Observation of D_{s}^{±}/D^{0} Enhancement in Au+Au Collisions at sqrt[s_{NN}]=200  GeV.

Autor: Adam J; Brookhaven National Laboratory, Upton, New York 11973., Adamczyk L; AGH University of Science and Technology, FPACS, Cracow 30-059, Poland., Adams JR; The Ohio State University, Columbus, Ohio 43210., Adkins JK; University of Kentucky, Lexington, Kentucky 40506-0055., Agakishiev G; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Aggarwal MM; Panjab University, Chandigarh 160014, India., Ahammed Z; Variable Energy Cyclotron Centre, Kolkata 700064, India., Alekseev I; Alikhanov Institute for Theoretical and Experimental Physics NRC 'Kurchatov Institute', Moscow 117218, Russia.; National Research Nuclear University MEPhI, Moscow 115409, Russia., Anderson DM; Texas A&M University, College Station, Texas 77843., Aparin A; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Aschenauer EC; Brookhaven National Laboratory, Upton, New York 11973., Ashraf MU; Central China Normal University, Wuhan, Hubei 430079., Atetalla FG; Kent State University, Kent, Ohio 44242., Attri A; Panjab University, Chandigarh 160014, India., Averichev GS; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Bairathi V; Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile., Barish K; University of California, Riverside, California 92521., Behera A; State University of New York, Stony Brook, New York 11794., Bellwied R; University of Houston, Houston, Texas 77204., Bhasin A; University of Jammu, Jammu 180001, India., Bielcik J; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic., Bielcikova J; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic., Bland LC; Brookhaven National Laboratory, Upton, New York 11973., Bordyuzhin IG; Alikhanov Institute for Theoretical and Experimental Physics NRC 'Kurchatov Institute', Moscow 117218, Russia., Brandenburg JD; Brookhaven National Laboratory, Upton, New York 11973., Brandin AV; National Research Nuclear University MEPhI, Moscow 115409, Russia., Butterworth J; Rice University, Houston, Texas 77251., Caines H; Yale University, New Haven, Connecticut 06520., Calderón de la Barca Sánchez M; University of California, Davis, California 95616., Cebra D; University of California, Davis, California 95616., Chakaberia I; Brookhaven National Laboratory, Upton, New York 11973.; Kent State University, Kent, Ohio 44242., Chaloupka P; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic., Chan BK; University of California, Los Angeles, California 90095., Chang FH; National Cheng Kung University, Tainan 70101., Chang Z; Brookhaven National Laboratory, Upton, New York 11973., Chankova-Bunzarova N; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Chatterjee A; Central China Normal University, Wuhan, Hubei 430079., Chen D; University of California, Riverside, California 92521., Chen J; Shandong University, Qingdao, Shandong 266237., Chen JH; Fudan University, Shanghai 200433., Chen X; University of Science and Technology of China, Hefei, Anhui 230026., Chen Z; Shandong University, Qingdao, Shandong 266237., Cheng J; Tsinghua University, Beijing 100084., Cherney M; Creighton University, Omaha, Nebraska 68178., Chevalier M; University of California, Riverside, California 92521., Choudhury S; Fudan University, Shanghai 200433., Christie W; Brookhaven National Laboratory, Upton, New York 11973., Chu X; Brookhaven National Laboratory, Upton, New York 11973., Crawford HJ; University of California, Berkeley, California 94720., Csanád M; ELTE Eötvös Loránd University, Budapest, Hungary H-1117., Daugherity M; Abilene Christian University, Abilene, Texas 79699., Dedovich TG; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Deppner IM; University of Heidelberg, Heidelberg 69120, Germany., Derevschikov AA; NRC 'Kurchatov Institute', Institute of High Energy Physics, Protvino 142281, Russia., Didenko L; Brookhaven National Laboratory, Upton, New York 11973., Dong X; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Drachenberg JL; Abilene Christian University, Abilene, Texas 79699., Dunlop JC; Brookhaven National Laboratory, Upton, New York 11973., Edmonds T; Purdue University, West Lafayette, Indiana 47907., Elsey N; Wayne State University, Detroit, Michigan 48201., Engelage J; University of California, Berkeley, California 94720., Eppley G; Rice University, Houston, Texas 77251., Esumi S; University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan., Evdokimov O; University of Illinois at Chicago, Chicago, Illinois 60607., Ewigleben A; Lehigh University, Bethlehem, Pennsylvania 18015., Eyser O; Brookhaven National Laboratory, Upton, New York 11973., Fatemi R; University of Kentucky, Lexington, Kentucky 40506-0055., Fazio S; Brookhaven National Laboratory, Upton, New York 11973., Federic P; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic., Fedorisin J; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Feng CJ; National Cheng Kung University, Tainan 70101., Feng Y; Purdue University, West Lafayette, Indiana 47907., Filip P; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Finch E; Southern Connecticut State University, New Haven, Connecticut 06515., Fisyak Y; Brookhaven National Laboratory, Upton, New York 11973., Francisco A; Yale University, New Haven, Connecticut 06520., Fu C; Central China Normal University, Wuhan, Hubei 430079., Fulek L; AGH University of Science and Technology, FPACS, Cracow 30-059, Poland., Gagliardi CA; Texas A&M University, College Station, Texas 77843., Galatyuk T; Technische Universität Darmstadt, Darmstadt 64289, Germany., Geurts F; Rice University, Houston, Texas 77251., Ghimire N; Temple University, Philadelphia, Pennsylvania 19122., Gibson A; Valparaiso University, Valparaiso, Indiana 46383., Gopal K; Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India., Gou X; Shandong University, Qingdao, Shandong 266237., Grosnick D; Valparaiso University, Valparaiso, Indiana 46383., Guryn W; Brookhaven National Laboratory, Upton, New York 11973., Hamad AI; Kent State University, Kent, Ohio 44242., Hamed A; American University of Cairo, New Cairo 11835, New Cairo, Egypt., Harabasz S; Technische Universität Darmstadt, Darmstadt 64289, Germany., Harris JW; Yale University, New Haven, Connecticut 06520., He S; Central China Normal University, Wuhan, Hubei 430079., He W; Fudan University, Shanghai 200433., He X; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000., He Y; Shandong University, Qingdao, Shandong 266237., Heppelmann S; University of California, Davis, California 95616., Heppelmann S; Pennsylvania State University, University Park, Pennsylvania 16802., Herrmann N; University of Heidelberg, Heidelberg 69120, Germany., Hoffman E; University of Houston, Houston, Texas 77204., Holub L; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic., Hong Y; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Horvat S; Yale University, New Haven, Connecticut 06520., Hu Y; Fudan University, Shanghai 200433., Huang HZ; University of California, Los Angeles, California 90095., Huang SL; State University of New York, Stony Brook, New York 11794., Huang T; National Cheng Kung University, Tainan 70101., Huang X; Tsinghua University, Beijing 100084., Humanic TJ; The Ohio State University, Columbus, Ohio 43210., Huo P; State University of New York, Stony Brook, New York 11794., Igo G; University of California, Los Angeles, California 90095., Isenhower D; Abilene Christian University, Abilene, Texas 79699., Jacobs WW; Indiana University, Bloomington, Indiana 47408., Jena C; Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India., Jentsch A; Brookhaven National Laboratory, Upton, New York 11973., Ji Y; University of Science and Technology of China, Hefei, Anhui 230026., Jia J; Brookhaven National Laboratory, Upton, New York 11973.; State University of New York, Stony Brook, New York 11794., Jiang K; University of Science and Technology of China, Hefei, Anhui 230026., Jowzaee S; Wayne State University, Detroit, Michigan 48201., Ju X; University of Science and Technology of China, Hefei, Anhui 230026., Judd EG; University of California, Berkeley, California 94720., Kabana S; Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile., Kabir ML; University of California, Riverside, California 92521., Kagamaster S; Lehigh University, Bethlehem, Pennsylvania 18015., Kalinkin D; Indiana University, Bloomington, Indiana 47408., Kang K; Tsinghua University, Beijing 100084., Kapukchyan D; University of California, Riverside, California 92521., Kauder K; Brookhaven National Laboratory, Upton, New York 11973., Ke HW; Brookhaven National Laboratory, Upton, New York 11973., Keane D; Kent State University, Kent, Ohio 44242., Kechechyan A; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Kelsey M; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Khyzhniak YV; National Research Nuclear University MEPhI, Moscow 115409, Russia., Kikoła DP; Warsaw University of Technology, Warsaw 00-661, Poland., Kim C; University of California, Riverside, California 92521., Kimelman B; University of California, Davis, California 95616., Kincses D; ELTE Eötvös Loránd University, Budapest, Hungary H-1117., Kinghorn TA; University of California, Davis, California 95616., Kisel I; Frankfurt Institute for Advanced Studies FIAS, Frankfurt 60438, Germany., Kiselev A; Brookhaven National Laboratory, Upton, New York 11973., Kocan M; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic., Kochenda L; National Research Nuclear University MEPhI, Moscow 115409, Russia., Kosarzewski LK; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic., Kramarik L; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic., Kravtsov P; National Research Nuclear University MEPhI, Moscow 115409, Russia., Krueger K; Argonne National Laboratory, Argonne, Illinois 60439., Kulathunga Mudiyanselage N; University of Houston, Houston, Texas 77204., Kumar L; Panjab University, Chandigarh 160014, India., Kumar S; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000., Kunnawalkam Elayavalli R; Wayne State University, Detroit, Michigan 48201., Kwasizur JH; Indiana University, Bloomington, Indiana 47408., Lacey R; State University of New York, Stony Brook, New York 11794., Lan S; Central China Normal University, Wuhan, Hubei 430079., Landgraf JM; Brookhaven National Laboratory, Upton, New York 11973., Lauret J; Brookhaven National Laboratory, Upton, New York 11973., Lebedev A; Brookhaven National Laboratory, Upton, New York 11973., Lednicky R; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Lee JH; Brookhaven National Laboratory, Upton, New York 11973., Leung YH; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Li C; Shandong University, Qingdao, Shandong 266237., Li C; University of Science and Technology of China, Hefei, Anhui 230026., Li W; Rice University, Houston, Texas 77251., Li W; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Li X; University of Science and Technology of China, Hefei, Anhui 230026., Li Y; Tsinghua University, Beijing 100084., Liang Y; Kent State University, Kent, Ohio 44242., Licenik R; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic., Lin T; Texas A&M University, College Station, Texas 77843., Lin Y; Central China Normal University, Wuhan, Hubei 430079., Lisa MA; The Ohio State University, Columbus, Ohio 43210., Liu F; Central China Normal University, Wuhan, Hubei 430079., Liu H; Indiana University, Bloomington, Indiana 47408., Liu P; State University of New York, Stony Brook, New York 11794., Liu P; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Liu T; Yale University, New Haven, Connecticut 06520., Liu X; The Ohio State University, Columbus, Ohio 43210., Liu Y; Texas A&M University, College Station, Texas 77843., Liu Z; University of Science and Technology of China, Hefei, Anhui 230026., Ljubicic T; Brookhaven National Laboratory, Upton, New York 11973., Llope WJ; Wayne State University, Detroit, Michigan 48201., Longacre RS; Brookhaven National Laboratory, Upton, New York 11973., Lukow NS; Temple University, Philadelphia, Pennsylvania 19122., Luo S; University of Illinois at Chicago, Chicago, Illinois 60607., Luo X; Central China Normal University, Wuhan, Hubei 430079., Ma GL; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Ma L; Fudan University, Shanghai 200433., Ma R; Brookhaven National Laboratory, Upton, New York 11973., Ma YG; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Magdy N; University of Illinois at Chicago, Chicago, Illinois 60607., Majka R; Yale University, New Haven, Connecticut 06520., Mallick D; National Institute of Science Education and Research, HBNI, Jatni 752050, India., Margetis S; Kent State University, Kent, Ohio 44242., Markert C; University of Texas, Austin, Texas 78712., Matis HS; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Mazer JA; Rutgers University, Piscataway, New Jersey 08854., Minaev NG; NRC 'Kurchatov Institute', Institute of High Energy Physics, Protvino 142281, Russia., Mioduszewski S; Texas A&M University, College Station, Texas 77843., Mohanty B; National Institute of Science Education and Research, HBNI, Jatni 752050, India., Mooney I; Wayne State University, Detroit, Michigan 48201., Moravcova Z; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic., Morozov DA; NRC 'Kurchatov Institute', Institute of High Energy Physics, Protvino 142281, Russia., Nagy M; ELTE Eötvös Loránd University, Budapest, Hungary H-1117., Nam JD; Temple University, Philadelphia, Pennsylvania 19122., Nasim M; Indian Institute of Science Education and Research (IISER), Berhampur 760010, India., Nayak K; Central China Normal University, Wuhan, Hubei 430079., Neff D; University of California, Los Angeles, California 90095., Nelson JM; University of California, Berkeley, California 94720., Nemes DB; Yale University, New Haven, Connecticut 06520., Nie M; Shandong University, Qingdao, Shandong 266237., Nigmatkulov G; National Research Nuclear University MEPhI, Moscow 115409, Russia., Niida T; University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan., Nogach LV; NRC 'Kurchatov Institute', Institute of High Energy Physics, Protvino 142281, Russia., Nonaka T; University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan., Nunes AS; Brookhaven National Laboratory, Upton, New York 11973., Odyniec G; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Ogawa A; Brookhaven National Laboratory, Upton, New York 11973., Oh S; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Okorokov VA; National Research Nuclear University MEPhI, Moscow 115409, Russia., Page BS; Brookhaven National Laboratory, Upton, New York 11973., Pak R; Brookhaven National Laboratory, Upton, New York 11973., Pandav A; National Institute of Science Education and Research, HBNI, Jatni 752050, India., Panebratsev Y; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Pawlik B; Institute of Nuclear Physics PAN, Cracow 31-342, Poland., Pawlowska D; Warsaw University of Technology, Warsaw 00-661, Poland., Pei H; Central China Normal University, Wuhan, Hubei 430079., Perkins C; University of California, Berkeley, California 94720., Pinsky L; University of Houston, Houston, Texas 77204., Pintér RL; ELTE Eötvös Loránd University, Budapest, Hungary H-1117., Pluta J; Warsaw University of Technology, Warsaw 00-661, Poland., Pokhrel BR; Temple University, Philadelphia, Pennsylvania 19122., Porter J; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Posik M; Temple University, Philadelphia, Pennsylvania 19122., Pruthi NK; Panjab University, Chandigarh 160014, India., Przybycien M; AGH University of Science and Technology, FPACS, Cracow 30-059, Poland., Putschke J; Wayne State University, Detroit, Michigan 48201., Qiu H; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000., Quintero A; Temple University, Philadelphia, Pennsylvania 19122., Radhakrishnan SK; Kent State University, Kent, Ohio 44242., Ramachandran S; University of Kentucky, Lexington, Kentucky 40506-0055., Ray RL; University of Texas, Austin, Texas 78712., Reed R; Lehigh University, Bethlehem, Pennsylvania 18015., Ritter HG; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Rogachevskiy OV; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Romero JL; University of California, Davis, California 95616., Ruan L; Brookhaven National Laboratory, Upton, New York 11973., Rusnak J; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic., Sahoo NR; Shandong University, Qingdao, Shandong 266237., Sako H; University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan., Salur S; Rutgers University, Piscataway, New Jersey 08854., Sandweiss J; Yale University, New Haven, Connecticut 06520., Sato S; University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan., Schmidke WB; Brookhaven National Laboratory, Upton, New York 11973., Schmitz N; Max-Planck-Institut für Physik, Munich 80805, Germany., Schweid BR; State University of New York, Stony Brook, New York 11794., Seck F; Technische Universität Darmstadt, Darmstadt 64289, Germany., Seger J; Creighton University, Omaha, Nebraska 68178., Sergeeva M; University of California, Los Angeles, California 90095., Seto R; University of California, Riverside, California 92521., Seyboth P; Max-Planck-Institut für Physik, Munich 80805, Germany., Shah N; Indian Institute Technology, Patna, Bihar 801106, India., Shahaliev E; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Shanmuganathan PV; Brookhaven National Laboratory, Upton, New York 11973., Shao M; University of Science and Technology of China, Hefei, Anhui 230026., Sheikh AI; Kent State University, Kent, Ohio 44242., Shen WQ; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Shi SS; Central China Normal University, Wuhan, Hubei 430079., Shi Y; Shandong University, Qingdao, Shandong 266237., Shou QY; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Sichtermann EP; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Sikora R; AGH University of Science and Technology, FPACS, Cracow 30-059, Poland., Simko M; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic., Singh J; Panjab University, Chandigarh 160014, India., Singha S; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000., Smirnov N; Yale University, New Haven, Connecticut 06520., Solyst W; Indiana University, Bloomington, Indiana 47408., Sorensen P; Brookhaven National Laboratory, Upton, New York 11973., Spinka HM; Argonne National Laboratory, Argonne, Illinois 60439., Srivastava B; Purdue University, West Lafayette, Indiana 47907., Stanislaus TDS; Valparaiso University, Valparaiso, Indiana 46383., Stefaniak M; Warsaw University of Technology, Warsaw 00-661, Poland., Stewart DJ; Yale University, New Haven, Connecticut 06520., Strikhanov M; National Research Nuclear University MEPhI, Moscow 115409, Russia., Stringfellow B; Purdue University, West Lafayette, Indiana 47907., Suaide AAP; Universidade de São Paulo, São Paulo, Brazil 05314-970., Sumbera M; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic., Summa B; Pennsylvania State University, University Park, Pennsylvania 16802., Sun XM; Central China Normal University, Wuhan, Hubei 430079., Sun X; University of Illinois at Chicago, Chicago, Illinois 60607., Sun Y; University of Science and Technology of China, Hefei, Anhui 230026., Sun Y; Huzhou University, Huzhou, Zhejiang 313000., Surrow B; Temple University, Philadelphia, Pennsylvania 19122., Svirida DN; Alikhanov Institute for Theoretical and Experimental Physics NRC 'Kurchatov Institute', Moscow 117218, Russia., Szymanski P; Warsaw University of Technology, Warsaw 00-661, Poland., Tang AH; Brookhaven National Laboratory, Upton, New York 11973., Tang Z; University of Science and Technology of China, Hefei, Anhui 230026., Taranenko A; National Research Nuclear University MEPhI, Moscow 115409, Russia., Tarnowsky T; Michigan State University, East Lansing, Michigan 48824., Thomas JH; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Timmins AR; University of Houston, Houston, Texas 77204., Tlusty D; Creighton University, Omaha, Nebraska 68178., Tokarev M; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Tomkiel CA; Lehigh University, Bethlehem, Pennsylvania 18015., Trentalange S; University of California, Los Angeles, California 90095., Tribble RE; Texas A&M University, College Station, Texas 77843., Tribedy P; Brookhaven National Laboratory, Upton, New York 11973., Tripathy SK; ELTE Eötvös Loránd University, Budapest, Hungary H-1117., Tsai OD; University of California, Los Angeles, California 90095., Tu Z; Brookhaven National Laboratory, Upton, New York 11973., Ullrich T; Brookhaven National Laboratory, Upton, New York 11973., Underwood DG; Argonne National Laboratory, Argonne, Illinois 60439., Upsal I; Brookhaven National Laboratory, Upton, New York 11973.; Shandong University, Qingdao, Shandong 266237., Van Buren G; Brookhaven National Laboratory, Upton, New York 11973., Vanek J; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic., Vasiliev AN; NRC 'Kurchatov Institute', Institute of High Energy Physics, Protvino 142281, Russia., Vassiliev I; Frankfurt Institute for Advanced Studies FIAS, Frankfurt 60438, Germany., Videbæk F; Brookhaven National Laboratory, Upton, New York 11973., Vokal S; Joint Institute for Nuclear Research, Dubna 141 980, Russia., Voloshin SA; Wayne State University, Detroit, Michigan 48201., Wang F; Purdue University, West Lafayette, Indiana 47907., Wang G; University of California, Los Angeles, California 90095., Wang JS; Huzhou University, Huzhou, Zhejiang 313000., Wang P; University of Science and Technology of China, Hefei, Anhui 230026., Wang Y; Central China Normal University, Wuhan, Hubei 430079., Wang Y; Tsinghua University, Beijing 100084., Wang Z; Shandong University, Qingdao, Shandong 266237., Webb JC; Brookhaven National Laboratory, Upton, New York 11973., Weidenkaff PC; University of Heidelberg, Heidelberg 69120, Germany., Wen L; University of California, Los Angeles, California 90095., Westfall GD; Michigan State University, East Lansing, Michigan 48824., Wieman H; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Wissink SW; Indiana University, Bloomington, Indiana 47408., Witt R; United States Naval Academy, Annapolis, Maryland 21402., Wu Y; University of California, Riverside, California 92521., Xiao ZG; Tsinghua University, Beijing 100084., Xie G; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Xie W; Purdue University, West Lafayette, Indiana 47907., Xu H; Huzhou University, Huzhou, Zhejiang 313000., Xu N; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Xu QH; Shandong University, Qingdao, Shandong 266237., Xu YF; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Xu Y; Shandong University, Qingdao, Shandong 266237., Xu Z; Brookhaven National Laboratory, Upton, New York 11973., Xu Z; University of California, Los Angeles, California 90095., Yang C; Shandong University, Qingdao, Shandong 266237., Yang Q; Shandong University, Qingdao, Shandong 266237., Yang S; Brookhaven National Laboratory, Upton, New York 11973., Yang Y; National Cheng Kung University, Tainan 70101., Yang Z; Central China Normal University, Wuhan, Hubei 430079., Ye Z; Rice University, Houston, Texas 77251., Ye Z; University of Illinois at Chicago, Chicago, Illinois 60607., Yi L; Shandong University, Qingdao, Shandong 266237., Yip K; Brookhaven National Laboratory, Upton, New York 11973., Yu Y; Shandong University, Qingdao, Shandong 266237., Zbroszczyk H; Warsaw University of Technology, Warsaw 00-661, Poland., Zha W; University of Science and Technology of China, Hefei, Anhui 230026., Zhang C; State University of New York, Stony Brook, New York 11794., Zhang D; Central China Normal University, Wuhan, Hubei 430079., Zhang S; University of Science and Technology of China, Hefei, Anhui 230026., Zhang S; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Zhang XP; Tsinghua University, Beijing 100084., Zhang Y; University of Science and Technology of China, Hefei, Anhui 230026., Zhang Y; Central China Normal University, Wuhan, Hubei 430079., Zhang ZJ; National Cheng Kung University, Tainan 70101., Zhang Z; Brookhaven National Laboratory, Upton, New York 11973., Zhang Z; University of Illinois at Chicago, Chicago, Illinois 60607., Zhao J; Purdue University, West Lafayette, Indiana 47907., Zhong C; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Zhou C; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800., Zhu X; Tsinghua University, Beijing 100084., Zhu Z; Shandong University, Qingdao, Shandong 266237., Zurek M; Lawrence Berkeley National Laboratory, Berkeley, California 94720., Zyzak M; Frankfurt Institute for Advanced Studies FIAS, Frankfurt 60438, Germany.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2021 Aug 27; Vol. 127 (9), pp. 092301.
DOI: 10.1103/PhysRevLett.127.092301
Abstrakt: We report on the first measurement of charm-strange meson D_{s}^{±} production at midrapidity in Au+Au collisions at sqrt[s_{NN}]=200  GeV from the STAR experiment. The yield ratio between strange (D_{s}^{±}) and nonstrange (D^{0}) open-charm mesons is presented and compared to model calculations. A significant enhancement, relative to a pythia simulation of p+p collisions, is observed in the D_{s}^{±}/D^{0} yield ratio in Au+Au collisions over a large range of collision centralities. Model calculations incorporating abundant strange-quark production in the quark-gluon plasma and coalescence hadronization qualitatively reproduce the data. The transverse-momentum integrated yield ratio of D_{s}^{±}/D^{0} at midrapidity is consistent with a prediction from a statistical hadronization model with the parameters constrained by the yields of light and strange hadrons measured at the same collision energy. These results suggest that the coalescence of charm quarks with strange quarks in the quark-gluon plasma plays an important role in D_{s}^{±}-meson production in heavy-ion collisions.
Databáze: MEDLINE