Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3072479 31 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We report measurements of the photon beam asymmetry Σ for the reactions γ - p→pπ0 and γ - p→pη from the GlueX experiment using a 9 GeV linearly polarized, tagged photon beam incident on a liquid hydrogen target in Jefferson Lab's Hall D. The asymmetries, measured as a function of the proton momentum transfer, possess greater precision than previous π0 measurements and are the first η measurements in this energy regime. The results are compared with theoretical predictions based on t-channel, quasiparticle exchange and constrain the axial-vector component of the neutral meson production mechanism in these models. © 2017 American Physical Society.
Έτος δημοσίευσης:
2017
Συγγραφείς:
Al Ghoul, H.
Anassontzis, E.G.
Austregesilo, A.
Barbosa, F.
Barnes, A.
Beattie, T.D.
Bennett, D.W.
Berdnikov, V.V.
Black, T.
Boeglin, W.
Briscoe, W.J.
Brooks, W.K.
Cannon, B.E.
Chernyshov, O.
Chudakov, E.
Crede, V.
Dalton, M.M.
Deur, A.
Dobbs, S.
Dolgolenko, A.
Dugger, M.
Dzhygadlo, R.
Egiyan, H.
Eugenio, P.
Fanelli, C.
Foda, A.M.
Frye, J.
Furletov, S.
Gan, L.
Gasparian, A.
Gerasimov, A.
Gevorgyan, N.
Goetzen, K.
Goryachev, V.S.
Guo, L.
Hakobyan, H.
Hardin, J.
Henderson, A.
Huber, G.M.
Ireland, D.G.
Ito, M.M.
Jarvis, N.S.
Jones, R.T.
Kakoyan, V.
Kamel, M.
Klein, F.J.
Kliemt, R.
Kourkoumeli, C.
Kuleshov, S.
Kuznetsov, I.
Lara, M.
Larin, I.
Lawrence, D.
Levine, W.I.
Livingston, K.
Lolos, G.J.
Lyubovitskij, V.
Mack, D.
Mattione, P.T.
Matveev, V.
McCaughan, M.
McCracken, M.
McGinley, W.
McIntyre, J.
Mendez, R.
Meyer, C.A.
Miskimen, R.
Mitchell, R.E.
Mokaya, F.
Moriya, K.
Nerling, F.
Nigmatkulov, G.
Ochoa, N.
Ostrovidov, A.I.
Papandreou, Z.
Patsyuk, M.
Pedroni, R.
Pennington, M.R.
Pentchev, L.
Peters, K.J.
Pooser, E.
Pratt, B.
Qiang, Y.
Reinhold, J.
Ritchie, B.G.
Robison, L.
Romanov, D.
Salgado, C.
Schumacher, R.A.
Schwarz, C.
Schwiening, J.
Semenov, A.Y.
Semenova, I.A.
Seth, K.K.
Shepherd, M.R.
Smith, E.S.
Sober, D.I.
Somov, A.
Somov, S.
Soto, O.
Sparks, N.
Staib, M.J.
Stevens, J.R.
Strakovsky, I.I.
Subedi, A.
Tarasov, V.
Taylor, S.
Teymurazyan, A.
Tolstukhin, I.
Tomaradze, A.
Toro, A.
Tsaris, A.
Vasileiadis, G.
Vega, I.
Walford, N.K.
Werthmüller, D.
Whitlatch, T.
Williams, M.
Wolin, E.
Xiao, T.
Zarling, J.
Zhang, Z.
Zihlmann, B.
Mathieu, V.
Nys, J.
GlueX Collaboration
Περιοδικό:
Physical Review C
Εκδότης:
American Physical Society
Τόμος:
95
Αριθμός / τεύχος:
4
Επίσημο URL (Εκδότης):
DOI:
10.1103/PhysRevC.95.042201
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