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

  • Acharya, U.
  • Adare, A.
  • Aidala, C.
  • Ajitanand, N. N.
  • Akiba, Y.
  • ... Kim, Yong Kyun
  • 외 355명
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18

초록

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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제목
Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized p plus p collisions at root s=510 GeV
저자
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, Yong KyunKincses, 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.
DOI
10.1103/PhysRevD.102.032001
발행일
2020-08
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
102
3
페이지
1 ~ 9

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