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Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized p plus p collisions at root s=510 GeV

Authors
Acharya, U.Adare, A.Aidala, C.Ajitanand, N. N.Akiba, Y.Akimoto, R.Alfred, M.Apadula, N.Aramaki, Y.Asano, H.Atomssa, E. T.Awes, T. C.Azmoun, B.Babintsev, VBai, M.Bandara, N. S.Bannier, B.Barish, K. N.Bathe, S.Bazilevsky, A.Beaumier, M.Beckman, S.Belmont, R.Berdnikov, A.Berdnikov, Y.Black, D.Bok, J. S.Boyle, K.Brooks, M. L.Bryslawskyj, J.Buesching, H.Bumazhnov, VCampbell, S.Roman, V. CanoaChen, C-HChi, C. Y.Chiu, M.Choi, I. J.Choi, J. B.Chujo, T.Citron, Z.Connors, M.Csanad, M.Csorgo, T.Danley, T. W.Datta, A.Daugherity, M. S.David, G.DeBlasio, K.Dehmelt, K.Denisov, A.Deshpande, A.Desmond, E. J.Ding, L.Dion, A.Do, J. H.Drees, A.Drees, K. A.Durham, J. M.Durum, A.Enokizono, A.En'yo, H.Esha, R.Esumi, S.Fadem, B.Fan, W.Feege, N.Fields, D. E.Finger, M.Finger Jr, M.Fitzgerald, D.Fokin, S. L.Frantz, J. E.Franz, A.Frawley, A. D.Gal, C.Gallus, P.Gamez, E. A.Garg, P.Ge, H.Giordano, F.Glenn, A.Goto, Y.Grau, N.Greene, SvPerdekamp, M. GrosseGu, Y.Gunji, T.Guragain, H.Hachiya, T.Haggerty, J. S.Hahn, K., IHamagaki, H.Han, S. Y.Hanks, J.Hasegawa, S.Haseler, TosHe, X.Hemmick, T. K.Hill, J. C.Hill, K.Hodges, A.Hollis, R. S.Homma, K.Hong, B.Hoshino, T.Huang, J.Huang, S.Ikeda, Y.Imai, K.Imazu, Y.Inaba, M.Iordanova, A.Isenhower, D.Ishimaru, S.Ivanishchev, D.Jacak, B., VJeon, S. J.Jezghani, M.Ji, Z.Jia, J.Jiang, X.Johnson, B. M.Joo, E.Joo, K. S.Jouan, D.Jumper, D. S.Kang, J. H.Kang, J. S.Kawall, D.Kazantsev, A., VKey, J. A.Khachatryan, VKhanzadeev, A.Khatiwada, A.Kihara, K.Kim, C.Kim, D. H.Kim, D. J.Kim, E-JKim, H-JKim, M.Kim, Y. K.Kincses, D.Kistenev, E.Klatsky, J.Kleinjan, D.Kline, P.Koblesky, T.Kofarago, M.Koster, J.Kotov, D.Kurgyis, B.Kurita, K.Kurosawa, M.Kwon, Y.Lacey, R.Lajoie, J. G.Lebedev, A.Lee, K. B.Lee, S. H.Leitch, M. J.Leitgab, M.Leung, Y. H.Lewis, N. A.Li, X.Lim, S. H.Liu, M. X.Lokos, S.Lynch, D.Majoros, T.Makdisi, Y., IMakek, M.Manion, A.Manko, V., IMannel, E.McCumber, M.McGaughey, P. L.McGlinchey, D.McKinney, C.Meles, A.Mendoza, M.Meredith, B.Metzger, W. J.Miake, Y.Mignerey, A. C.Miller, A. J.Milov, A.Mishra, D. K.Mitchell, J. T.Mitrankov, I. U.Mitsuka, G.Miyasaka, S.Mizuno, S.Montuenga, P.Moon, T.Morrison, D. P.Morrow, S., IMoukhanova, T., VMulilo, B.Murakami, T.Murata, J.Mwai, A.Nagamiya, S.Nagashima, K.Nagle, J. L.Nagy, M., INakagawa, INakagomi, H.Nakano, K.Nattrass, C.Nelson, S.Netrakanti, P. K.Nihashi, M.Niida, T.Nishitani, R.Nouicer, R.Novak, T.Novitzky, N.Nyanin, A. S.O'Brien, E.Ogilvie, C. A.Koop, J. D. OrjuelaOsborn, J. D.Oskarsson, A.Ozawa, K.Pak, R.Pantuev, VPapavassiliou, VPark, S.Pate, S. F.Patel, L.Patel, M.Peng, J-CPeng, W.Perepelitsa, D., VPerera, G. D. N.Peressounko, D. YuPerezLara, C. E.Perry, J.Petti, R.Pinkenburg, C.Pinson, R.Pisani, R. P.Potekhin, M.Pun, A.Purschke, M. L.Radzevich, P., VRak, J.Ramasubramanian, N.Ravinovich, IRead, K. F.Reynolds, D.Riabov, VRiabov, Y.Richford, D.Rinn, T.Riveli, N.Roach, D.Rolnick, S. D.Rosati, M.Rowan, Z.Rubin, J. G.Runchey, J.Saito, N.Sakaguchi, T.Sako, H.Samsonov, VSarsour, M.Sato, S.Sawada, S.Scarlett, C. Y.Schaefer, B.Schmoll, B. K.Sedgwick, K.Seele, J.Seidl, R.Sen, A.Seto, R.Sett, P.Sexton, A.Sharma, D.Shein, IShibata, T-AShigaki, K.Shimomura, M.Shukla, P.Sickles, A.Silva, C. L.Silvermyr, D.Singh, B. K.Singh, C. P.Singh, VSlunecka, M.Smith, K. L.Soltz, R. A.Sondheim, W. E.Sorensen, S. P.Sourikova, I., VStankus, P. W.Stepanov, M.Stoll, S. P.Sugitate, T.Sukhanov, A.Sumita, T.Sun, J.Sun, X.Sun, Z.Suzuki, S.Sziklai, J.Takahara, A.Taketani, A.Tanida, K.Tannenbaum, M. J.Tarafdar, S.Taranenko, A.Tieulent, R.Timilsina, A.Todoroki, T.Tomasek, M.Torii, H.Towell, M.Towell, R.Towell, R. S.Tserruya, IUeda, Y.Ujvari, B.van Hecke, H. W.Vargyas, M.Velkovska, J.Virius, M.Vrba, V.Vznuzdaev, E.Wang, X. R.Wang, Z.Watanabe, D.Watanabe, Y.Watanabe, Y. S.Wei, F.Whitaker, S.Wolin, S.Wong, C. P.Woody, C. L.Wu, Y.Wysocki, M.Xia, B.Xu, Q.Xue, L.Yalcin, S.Yamaguchi, Y. L.Yanovich, A.Yoo, J. H.Yoon, IYounus, IYu, H.Yushmanov, I. E.Zajc, W. A.Zelenski, A.Zhai, Y.Zharko, S.Zou, L.
Issue Date
5-8월-2020
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.102, no.3
Indexed
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
102
Number
3
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/53798
DOI
10.1103/PhysRevD.102.032001
ISSN
1550-7998
Abstract
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the longitudinal double spin asymmetries, A(LL), for charged pions at midrapidity (vertical bar eta vertical bar < 0.35) in longitudinally polarized p + p collisions at root s. = 510 GeV. These measurements are sensitive to the gluon spin contribution to the total spin of the proton in the parton momentum fraction x range between 0.04 and 0.09. One can infer the sign of the gluon polarization from the ordering of pion asymmetries with charge alone. The asymmetries are found to be consistent with global quantum-chromodynamics fits of deep-inelastic scattering and data at root s = 200 GeV, which show a nonzero positive contribution of gluon spin to the proton spin.
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