Measurement of the photon beam asymmetry in γ - p→K+ ς0 at Eγ=8.5 GeV

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3071874 52 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
Measurement of the photon beam asymmetry in γ - p→K+ ς0 at Eγ=8.5 GeV
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We report measurements of the photon beam asymmetry ς for the reaction γ - p→K+ς0(1193) using the GlueX spectrometer in Hall D at Jefferson Lab. Data were collected by using a linearly polarized photon beam in the energy range of 8.2-8.8 GeV incident on a liquid hydrogen target. The beam asymmetry ς was measured as a function of the Mandelstam variable t, and a single value of ς was extracted for events produced in the u channel. These are the first exclusive measurements of the photon beam asymmetry ς for the reaction in this energy range. For the t channel, the measured beam asymmetry is close to unity over the t range studied, -t=(0.1-1.4)(GeV/c)2, with an average value of ς=1.00±0.05. This agrees with theoretical models that describe the reaction via the natural-parity exchange of the K∗(892) Regge trajectory. A value of ς=0.41±0.09 is obtained for the u channel integrated up to -u=2.0 (GeV/c)2. © 2020 American Physical Society.
Έτος δημοσίευσης:
2020
Συγγραφείς:
Adhikari, S.
Ali, A.
Amaryan, M.
Austregesilo, A.
Barbosa, F.
Barlow, J.
Barriga, E.
Barsotti, R.
Beattie, T.D.
Berdnikov, V.V.
Black, T.
Boeglin, W.
Briscoe, W.J.
Britton, T.
Brooks, W.K.
Cannon, B.E.
Cao, N.
Chudakov, E.
Cole, S.
Cortes, O.
Crede, V.
Dalton, M.M.
Daniels, T.
Deur, A.
Dobbs, S.
Dolgolenko, A.
Dotel, R.
Dugger, M.
Dzhygadlo, R.
Egiyan, H.
Erbora, T.
Ernst, A.
Eugenio, P.
Fanelli, C.
Fegan, S.
Foda, A.M.
Foote, J.
Frye, J.
Furletov, S.
Gan, L.
Gasparian, A.
Gleason, C.
Goetzen, K.
Goncalves, A.
Goryachev, V.S.
Guo, L.
Hakobyan, H.
Hamdi, A.
Huber, G.M.
Hurley, A.
Ireland, D.G.
Ito, M.M.
Jarvis, N.S.
Jones, R.T.
Kakoyan, V.
Kalicy, G.
Kamel, M.
Kourkoumelis, C.
Kuleshov, S.
Larin, I.
Lawrence, D.
Lersch, D.I.
Li, H.
Li, W.
Liu, B.
Livingston, K.
Lolos, G.J.
Lyubovitskij, V.
Mack, D.
Marukyan, H.
Matveev, V.
Mccaughan, M.
Mccracken, M.
Mcginley, W.
Meyer, C.A.
Miskimen, R.
Mitchell, R.E.
Nerling, F.
Ng, L.
Ni, H.
Ostrovidov, A.I.
Papandreou, Z.
Patsyuk, M.
Paudel, C.
Pauli, P.
Pedroni, R.
Pentchev, L.
Peters, K.J.
Phelps, W.
Pooser, E.
Qin, N.
Reinhold, J.
Ritchie, B.G.
Robison, L.
Romanov, D.
Romero, C.
Salgado, C.
Schertz, A.M.
Schumacher, R.A.
Schwiening, J.
Seth, K.K.
Shen, X.
Shepherd, M.R.
Smith, E.S.
Sober, D.I.
Somov, A.
Somov, S.
Soto, O.
Stevens, J.R.
Strakovsky, I.I.
Suresh, K.
Tarasov, V.V.
Taylor, S.
Teymurazyan, A.
Thiel, A.
Vasileiadis, G.
Whitlatch, T.
Wickramaarachchi, N.
Williams, M.
Xiao, T.
Yang, Y.
Zarling, J.
Zhang, Z.
Zhou, Q.
Zhou, X.
Zihlmann, B.
Περιοδικό:
Physical Review C
Εκδότης:
American Physical Society
Τόμος:
101
Αριθμός / τεύχος:
6
Επίσημο URL (Εκδότης):
DOI:
10.1103/PhysRevC.101.065206
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