First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1/t3 The current record is supplemented by this dataset	dataset	January 2020
"Figure 1b (wrong-sign)" of "First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1/t4 The current record is supplemented by this dataset	dataset	January 2020
"Table 1" of "First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1/t5 The current record is supplemented by this dataset	dataset	January 2020
"Figure 2" of "First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1/t6 The current record is supplemented by this dataset	dataset	January 2020
"Figure 3" of "First measurement of $\Lambda_c$ baryon production in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.94228.v1/t7 The current record is supplemented by this dataset	dataset	January 2020

First Measurement of Λc Baryon Production in Au+Au Collisions at sNN =200 GeV

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First Measurement of $Λ_{c}$ Baryon Production in $Au + Au$ Collisions at $\sqrt{s_{N N}} = 200 GeV$