Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV
Creators: name: Acharya, U. A.
name: Adare, A.
name: Aidala, C.
name: Ajitanand, N. N.
name: Akiba, Y.
name: Akimoto, R.
name: Alfred, M.
name: Apadula, N.
name: Aramaki, Y.
name: Asano, H.
name: Atomssa, E. T.
name: Awes, T. C.
name: Azmoun, B.
name: Babintsev, V.
name: Bai, M.
name: Bandara, N. S.
name: Bannier, B.
name: Barish, K. N.
name: Bathe, S.
name: Bazilevsky, A.
name: Beaumier, M.
name: Beckman, S.
name: Belmont, R.
name: Berdnikov, A.
name: Berdnikov, Y.
name: Black, D.
name: Bok, J. S.
name: Boyle, K.
name: Brooks, M. L.
name: Bryslawskyj, J.
name: Buesching, H.
name: Bumazhnov, V.
name: Campbell, S.
name: Roman, V. Canoa
name: Chen, C. -H.
name: Chi, C. Y.
name: Chiu, M.
name: Choi, I. J.
name: Choi, J. B.
name: Chujo, T.
name: Citron, Z.
name: Connors, M.
name: Csanád, M.
name: Csörgő, T.
name: Danley, T. W.
name: Datta, A.
name: Daugherity, M. S.
name: David, G.
name: DeBlasio, K.
name: Dehmelt, K.
name: Denisov, A.
name: Deshpande, A.
name: Desmond, E. J.
name: Ding, L.
name: Dion, A.
name: Do, J. H.
name: Drees, A.
name: Drees, K. A.
name: Durham, J. M.
name: Durum, A.
name: Enokizono, A.
name: En'yo, H.
name: Esha, R.
name: Esumi, S.
name: Fadem, B.
name: Fan, W.
name: Feege, N.
name: Fields, D. E.
name: Finger, M.
name: Finger,, M.
name: Fitzgerald, D.
name: Fokin, S. L.
name: Frantz, J. E.
name: Franz, A.
name: Frawley, A. D.
name: Gal, C.
name: Gallus, P.
name: Gamez, E. A.
name: Garg, P.
name: Ge, H.
name: Giordano, F.
name: Glenn, A.
name: Goto, Y.
name: Grau, N.
name: Greene, S. V.
name: Perdekamp, M. Grosse
name: Gu, Y.
name: Gunji, T.
name: Guragain, H.
name: Hachiya, T.
name: Haggerty, J. S.
name: Hahn, K. I.
name: Hamagaki, H.
name: Han, S. Y.
name: Hanks, J.
name: Hasegawa, S.
name: Haseler, T. O. S.
name: He, X.
name: Hemmick, T. K.
name: Hill, J. C.
name: Hill, K.
name: Hodges, A.
name: Hollis, R. S.
name: Homma, K.
name: Hong, B.
name: Hoshino, T.
name: Huang, J.
name: Huang, S.
name: Ikeda, Y.
name: Imai, K.
name: Imazu, Y.
name: Inaba, M.
name: Iordanova, A.
name: Isenhower, D.
name: Ishimaru, S.
name: Ivanishchev, D.
name: Jacak, B. V.
name: Jeon, S. J.
name: Jezghani, M.
name: Ji, Z.
name: Jia, J.
name: Jiang, X.
name: Johnson, B. M.
name: Joo, E.
name: Joo, K. S.
name: Jouan, D.
name: Jumper, D. S.
name: Kang, J. H.
name: Kang, J. S.
name: Kawall, D.
name: Kazantsev, A. V.
name: Key, J. A.
name: Khachatryan, V.
name: Khanzadeev, A.
name: Khatiwada, A.
name: Kihara, K.
name: Kim, C.
name: Kim, D. H.
name: Kim, D. J.
name: Kim, E. -J.
name: Kim, H. -J.
name: Kim, M.
name: Kim, Y. K.
name: Kincses, D.
name: Kistenev, E.
name: Klatsky, J.
name: Kleinjan, D.
name: Kline, P.
name: Koblesky, T.
name: Kofarago, M.
name: Koster, J.
name: Kotov, D.
name: Kurgyis, B.
name: Kurita, K.
name: Kurosawa, M.
name: Kwon, Y.
name: Lacey, R.
name: Lajoie, J. G.
name: Lebedev, A.
name: Lee, K. B.
name: Lee, S. H.
name: Leitch, M. J.
name: Leitgab, M.
name: Leung, Y. H.
name: Lewis, N. A.
name: Li, X.
name: Lim, S. H.
name: Liu, M. X.
name: Lökös, S.
name: Lynch, D.
name: Majoros, T.
name: Makdisi, Y. I.
name: Makek, M.
name: Manion, A.
name: Manko, V. I.
name: Mannel, E.
name: McCumber, M.
name: McGaughey, P. L.
name: McGlinchey, D.
name: McKinney, C.
name: Meles, A.
name: Mendoza, M.
name: Meredith, B.
name: Metzger, W. J.
name: Miake, Y.
name: Mignerey, A. C.
name: Miller, A. J.
name: Milov, A.
name: Mishra, D. K.
name: Mitchell, J. T.
name: Mitrankov, Iu.
name: Mitsuka, G.
name: Miyasaka, S.
name: Mizuno, S.
name: Montuenga, P.
name: Moon, T.
name: Morrison, D. P.
name: Morrow, S. I.
name: Moukhanova, T. V.
name: Mulilo, B.
name: Murakami, T.
name: Murata, J.
name: Mwai, A.
name: Nagamiya, S.
name: Nagashima, K.
name: Nagle, J. L.
name: Nagy, M. I.
name: Nakagawa, I.
name: Nakagomi, H.
name: Nakano, K.
name: Nattrass, C.
name: Nelson, S.
name: Netrakanti, P. K.
name: Nihashi, M.
name: Niida, T.
name: Nishitani, R.
name: Nouicer, R.
name: Novák, T.
name: Novitzky, N.
name: Nyanin, A. S.
name: O'Brien, E.
name: Ogilvie, C. A.
name: Koop, J. D. Orjuela
name: Osborn, J. D.
name: Oskarsson, A.
name: Ozawa, K.
name: Pak, R.
name: Pantuev, V.
name: Papavassiliou, V.
name: Park, S.
name: Pate, S. F.
name: Patel, L.
name: Patel, M.
name: Peng, J. -C.
name: Peng, W.
name: Perepelitsa, D. V.
name: Perera, G. D. N.
name: Peressounko, D. Yu.
name: PerezLara, C. E.
name: Perry, J.
name: Petti, R.
name: Pinkenburg, C.
name: Pinson, R.
name: Pisani, R. P.
name: Pun, A.
name: Purschke, M. L.
name: Radzevich, P. V.
name: Rak, J.
name: Ramasubramanian, N.
name: Ravinovich, I.
name: Read, K. F.
name: Reynolds, D.
name: Riabov, V.
name: Riabov, Y.
name: Richford, D.
name: Rinn, T.
name: Riveli, N.
name: Roach, D.
name: Rolnick, S. D.
name: Rosati, M.
name: Rowan, Z.
name: Rubin, J. G.
name: Runchey, J.
name: Saito, N.
name: Sakaguchi, T.
name: Sako, H.
name: Samsonov, V.
name: Sarsour, M.
name: Sato, S.
name: Sawada, S.
name: Scarlett, C. Y.
name: Schaefer, B.
name: Schmoll, B. K.
name: Sedgwick, K.
name: Seele, J.
name: Seidl, R.
name: Sen, A.
name: Seto, R.
name: Sett, P.
name: Sexton, A.
name: Sharma, D.
name: Shein, I.
name: Shibata, T. -A.
name: Shigaki, K.
name: Shimomura, M.
name: Shukla, P.
name: Sickles, A.
name: Silva, C. L.
name: Silvermyr, D.
name: Singh, B. K.
name: Singh, C. P.
name: Singh, V.
name: Slunečka, M.
name: Smith, K. L.
name: Soltz, R. A.
name: Sondheim, W. E.
name: Sorensen, S. P.
name: Sourikova, I. V.
name: Stankus, P. W.
name: Stepanov, M.
name: Stoll, S. P.
name: Sugitate, T.
name: Sukhanov, A.
name: Sumita, T.
name: Sun, J.
name: Sun, X.
name: Sun, Z.
name: Suzuki, S.
name: Sziklai, J.
name: Takahara, A.
name: Taketani, A.
name: Tanida, K.
name: Tannenbaum, M. J.
name: Tarafdar, S.
name: Taranenko, A.
name: Tieulent, R.
name: Timilsina, A.
name: Todoroki, T.
name: Tomášek, M.
name: Torii, H.
name: Towell, M.
name: Towell, R.
name: Towell, R. S.
name: Tserruya, I.
name: Ueda, Y.
name: Ujvari, B.
name: van Hecke, H. W.
name: Vargyas, M.
name: Velkovska, J.
name: Virius, M.
name: Vrba, V.
name: Vznuzdaev, E.
name: Wang, X. R.
name: Wang, Z.
name: Watanabe, D.
name: Watanabe, Y.
name: Watanabe, Y. S.
name: Wei, F.
name: Whitaker, S.
name: Wolin, S.
name: Wong, C. P.
name: Woody, C. L.
name: Wu, Y.
name: Wysocki, M.
name: Xia, B.
name: Xu, Q.
name: Xue, L.
name: Yalcin, S.
name: Yamaguchi, Y. L.
name: Yanovich, A.
name: Yoo, J. H.
name: Yoon, I.
name: Younus, I.
name: Yu, H.
name: Yushmanov, I. E.
name: Zajc, W. A.
name: Zelenski, A.
name: Zhai, Y.
name: Zharko, S.
name: Zou, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the longitudinal double spin asymmetries, $A_{LL}$, for charged pions at midrapidity ($|η|&lt;0.35$) in longitudinally polarized $p$$+$$p$ collisions at $\sqrt{s}=510$ 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 $\sqrt{s}=200$ GeV, which show a nonzero positive contribution of gluon spin to the proton spin.
description: 360 authors, 8 pages, 6 figures, 1 table, 2013 data. v2 is version accepted for publication in Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html