Probing Gluon Spin-Momentum Correlations in Transversely Polarized Protons through Midrapidity Isolated Direct Photons in $p^\uparrow+p$ Collisions at $\sqrt {s}$=200 GeV
- Acharya, U.A.
- Aidala, C.
- Akiba, Y.
- Alfred, M.
- Andrieux, V.
- Apadula, N.
- Asano, H.
- Azmoun, B.
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- Berdnikov, A.
- Berdnikov, Y.
- Blankenship, B.
- Blau, D.S.
- Bok, J.S.
- Brooks, M.L.
- Bryslawskyj, J.
- Bumazhnov, V.
- Campbell, S.
- Canoa Roman, V.
- Cervantes, R.
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- Chiu, M.
- Choi, I.J.
- Choi, J.B.
- Citron, Z.
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- Corrales Morales, Y.
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- Deshpande, A.
- Desmond, E.J.
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- Dixit, D.
- Do, J.H.
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- Drees, K.A.
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- Finger, M.
- M.Finger, Jr.
- Fitzgerald, D.
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- Frantz, J.E.
- Franz, A.
- Frawley, A.D.
- Fukuda, Y.
- Gal, C.
- Gallus, P.
- Garg, P.
- Ge, H.
- Giles, M.
- Giordano, F.
- Goto, Y.
- Grau, N.
- Greene, S.V.
- Grosse Perdekamp, M.
- Gunji, T.
- Guragain, H.
- Hachiya, T.
- Haggerty, J.S.
- Hahn, K.I.
- Hamagaki, H.
- Hamilton, H.F.
- Han, S.Y.
- Hanks, J.
- Hasegawa, S.
- Haseler, T.O.S.
- He, X.
- Hemmick, T.K.
- Hill, J.C.
- Hill, K.
- Hodges, A.
- Hollis, R.S.
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- Hoshino, T.
- Hotvedt, N.
- Huang, J.
- Huang, S.
- Imai, K.
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- Iordanova, A.
- Isenhower, D.
- Ivanishchev, D.
- Jacak, B.V.
- Jezghani, M.
- Ji, Z.
- Jiang, X.
- Johnson, B.M.
- Jouan, D.
- Jumper, D.S.
- Kang, J.H.
- Kapukchyan, D.
- Karthas, S.
- Kawall, D.
- Kazantsev, A.V.
- Khachatryan, V.
- Khanzadeev, A.
- Khatiwada, A.
- Kim, C.
- Kim, E.-J.
- Kim, M.
- Kincses, D.
- Kingan, A.
- Kistenev, E.
- Klatsky, J.
- Kline, P.
- Koblesky, T.
- Kotov, D.
- Kudo, S.
- Kurgyis, B.
- Kurita, K.
- Kwon, Y.
- Lajoie, J.G.
- Larionova, D.
- Larionova, M.
- Lebedev, A.
- Lee, S.H.
- Leitch, M.J.
- Leung, Y.H.
- Lewis, N.A.
- Li, X.
- Lim, S.H.
- Liu, M.X.
- Loggins, V.-R.
- Lökös, S.
- Lovasz, K.
- Lynch, D.
- Majoros, T.
- Makdisi, Y.I.
- Makek, M.
- Manko, V.I.
- Mannel, E.
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- Mcglinchey, D.
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- Mitchell, J.T.
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- Montuenga, P.
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- Niida, T.
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- Ogilvie, C.A.
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- Pantuev, V.
- Papavassiliou, V.
- Park, J.S.
- Park, S.
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- Patel, M.
- Peng, W.
- Perepelitsa, D.V.
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- Rowan, Z.
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- Safonov, A.S.
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- Schmoll, B.K.
- Sedgwick, K.
- Seidl, R.
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- Seto, R.
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- Silva, C.L.
- Silvermyr, D.
- Singh, B.K.
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- Singh, V.
- Slunečka, M.
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- Snowball, M.
- Soltz, R.A.
- Sondheim, W.E.
- Sorensen, S.P.
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- Stankus, P.W.
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- Sugitate, T.
- Sukhanov, A.
- Sumita, T.
- Sun, J.
- Sun, Z.
- Sziklai, J.
- Tanida, K.
- Tannenbaum, M.J.
- Tarafdar, S.
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- Tomášek, M.
- Towell, C.L.
- Towell, R.S.
- Tserruya, I.
- Ueda, Y.
- Ujvari, B.
- van Hecke, H.W.
- Velkovska, J.
- Virius, M.
- Vrba, V.
- Vukman, N.
- Wang, X.R.
- Watanabe, Y.S.
- Wong, C.P.
- Woody, C.L.
- Xu, C.
- Xu, Q.
- Xue, L.
- Yalcin, S.
- Yamaguchi, Y.L.
- Yamamoto, H.
- Yanovich, A.
- Yoo, J.H.
- Yoon, I.
- Yu, H.
- Yushmanov, I.E.
- Zajc, W.A.
- Zelenski, A.
- Zharko, S.
- Zou, L.
DOIAbstract
International audienceStudying spin-momentum correlations in hadronic collisions offers a glimpse into a three-dimensional picture of proton structure. The transverse single-spin asymmetry for midrapidity isolated direct photons in p↑+p collisions at s=200 GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC). Because direct photons in particular are produced from the hard scattering and do not interact via the strong force, this measurement is a clean probe of initial-state spin-momentum correlations inside the proton and is in particular sensitive to gluon interference effects within the proton. This is the first time direct photons have been used as a probe of spin-momentum correlations at RHIC. The unce...
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