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Phys Rev Lett. 2015 Jan 16;114(2):022301. Epub 2015 Jan 12.

ΛΛ Correlation function in Au+Au collisions at √[S(NN)]=200  GeV.

Adamczyk L1, Adkins JK2, Agakishiev G3, Aggarwal MM4, Ahammed Z5, Alekseev I6, Alford J7, Anson CD8, Aparin A3, Arkhipkin D9, Aschenauer EC9, Averichev GS3, Banerjee A5, Beavis DR9, Bellwied R10, Bhasin A11, Bhati AK4, Bhattarai P12, Bichsel H13, Bielcik J14, Bielcikova J15, Bland LC9, Bordyuzhin IG6, Borowski W16, Bouchet J7, Brandin AV17, Brovko SG18, Bültmann S19, Bunzarov I3, Burton TP9, Butterworth J20, Caines H21, Calderón de la Barca Sánchez M18, Campbell JM8, Cebra D18, Cendejas R22, Cervantes MC23, Chaloupka P14, Chang Z23, Chattopadhyay S5, Chen HF24, Chen JH25, Chen L26, Cheng J27, Cherney M28, Chikanian A21, Christie W9, Chwastowski J29, Codrington MJ12, Contin G30, Cramer JG13, Crawford HJ31, Cui X24, Das S32, Davila Leyva A12, De Silva LC28, Debbe RR9, Dedovich TG3, Deng J33, Derevschikov AA34, Derradi de Souza R35, di Ruzza B9, Didenko L9, Dilks C22, Ding F18, Djawotho P23, Dong X30, Drachenberg JL36, Draper JE18, Du CM37, Dunkelberger LE38, Dunlop JC9, Efimov LG3, Engelage J31, Engle KS39, Eppley G20, Eun L30, Evdokimov O40, Eyser O9, Fatemi R2, Fazio S9, Fedorisin J3, Filip P3, Fisyak Y9, Flores CE18, Gagliardi CA23, Gangadharan DR8, Garand D41, Geurts F20, Gibson A36, Girard M42, Gliske S43, Greiner L30, Grosnick D36, Gunarathne DS44, Guo Y24, Gupta A11, Gupta S11, Guryn W9, Haag B18, Hamed A23, Han LX25, Haque R45, Harris JW21, Heppelmann S22, Hirsch A41, Hoffmann GW12, Hofman DJ40, Horvat S21, Huang B9, Huang HZ38, Huang X27, Huck P26, Humanic TJ8, Igo G38, Jacobs WW46, Jang H47, Judd EG31, Kabana S16, Kalinkin D6, Kang K27, Kauder K40, Ke HW9, Keane D7, Kechechyan A3, Kesich A18, Khan ZH40, Kikola DP42, Kisel I48, Kisiel A42, Koetke DD36, Kollegger T48, Konzer J41, Koralt I19, Kosarzewski LK42, Kotchenda L17, Kraishan AF44, Kravtsov P17, Krueger K43, Kulakov I48, Kumar L45, Kycia RA29, Lamont MA9, Landgraf JM9, Landry KD38, Lauret J9, Lebedev A9, Lednicky R3, Lee JH9, Li C24, Li W25, Li X41, Li X44, Li Y27, Li ZM26, Lisa MA8, Liu F26, Ljubicic T9, Llope WJ20, Lomnitz M7, Longacre RS9, Luo X26, Ma GL25, Ma YG25, Mahapatra DP32, Majka R21, Margetis S7, Markert C12, Masui H30, Matis HS30, McDonald D10, McShane TS28, Minaev NG34, Mioduszewski S23, Mohanty B45, Mondal MM23, Morozov DA34, Mustafa MK30, Nandi BK49, Nasim M45, Nayak TK5, Nelson JM50, Nigmatkulov G17, Nogach LV34, Noh SY47, Novak J51, Nurushev SB34, Odyniec G30, Ogawa A9, Oh K52, Ohlson A21, Okorokov V17, Oldag EW12, Olvitt DL44, Page BS46, Pan YX38, Pandit Y40, Panebratsev Y3, Pawlak T42, Pawlik B53, Pei H26, Perkins C31, Pile P9, Planinic M54, Pluta J42, Poljak N54, Poniatowska K42, Porter J30, Poskanzer AM30, Pruthi NK4, Przybycien M1, Putschke J55, Qiu H30, Quintero A7, Ramachandran S2, Raniwala R56, Raniwala S56, Ray RL12, Riley CK21, Ritter HG30, Roberts JB20, Rogachevskiy OV3, Romero JL18, Ross JF28, Roy A5, Ruan L9, Rusnak J15, Rusnakova O14, Sahoo NR23, Sahu PK32, Sakrejda I30, Salur S30, Sandweiss J21, Sangaline E18, Sarkar A49, Schambach J12, Scharenberg RP41, Schmah AM30, Schmidke WB9, Schmitz N57, Seger J28, Seyboth P57, Shah N38, Shahaliev E3, Shanmuganathan PV7, Shao M24, Sharma B4, Shen WQ25, Shi SS30, Shou QY25, Sichtermann EP30, Simko M14, Skoby MJ46, Smirnov D9, Smirnov N21, Solanki D56, Sorensen P9, Spinka HM43, Srivastava B41, Stanislaus TD36, Stevens JR58, Stock R48, Strikhanov M17, Stringfellow B41, Sumbera M15, Sun X30, Sun XM30, Sun Y24, Sun Z37, Surrow B44, Svirida DN6, Symons TJ30, Szelezniak MA30, Takahashi J35, Tang AH9, Tang Z24, Tarnowsky T51, Thomas JH30, Timmins AR10, Tlusty D15, Tokarev M3, Trentalange S38, Tribble RE23, Tribedy P5, Trzeciak BA14, Tsai OD38, Turnau J53, Ullrich T9, Underwood DG43, Van Buren G9, van Nieuwenhuizen G58, Vandenbroucke M44, Vanfossen JA7, Varma R49, Vasconcelos GM35, Vasiliev AN34, Vertesi R15, Videbæk F9, Viyogi YP5, Vokal S3, Vossen A46, Wada M12, Wang F41, Wang G38, Wang H9, Wang JS37, Wang XL24, Wang Y27, Wang Y40, Webb G9, Webb JC9, Westfall GD51, Wieman H30, Wissink SW46, Witt R39, Wu YF26, Xiao Z27, Xie W41, Xin K20, Xu H37, Xu J26, Xu N30, Xu QH33, Xu Y24, Xu Z9, Yan W27, Yang C24, Yang Y37, Yang Y26, Ye Z40, Yepes P20, Yi L41, Yip K9, Yoo IK52, Yu N26, Zbroszczyk H42, Zha W24, Zhang JB26, Zhang JL33, Zhang S25, Zhang XP27, Zhang Y24, Zhang ZP24, Zhao F38, Zhao J26, Zhong C25, Zhu X27, Zhu YH25, Zoulkarneeva Y3, Zyzak M48; (STAR Collaboration).

Author information

1
AGH University of Science and Technology, Cracow, Poland.
2
University of Kentucky, Lexington, Kentucky, 40506-0055, USA.
3
Joint Institute for Nuclear Research, Dubna, 141 980, Russia.
4
Panjab University, Chandigarh 160014, India.
5
Variable Energy Cyclotron Centre, Kolkata 700064, India.
6
Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia.
7
Kent State University, Kent, Ohio 44242, USA.
8
Ohio State University, Columbus, Ohio 43210, USA.
9
Brookhaven National Laboratory, Upton, New York 11973, USA.
10
University of Houston, Houston, Texas 77204, USA.
11
University of Jammu, Jammu 180001, India.
12
University of Texas, Austin, Texas 78712, USA.
13
University of Washington, Seattle, Washington 98195, USA.
14
Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
15
Nuclear Physics Institute AS CR, 250 68 Řež/Prague, Czech Republic.
16
SUBATECH, Nantes, France.
17
Moscow Engineering Physics Institute, Moscow, Russia.
18
University of California, Davis, California 95616, USA.
19
Old Dominion University, Norfolk, Virginia 23529, USA.
20
Rice University, Houston, Texas 77251, USA.
21
Yale University, New Haven, Connecticut 06520, USA.
22
Pennsylvania State University, University Park, Pennsylvania 16802, USA.
23
Texas A&M University, College Station, Texas 77843, USA.
24
University of Science and Technology of China, Hefei 230026, China.
25
Shanghai Institute of Applied Physics, Shanghai 201800, China.
26
Central China Normal University (HZNU), Wuhan 430079, China.
27
Tsinghua University, Beijing 100084, China.
28
Creighton University, Omaha, Nebraska 68178, USA.
29
Cracow University of Technology, Cracow, Poland.
30
Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
31
University of California, Berkeley, California 94720, USA.
32
Institute of Physics, Bhubaneswar 751005, India.
33
Shandong University, Jinan, Shandong 250100, China.
34
Institute of High Energy Physics, Protvino, Russia.
35
Universidade Estadual de Campinas, Sao Paulo, Brazil.
36
Valparaiso University, Valparaiso, Indiana 46383, USA.
37
Institute of Modern Physics, Lanzhou, China.
38
University of California, Los Angeles, California 90095, USA.
39
United States Naval Academy, Annapolis, Maryland, 21402, USA.
40
University of Illinois at Chicago, Chicago, Illinois 60607, USA.
41
Purdue University, West Lafayette, Indiana 47907, USA.
42
Warsaw University of Technology, Warsaw, Poland.
43
Argonne National Laboratory, Argonne, Illinois 60439, USA.
44
Temple University, Philadelphia, Pennsylvania 19122, USA.
45
National Institute of Science Education and Research, Bhubaneswar 751005, India.
46
Indiana University, Bloomington, Indiana 47408, USA.
47
Korea Institute of Science and Technology Information, Daejeon, Korea.
48
Frankfurt Institute for Advanced Studies FIAS, Germany.
49
Indian Institute of Technology, Mumbai, India.
50
University of Birmingham, Birmingham, United Kingdom.
51
Michigan State University, East Lansing, Michigan 48824, USA.
52
Pusan National University, Pusan, Republic of Korea.
53
Institute of Nuclear Physics PAN, Cracow, Poland.
54
University of Zagreb, Zagreb, HR-10002 Croatia.
55
Wayne State University, Detroit, Michigan 48201, USA.
56
University of Rajasthan, Jaipur 302004, India.
57
Max-Planck-Institut für Physik, Munich, Germany.
58
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA.

Abstract

We present ΛΛ correlation measurements in heavy-ion collisions for Au+Au collisions at sqrt[s_{NN}]=200  GeV using the STAR experiment at the Relativistic Heavy-Ion Collider. The Lednický-Lyuboshitz analytical model has been used to fit the data to obtain a source size, a scattering length and an effective range. Implications of the measurement of the ΛΛ correlation function and interaction parameters for dihyperon searches are discussed.

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