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Open Access Publications from the University of California

First Measurement of Λ_{c} Baryon Production in Au+Au Collisions at sqrt[s_{NN}]=200  GeV.

  • Author(s): Adam, J;
  • Adamczyk, L;
  • Adams, JR;
  • Adkins, JK;
  • Agakishiev, G;
  • Aggarwal, MM;
  • Ahammed, Z;
  • Alekseev, I;
  • Anderson, DM;
  • Aparin, A;
  • Aschenauer, EC;
  • Ashraf, MU;
  • Atetalla, FG;
  • Attri, A;
  • Averichev, GS;
  • Bairathi, V;
  • Barish, K;
  • Behera, A;
  • Bellwied, R;
  • Bhasin, A;
  • Bielcik, J;
  • Bielcikova, J;
  • Bland, LC;
  • Bordyuzhin, IG;
  • Brandenburg, JD;
  • Brandin, AV;
  • Butterworth, J;
  • Caines, H;
  • Calderón de la Barca Sánchez, M;
  • Cebra, D;
  • Chakaberia, I;
  • Chaloupka, P;
  • Chan, BK;
  • Chang, F-H;
  • Chang, Z;
  • Chankova-Bunzarova, N;
  • Chatterjee, A;
  • Chen, D;
  • Chen, JH;
  • Chen, X;
  • Chen, Z;
  • Cheng, J;
  • Cherney, M;
  • Chevalier, M;
  • Choudhury, S;
  • Christie, W;
  • Crawford, HJ;
  • Csanád, M;
  • Daugherity, M;
  • Dedovich, TG;
  • Deppner, IM;
  • Derevschikov, AA;
  • Didenko, L;
  • Dong, X;
  • Drachenberg, JL;
  • Dunlop, JC;
  • 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, CJ;
  • Feng, Y;
  • Filip, P;
  • Finch, E;
  • Fisyak, Y;
  • Francisco, A;
  • Fulek, L;
  • Gagliardi, CA;
  • Galatyuk, T;
  • Geurts, F;
  • Gibson, A;
  • Gopal, K;
  • Grosnick, D;
  • Guryn, W;
  • Hamad, AI;
  • Hamed, A;
  • Harris, JW;
  • He, W;
  • He, X;
  • Heppelmann, S;
  • Heppelmann, S;
  • Herrmann, N;
  • Hoffman, E;
  • Holub, L;
  • Hong, Y;
  • Horvat, S;
  • Hu, Y;
  • Huang, HZ;
  • Huang, SL;
  • Huang, T;
  • Huang, X;
  • Humanic, TJ;
  • Huo, P;
  • Igo, G;
  • Isenhower, D;
  • Jacobs, WW;
  • Jena, C;
  • Jentsch, A;
  • Ji, Y;
  • Jia, J;
  • Jiang, K;
  • Jowzaee, S;
  • Ju, X;
  • Judd, EG;
  • Kabana, S;
  • Kabir, ML;
  • Kagamaster, S;
  • Kalinkin, D;
  • Kang, K;
  • Kapukchyan, D;
  • Kauder, K;
  • Ke, HW;
  • Keane, D;
  • Kechechyan, A;
  • Kelsey, M;
  • Khyzhniak, YV;
  • Kikoła, DP;
  • Kim, C;
  • Kimelman, B;
  • Kincses, D;
  • Kinghorn, TA;
  • Kisel, I;
  • Kiselev, A;
  • Kisiel, A;
  • Kocan, M;
  • Kochenda, L;
  • Kosarzewski, LK;
  • Kramarik, L;
  • Kravtsov, P;
  • Krueger, K;
  • Kulathunga Mudiyanselage, N;
  • Kumar, L;
  • Kunnawalkam Elayavalli, R;
  • Kwasizur, JH;
  • Lacey, R;
  • Lan, S;
  • Landgraf, JM;
  • Lauret, J;
  • Lebedev, A;
  • Lednicky, R;
  • Lee, JH;
  • Leung, YH;
  • Li, C;
  • Li, W;
  • Li, W;
  • Li, X;
  • Li, Y;
  • Liang, Y;
  • Licenik, R;
  • Lin, T;
  • Lin, Y;
  • Lisa, MA;
  • Liu, F;
  • Liu, H;
  • Liu, P;
  • Liu, P;
  • Liu, T;
  • Liu, X;
  • Liu, Y;
  • Liu, Z;
  • Ljubicic, T;
  • Llope, WJ;
  • Longacre, RS;
  • Lukow, NS;
  • Luo, S;
  • Luo, X;
  • Ma, GL;
  • Ma, L;
  • Ma, R;
  • Ma, YG;
  • Magdy, N;
  • Majka, R;
  • Mallick, D;
  • Margetis, S;
  • Markert, C;
  • Matis, HS;
  • Mazer, JA;
  • Minaev, NG;
  • Mioduszewski, S;
  • Mohanty, B;
  • Mooney, I;
  • Moravcova, Z;
  • Morozov, DA;
  • Nagy, M;
  • Nam, JD;
  • Nasim, Md;
  • Nayak, K;
  • Neff, D;
  • Nelson, JM;
  • Nemes, DB;
  • Nie, M;
  • Nigmatkulov, G;
  • Niida, T;
  • Nogach, LV;
  • Nonaka, T;
  • Odyniec, G;
  • Ogawa, A;
  • Oh, S;
  • Okorokov, VA;
  • Page, BS;
  • Pak, R;
  • Pandav, A;
  • Panebratsev, Y;
  • Pawlik, B;
  • Pawlowska, D;
  • Pei, H;
  • Perkins, C;
  • Pinsky, L;
  • Pintér, RL;
  • Pluta, J;
  • Porter, J;
  • Posik, M;
  • Pruthi, NK;
  • Przybycien, M;
  • Putschke, J;
  • Qiu, H;
  • Quintero, A;
  • Radhakrishnan, SK;
  • Ramachandran, S;
  • Ray, RL;
  • Reed, R;
  • Ritter, HG;
  • Roberts, JB;
  • Rogachevskiy, OV;
  • Romero, JL;
  • Ruan, L;
  • Rusnak, J;
  • Sahoo, NR;
  • Sako, H;
  • Salur, S;
  • Sandweiss, J;
  • Sato, S;
  • Schmidke, WB;
  • Schmitz, N;
  • Schweid, BR;
  • Seck, F;
  • Seger, J;
  • Sergeeva, M;
  • Seto, R;
  • Seyboth, P;
  • Shah, N;
  • Shahaliev, E;
  • Shanmuganathan, PV;
  • Shao, M;
  • Shen, F;
  • Shen, WQ;
  • Shi, SS;
  • Shou, QY;
  • Sichtermann, EP;
  • Sikora, R;
  • Simko, M;
  • Singh, J;
  • Singha, S;
  • Smirnov, N;
  • Solyst, W;
  • Sorensen, P;
  • Spinka, HM;
  • Srivastava, B;
  • Stanislaus, TDS;
  • Stefaniak, M;
  • Stewart, DJ;
  • Strikhanov, M;
  • Stringfellow, B;
  • Suaide, AAP;
  • Sumbera, M;
  • Summa, B;
  • Sun, XM;
  • Sun, Y;
  • Sun, Y;
  • Surrow, B;
  • Svirida, DN;
  • Szymanski, P;
  • Tang, AH;
  • Tang, Z;
  • Taranenko, A;
  • Tarnowsky, T;
  • Thomas, JH;
  • Timmins, AR;
  • Tlusty, D;
  • Tokarev, M;
  • Tomkiel, CA;
  • Trentalange, S;
  • Tribble, RE;
  • Tribedy, P;
  • Tripathy, SK;
  • Tsai, OD;
  • Tu, Z;
  • Ullrich, T;
  • Underwood, DG;
  • Upsal, I;
  • Van Buren, G;
  • Vanek, J;
  • Vasiliev, AN;
  • Vassiliev, I;
  • Videbæk, F;
  • Vokal, S;
  • Voloshin, SA;
  • Wang, F;
  • Wang, G;
  • Wang, JS;
  • Wang, P;
  • Wang, Y;
  • Wang, Y;
  • Wang, Z;
  • Webb, JC;
  • Weidenkaff, PC;
  • Wen, L;
  • Westfall, GD;
  • Wieman, H;
  • Wissink, SW;
  • Witt, R;
  • Wu, Y;
  • Xiao, ZG;
  • Xie, G;
  • Xie, W;
  • Xu, H;
  • Xu, N;
  • Xu, QH;
  • Xu, YF;
  • 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, XP;
  • Zhang, Y;
  • Zhang, ZJ;
  • Zhang, Z;
  • Zhao, J;
  • Zhong, C;
  • Zhou, C;
  • Zhu, X;
  • Zhu, Z;
  • Zurek, M;
  • Zyzak, M;
  • STAR Collaboration
  • et al.
Abstract

We report on the first measurement of the charmed baryon Λ_{c}^{±} 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}+D[over ¯]^{0})] yield ratio is measured to be 1.08±0.16  (stat)±0.26  (sys) in the 0%-20% most central Au+Au collisions for the transverse momentum (p_{T}) range 3

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