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    Beam-energy dependence of identified two-particle angular correlations ins root s(NN)=7.7-200 GeV Au + Au collisions

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    Genre
    Pre-print
    Date
    2020-01-30
    Author
    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
    Bassill, AJ
    Behera, A
    Bellwied, R
    Bhasin, A
    Bielcik, J
    Bielcikova, J
    Bland, LC
    Bordyuzhin, IG
    Brandenburg, JD
    Brandin, AV
    Butterworth, J
    Caines, H
    Sanchez, M Calderon de la Barca
    Cebra, D
    Chakaberia, I
    Chaloupka, P
    Chan, BK
    Chang, F-H
    Chang, Z
    Chankova-Bunzarova, N
    Chatterjee, A
    Chen, D
    Chen, JH
    Chen, X
    Cheng, J
    Cherney, M
    Chevalier, M
    Choudhury, S
    Christie, W
    Crawford, HJ
    Csanad, M
    Das, S
    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
    Herrmann, N
    Hoffman, E
    Holub, L
    Hong, Y
    Horvat, S
    Hu, Y
    Huang, B
    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
    Kikola, DP
    Kim, C
    Kincses, D
    Kinghorn, TA
    Kisel, I
    Kiselev, A
    Kisiel, A
    Kocan, M
    Kochenda, L
    Kosarzewski, LK
    Kramarik, L
    Kravtsov, P
    Krueger, K
    Mudiyanselage, N Kulathunga
    Kumar, L
    Elayavalli, R Kunnawalkam
    Kwasizur, JH
    Lacey, R
    Lan, S
    Landgraf, JM
    Lauret, J
    Lebedev, A
    Lednicky, R
    Lee, JH
    Leung, YH
    Li, C
    Li, W
    Li, X
    Li, Y
    Liang, Y
    Licenik, R
    Lin, T
    Lin, Y
    Lisa, MA
    Liu, F
    Liu, H
    Liu, P
    Liu, T
    Liu, X
    Liu, Y
    Liu, Z
    Ljubicic, T
    Llope, WJ
    Lomnitz, M
    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
    Matonoha, O
    Mazer, JA
    Meehan, K
    Mei, JC
    Minaev, NG
    Mioduszewski, S
    Mohanty, B
    Mondal, MM
    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
    Pinter, 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
    Rusnakova, O
    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
    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
    Videbaek, F
    Vokal, S
    Voloshin, SA
    Wang, F
    Wang, G
    Wang, JS
    Wang, P
    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
    Yang, C
    Yang, Q
    Yang, S
    Yang, Y
    Yang, Z
    Ye, Z
    Yi, L
    Yip, K
    Zbroszczyk, H
    Zha, W
    Zhang, D
    Zhang, S
    Zhang, XP
    Zhang, Y
    Zhang, ZJ
    Zhang, Z
    Zhao, J
    Zhong, C
    Zhou, C
    Zhu, X
    Zhu, Z
    Zurek, M
    Zyzak, M
    Collaboration, STAR
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    nucl-ex
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/4505
    
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    DOI
    10.1103/PhysRevC.101.014916
    Abstract
    The two-particle angular correlation functions, $R_2$, of pions, kaons, and protons in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV were measured by the STAR experiment at RHIC. These correlations were measured for both like-sign and unlike-sign charge combinations and versus the centrality. The correlations of pions and kaons show the expected near-side ({\it i.e.}, at small relative angles) peak resulting from short-range mechanisms. The amplitudes of these short-range correlations decrease with increasing beam energy. However, the proton correlation functions exhibit strong anticorrelations in the near-side region. This behavior is observed for the first time in an A+A collision system. The observed anticorrelation is $p_{T}$-independent and decreases with increasing beam energy and centrality. The experimental results are also compared to the Monte Carlo models UrQMD, Hijing, and AMPT.
    Citation to related work
    American Physical Society (APS)
    Has part
    PHYSICAL REVIEW C
    ADA compliance
    For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/4487
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      Improved measurement of the longitudinal spin transfer to Λ and Λ¯ hyperons in polarized proton-proton collisions at s=200  GeV

      Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderón De La Barca Sánchez, M; Cebra, D; Cendejas, R; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, F-H; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Csanad, M; Das, S; Dedovich, TG; Deng, J; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A; Grosnick, D; Gunarathne, DS; Guo, Y; Gupta, A; Guryn, W; Hamad, AI; Hamed, A; Harlenderova, A; Harris, JW; He, L; Heppelmann, S; Heppelmann, S; Herrmann, N; Hirsch, A; Holub, L; Hong, Y; Horvat, S; Huang, B; Huang, HZ; Huang, SL; Huang, T; Huang, X; Humanic, TJ; Huo, P; Igo, G; Jacobs, WW; Jentsch, A; Jia, J; Jiang, K; Jowzaee, S; Ju, X; Judd, EG; Kabana, S; Kagamaster, S; Kalinkin, D; Kang, K; Kapukchyan, D; Kauder, K; Ke, HW; Keane, D; Kechechyan, A; Kikoła, DP; Kim, C; Kinghorn, TA; Kisel, I; Kisiel, A; Kochenda, L; Kosarzewski, LK; Kraishan, AF; Kramarik, L; Krauth, L; Kravtsov, P; Krueger, K; Kulathunga, N; Kumar, L; Kunnawalkam Elayavalli, R; Kvapil, J; Kwasizur, JH; Lacey, R; Landgraf, JM; Lauret, J; Lebedev, A; Lednicky, R; Lee, JH; Li, C; Li, W; Li, X; Li, Y; Liang, Y; Lidrych, J; Lin, T; Lipiec, A; Lisa, MA; Liu, F; Liu, H; Liu, P; Liu, P; Liu, Y; Liu, Z; Ljubicic, T; Llope, WJ; Lomnitz, M; Longacre, RS; Luo, S; Luo, X; Ma, GL; Ma, L; Ma, R; Ma, YG; Magdy, N; Majka, R; Mallick, D; Margetis, S; Markert, C; Matis, HS; Matonoha, O; Mazer, JA; Meehan, K; Mei, JC; Minaev, NG; Mioduszewski, S; Mishra, D; Mohanty, B; Mondal, MM; Mooney, I; Morozov, DA; Nasim, Md; Negrete, JD; Nelson, JM; Nemes, DB; Nie, M; Nigmatkulov, G; Niida, T; Nogach, LV; Nonaka, T; Odyniec, G; Ogawa, A; Oh, K; Oh, S; Okorokov, VA; Olvitt, D; Page, BS; Pak, R; Panebratsev, Y; Pawlik, B; Pei, H; Perkins, C; Pinter, RL; Pluta, J; Porter, J; Posik, M; Pruthi, NK; Przybycien, M; Putschke, J; Quintero, A; Radhakrishnan, SK; Ramachandran, S; Ray, RL; Reed, R; Ritter, HG; Roberts, JB; Rogachevskiy, OV; Romero, JL; Ruan, L; Rusnak, J; Rusnakova, O; Sahoo, NR; Sahu, PK; Salur, S; Sandweiss, J; Schambach, J; Schmah, AM; 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; Siejka, S; Sikora, R; Simko, M; Singh, J; Singha, S; Smirnov, D; Smirnov, N; Solyst, W; Sorensen, P; Spinka, HM; Srivastava, B; Stanislaus, TDS; Stewart, DJ; Strikhanov, M; Stringfellow, B; Suaide, AAP; Sugiura, T; Sumbera, M; Summa, B; Sun, XM; Sun, X; Sun, Y; Surrow, B; Svirida, DN; Szymanski, P; Tang, AH; Tang, Z; Taranenko, A; Tarnowsky, T; Thomas, JH; Timmins, AR; Tlusty, D; Todoroki, T; Tokarev, M; Tomkiel, CA; Trentalange, S; Tribble, RE; Tribedy, P; Tripathy, SK; Tsai, OD; Tu, B; Ullrich, T; Underwood, DG; Upsal, I; Van Buren, G; Vanek, J; Vasiliev, AN; Vassiliev, I; Videbæk, F; Vokal, S; Voloshin, SA; Vossen, A; Wang, F; Wang, G; Wang, P; Wang, Y; Wang, Y; Webb, JC; Wen, L; Westfall, GD; Wieman, H; Wissink, SW; Witt, R; Wu, Y; Xiao, ZG; Xie, G; Xie, W; Xu, J; Xu, N; Xu, QH; Xu, YF; Xu, Z; Yang, C; Yang, Q; Yang, S; Yang, Y; Ye, Z; Ye, Z; Yi, L; Yip, K; Yoo, I-K; Yu, N; Zbroszczyk, H; Zha, W; Zhang, J; Zhang, J; Zhang, L; Zhang, S; Zhang, S; Zhang, XP; Zhang, Y; Zhang, Z; Zhao, J; Zhong, C; Zhou, C; Zhu, X; Zhu, Z; Zyzak, M (2018-12-01)
      The longitudinal spin transfer $D_{LL}$ to $\Lambda$ and $\bar{\Lambda}$ hyperons produced in high-energy polarized proton--proton collisions is expected to be sensitive to the helicity distribution functions of strange quarks and anti-quarks of the proton, and to longitudinally polarized fragmentation functions. We report an improved measurement of $D_{LL}$ from data obtained at a center-of-mass energy of $\sqrt{s}$ = 200 GeV with the STAR detector at RHIC. The data have an approximately twelve times larger figure-of-merit than prior results and cover $|\eta|<$ 1.2 in pseudo-rapidity with transverse momenta $p_T$ up to 6 GeV/c. In the forward scattering hemisphere at largest $p_T$, the longitudinal spin transfer is found to be $D_{LL}$ = -0.036 $\pm$ 0.048 (stat) $\pm$ 0.013(sys) for $\Lambda$ hyperons and $D_{LL}$ = 0.032 $\pm$ 0.043\,(stat) $\pm$ 0.013\,(sys) for $\bar{\Lambda}$ anti-hyperons. The dependences on $\eta$ and $p_T$ are presented and compared with model evaluations.
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