First Observation of the Directed Flow of D^{0} and D^{0}[over ¯] in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

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

doi:10.1103/PhysRevLett.123.162301

First Observation of the Directed Flow of D^{0} and D^{0}[over ¯] in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

Phys Rev Lett. 2019 Oct 18;123(16):162301. doi: 10.1103/PhysRevLett.123.162301.

Authors

J Adam¹, L Adamczyk², J R Adams³, J K Adkins⁴, G Agakishiev⁵, M M Aggarwal⁶, Z Ahammed⁷, I Alekseev^{8

9}, D M Anderson¹⁰, R Aoyama¹¹, A Aparin⁵, E C Aschenauer¹, M U Ashraf¹², F G Atetalla¹³, A Attri⁶, G S Averichev⁵, V Bairathi¹⁴, K Barish¹⁵, A J Bassill¹⁵, A Behera¹⁶, R Bellwied¹⁷, A Bhasin¹⁸, A K Bhati⁶, J Bielcik¹⁹, J Bielcikova²⁰, L C Bland¹, I G Bordyuzhin⁸, J D Brandenburg^{1

21}, A V Brandin⁹, J Bryslawskyj¹⁵, I Bunzarov⁵, J Butterworth²², H Caines²³, M Calderón de la Barca Sánchez²⁴, D Cebra²⁴, I Chakaberia^{1

13}, P Chaloupka¹⁹, B K Chan²⁵, F-H Chang²⁶, Z Chang¹, N Chankova-Bunzarova⁵, A Chatterjee⁷, S Chattopadhyay⁷, J H Chen²⁷, X Chen²⁸, J Cheng¹², M Cherney²⁹, W Christie²⁷, G Contin³⁰, H J Crawford³¹, M Csanád³², S Das³³, T G Dedovich⁵, I M Deppner³⁴, A A Derevschikov³⁵, L Didenko¹, C Dilks³⁶, X Dong³⁰, J L Drachenberg³⁷, J C Dunlop¹, T Edmonds³⁸, N Elsey³⁹, J Engelage³¹, G Eppley²², R Esha¹⁶, S Esumi¹¹, O Evdokimov⁴⁰, J Ewigleben⁴¹, O Eyser¹, R Fatemi⁴, S Fazio¹, P Federic²⁰, J Fedorisin⁵, Y Feng³⁸, P Filip⁵, E Finch⁴², Y Fisyak¹, L Fulek², C A Gagliardi¹⁰, T Galatyuk⁴³, F Geurts²², A Gibson⁴⁴, K Gopal⁴⁵, L Greiner³⁰, D Grosnick⁴⁴, A Gupta¹⁸, W Guryn¹, A I Hamad¹³, A Hamed⁴⁶, J W Harris²³, L He³⁸, S Heppelmann²⁴, S Heppelmann³⁶, N Herrmann³⁴, L Holub¹⁹, Y Hong³⁰, S Horvat²³, B Huang⁴⁰, H Z Huang²⁵, S L Huang¹⁶, T Huang²⁶, X Huang¹², T J Humanic³, P Huo¹⁶, G Igo²⁵, W W Jacobs⁴⁷, C Jena⁴⁵, A Jentsch¹, Y Ji²⁸, J Jia^{1

16}, K Jiang²⁸, S Jowzaee³⁹, X Ju²⁸, E G Judd³¹, S Kabana¹³, S Kagamaster⁴¹, D Kalinkin⁴⁷, K Kang¹², D Kapukchyan¹⁵, K Kauder¹, H W Ke¹, D Keane¹³, A Kechechyan⁵, M Kelsey³⁰, Y V Khyzhniak⁹, D P Kikoła⁴⁸, C Kim¹⁵, T A Kinghorn²⁴, I Kisel⁴⁹, A Kisiel⁴⁸, M Kocan¹⁹, L Kochenda⁹, L K Kosarzewski¹⁹, L Kramarik¹⁹, P Kravtsov⁹, K Krueger⁵⁰, N Kulathunga Mudiyanselage¹⁷, L Kumar⁶, R Kunnawalkam Elayavalli³⁹, J H Kwasizur⁴⁷, R Lacey¹⁶, J M Landgraf¹, J Lauret¹, A Lebedev¹, R Lednicky⁵, J H Lee¹, C Li²⁸, W Li⁵¹, W Li²², X Li²⁸, Y Li¹², Y Liang¹³, R Licenik²⁰, T Lin¹⁰, A Lipiec⁴⁸, M A Lisa³, F Liu³³, H Liu⁴⁷, P Liu¹⁶, P Liu⁵¹, T Liu²³, X Liu³, Y Liu¹⁰, Z Liu²⁸, T Ljubicic¹, W J Llope³⁹, M Lomnitz³⁰, R S Longacre¹, S Luo⁴⁰, X Luo³³, G L Ma⁵¹, L Ma²⁷, R Ma¹, Y G Ma⁵¹, N Magdy⁴⁰, R Majka²³, D Mallick¹⁴, S Margetis¹³, C Markert⁵², H S Matis³⁰, O Matonoha¹⁹, J A Mazer⁵³, K Meehan²⁴, J C Mei²¹, N G Minaev³⁵, S Mioduszewski¹⁰, D Mishra¹⁴, B Mohanty¹⁴, M M Mondal¹⁴, I Mooney³⁹, Z Moravcova¹⁹, D A Morozov³⁵, Md Nasim⁵⁴, K Nayak³³, J M Nelson³¹, D B Nemes²³, M Nie²¹, G Nigmatkulov⁹, T Niida³⁹, L V Nogach³⁵, T Nonaka³³, G Odyniec³⁰, A Ogawa¹, S Oh²³, V A Okorokov⁹, B S Page¹, R Pak¹, Y Panebratsev⁵, B Pawlik², D Pawlowska⁴⁸, H Pei³³, C Perkins³¹, R L Pintér³², J Pluta⁴⁸, J Porter³⁰, M Posik⁵⁵, N K Pruthi⁶, M Przybycien², J Putschke³⁹, A Quintero⁵⁵, S K Radhakrishnan³⁰, S Ramachandran⁴, R L Ray⁵², R Reed⁴¹, H G Ritter³⁰, J B Roberts²², O V Rogachevskiy⁵, J L Romero²⁴, L Ruan¹, J Rusnak²⁰, O Rusnakova¹⁹, N R Sahoo²¹, P K Sahu⁵⁶, S Salur⁵³, J Sandweiss²³, J Schambach⁵², W B Schmidke¹, N Schmitz⁵⁷, B R Schweid¹⁶, F Seck⁴³, J Seger²⁹, M Sergeeva²⁵, R Seto¹⁵, P Seyboth⁵⁷, N Shah⁵⁸, E Shahaliev⁵, P V Shanmuganathan⁴¹, M Shao²⁸, F Shen²¹, W Q Shen⁵¹, S S Shi³³, Q Y Shou⁵¹, E P Sichtermann³⁰, S Siejka⁴⁸, R Sikora², M Simko²⁰, J Singh⁶, S Singha¹³, D Smirnov¹, N Smirnov²³, W Solyst⁴⁷, P Sorensen¹, H M Spinka⁵⁰, B Srivastava³⁸, T D S Stanislaus⁴⁴, M Stefaniak⁴⁸, D J Stewart²³, M Strikhanov⁹, B Stringfellow³⁸, A A P Suaide⁵⁹, T Sugiura¹¹, M Sumbera²⁰, B Summa³⁶, X M Sun³³, Y Sun²⁸, Y Sun⁶⁰, B Surrow⁵⁵, D N Svirida⁸, M A Szelezniak³⁰, P Szymanski⁴⁸, A H Tang¹, Z Tang²⁸, A Taranenko⁹, T Tarnowsky⁶¹, A Tawfik⁶², J H Thomas³⁰, A R Timmins¹⁷, D Tlusty²⁹, M Tokarev⁵, C A Tomkiel⁴¹, S Trentalange²⁵, R E Tribble¹⁰, P Tribedy¹, S K Tripathy³², O D Tsai²⁵, B Tu³³, Z Tu¹, T Ullrich¹, D G Underwood⁵⁰, I Upsal^{1

21}, G Van Buren¹, J Vanek²⁰, A N Vasiliev³⁵, I Vassiliev⁴⁹, F Videbæk¹, S Vokal⁵, S A Voloshin³⁹, F Wang³⁸, G Wang²⁵, P Wang²⁸, Y Wang³³, Y Wang¹², J C Webb¹, L Wen²⁵, G D Westfall⁶¹, H Wieman³⁰, S W Wissink⁴⁷, R Witt⁶³, Y Wu¹⁵, Z G Xiao¹², G Xie⁴⁰, W Xie³⁸, H Xu⁶⁰, N Xu³⁰, Q H Xu²¹, Y F Xu⁵¹, Z Xu¹, C Yang²¹, Q Yang²¹, S Yang¹, Y Yang²⁶, Z Yang³³, Z Ye²², Z Ye⁴⁰, L Yi²¹, K Yip¹, H Zbroszczyk⁴⁸, W Zha²⁸, D Zhang³³, L Zhang³³, S Zhang²⁸, S Zhang⁵¹, X P Zhang¹², Y Zhang²⁸, Z Zhang⁵¹, J Zhao³⁸, C Zhong⁵¹, C Zhou⁵¹, X Zhu¹², Z Zhu²¹, M Zurek³⁰, M Zyzak⁴⁹; STAR Collaboration

Affiliations

¹ Brookhaven National Laboratory, Upton, New York 11973.
² AGH University of Science and Technology, FPACS, Cracow 30-059, Poland.
³ Ohio State University, Columbus, Ohio 43210.
⁴ University of Kentucky, Lexington, Kentucky 40506-0055.
⁵ Joint Institute for Nuclear Research, Dubna 141 980, Russia.
⁶ Panjab University, Chandigarh 160014, India.
⁷ Variable Energy Cyclotron Centre, Kolkata 700064, India.
⁸ Alikhanov Institute for Theoretical and Experimental Physics, Moscow 117218, Russia.
⁹ National Research Nuclear University MEPhI, Moscow 115409, Russia.
¹⁰ Texas A&M University, College Station, Texas 77843.
¹¹ University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
¹² Tsinghua University, Beijing 100084.
¹³ Kent State University, Kent, Ohio 44242.
¹⁴ National Institute of Science Education and Research, HBNI, Jatni 752050, India.
¹⁵ University of California, Riverside, California 92521.
¹⁶ State University of New York, Stony Brook, New York 11794.
¹⁷ University of Houston, Houston, Texas 77204.
¹⁸ University of Jammu, Jammu 180001, India.
¹⁹ Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
²⁰ Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic.
²¹ Shandong University, Qingdao, Shandong 266237.
²² Rice University, Houston, Texas 77251.
²³ Yale University, New Haven, Connecticut 06520.
²⁴ University of California, Davis, California 95616.
²⁵ University of California, Los Angeles, California 90095.
²⁶ National Cheng Kung University, Tainan 70101.
²⁷ Fudan University, Shanghai 200433.
²⁸ University of Science and Technology of China, Hefei, Anhui 230026.
²⁹ Creighton University, Omaha, Nebraska 68178.
³⁰ Lawrence Berkeley National Laboratory, Berkeley, California 94720.
³¹ University of California, Berkeley, California 94720.
³² Eötvös Loránd University, Budapest H-1117, Hungary.
³³ Central China Normal University, Wuhan, Hubei 430079.
³⁴ University of Heidelberg, Heidelberg 69120, Germany.
³⁵ NRC "Kurchatov Institute", Institute of High Energy Physics, Protvino 142281, Russia.
³⁶ Pennsylvania State University, University Park, Pennsylvania 16802.
³⁷ Abilene Christian University, Abilene, Texas 79699.
³⁸ Purdue University, West Lafayette, Indiana 47907.
³⁹ Wayne State University, Detroit, Michigan 48201.
⁴⁰ University of Illinois at Chicago, Chicago, Illinois 60607.
⁴¹ Lehigh University, Bethlehem, Pennsylvania 18015.
⁴² Southern Connecticut State University, New Haven, Connecticut 06515.
⁴³ Technische Universität Darmstadt, Darmstadt 64289, Germany.
⁴⁴ Valparaiso University, Valparaiso, Indiana 46383.
⁴⁵ Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India.
⁴⁶ American University in Cairo, New Cairo 11835, Egypt.
⁴⁷ Indiana University, Bloomington, Indiana 47408.
⁴⁸ Warsaw University of Technology, Warsaw 00-661, Poland.
⁴⁹ Frankfurt Institute for Advanced Studies FIAS, Frankfurt 60438, Germany.
⁵⁰ Argonne National Laboratory, Argonne, Illinois 60439.
⁵¹ Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800.
⁵² University of Texas, Austin, Texas 78712.
⁵³ Rutgers University, Piscataway, New Jersey 08854.
⁵⁴ Indian Institute of Science Education and Research (IISER), Berhampur 760010, India.
⁵⁵ Temple University, Philadelphia, Pennsylvania 19122.
⁵⁶ Institute of Physics, Bhubaneswar 751005, India.
⁵⁷ Max-Planck-Institut für Physik, Munich 80805, Germany.
⁵⁸ Indian Institute Technology, Patna, Bihar 801103, India.
⁵⁹ Universidade de São Paulo, São Paulo, Brazil 05314-970.
⁶⁰ Huzhou University, Huzhou, Zhejiang 313000.
⁶¹ Michigan State University, East Lansing, Michigan 48824.
⁶² Nile University, ECPT, 12677 Giza, Egypt.
⁶³ United States Naval Academy, Annapolis, Maryland 21402.

PMID: 31702332
DOI: 10.1103/PhysRevLett.123.162301

Abstract

We report the first measurement of rapidity-odd directed flow (v_{1}) for D^{0} and D^{0}[over ¯] mesons at midrapidity (|y|<0.8) in Au+Au collisions at sqrt[s_{NN}]=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. In 10-80% Au+Au collisions, the slope of the v_{1} rapidity dependence (dv_{1}/dy), averaged over D^{0} and D^{0}[over ¯] mesons, is -0.080±0.017(stat)±0.016(syst) for transverse momentum p_{T} above 1.5 GeV/c. The absolute value of D^{0} meson dv_{1}/dy is about 25 times larger than that for charged kaons, with 3.4σ significance. These data give a unique insight into the initial tilt of the produced matter, and offer constraints on the geometric and transport parameters of the hot QCD medium created in relativistic heavy-ion collisions.