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20 April 2024

» arxiv » 1011.1305

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Near-threshold Photoproduction of Phi Mesons from Deuterium
X. Qian ; W. Chen ; H. Gao ; K. Hicks ; K. Kramer ; J.M. Laget ; T. Mibe ; Y. Qiang ; S. Stepanyan ; D.J. Tedeschi ; W. Xu ; K.P. Adhikari ; M. Amaryan ; M. Anghinolfi ; J. Ball ; M. Battaglieri ; V. Batourine ; I. Bedlinskiy ; M. Bellis ; A.S. Biselli ; C. Bookwalter ; D. Branford ; W.J. Briscoe ; W.K. Brooks ; V.D. Burkert ; S.L. Careccia ; D.S. Carman ; P.L. Cole ; P. Collins ; V. Crede ; A. D'Angelo ; A. Daniel ; N. Dashyan ; R. De Vita ; E. De Sanctis ; A. Deur ; B. Dey ; S. Dhamija ; C. Djalali ; D. Doughty ; R. Dupre ; H. Egiyan ; A. El Alaoui ; P. Eugenio ; S. Fegan ; M.Y. Gabrielyan ; N. Gevorgyan ; G.P. Gilfoyle ; K.L. Giovanetti ; F.X. Girod ; J.T. Goetz ; W. Gohn ; R.W. Gothe ; L. Graham ; K.A. Griffioen ; M. Guidal ; L. Guo ; K. Hafidi ; H. Hakobyan ; C. Hanretty ; N. Hassall ; M. Holtrop ; Y. Ilieva ; D.G. Ireland ; S.S. Jawalkar ; H.S. Jo ; K. Joo ; D. Keller ; M. Khandaker ; P. Khetarpal ; A. Kim ; W. Kim ; A. Klein ; F.J. Klein ; P. Konczykowski ; V. Kubarovsky ; S.V. Kuleshov ; V. Kuznetsov ; K. Livingston ; D. Martinez ; M. Mayer ; J. McAndrew ; M.E. McCracken ; B. McKinnon ; C.A. Meyer ; K. Mikhailov ; T. Mineeva ; M. Mirazita ; V. Mokeev ; B. Moreno ; K. Moriya ; B. Morrison ; H. Moutarde ; E. Munevar ; P. Nadel-Turonski ; A. Ni ; S. Niccolai ; I. Niculescu ; M.R. Niroula ; M. Osipenko ; A.I. Ostrovidov ; R. Paremuzyan ; K. Park ; S. Park ; S. Anefalos Pereira ; S. Pisano ; O. Pogorelko ; S. Pozdniakov ; J.W. Price ; S. Procureur ; D. Protopopescu ; G. Ricco ; M. Ripani ; B.G. Ritchie ; G. Rosner ; P. Rossi ; F. Sabatié ; M.S. Saini ; C. Salgado ; D. Schott ; R.A. Schumacher ; E. Seder ; H. Seraydaryan ; Y.G. Sharabian ; E.S. Smith ; G.D. Smith ; D.I. Sober ; D. Sokhan ; S.S. Stepanyan ; P. Stoler ; I.I. Strakovsky ; S. Strauch ; M. Taiuti ; C.E. Taylor ; S. Tkachenko ; M. Ungaro ; B .Vernarsky ; M.F. Vineyard ; E. Voutier ; L.B. Weinstein ; D.P. Weygand ; M.H. Wood ; N. Zachariou ; L. Zana ; J. Zhang ; B. Zhao ; Z.W. Zhao ;
Date:	5 Nov 2010
Abstract:	We report the first measurement of the differential cross section on $phi$-meson photoproduction from deuterium near the production threshold for a proton using the CLAS detector and a tagged-photon beam in Hall B at Jefferson Lab. The measurement was carried out by a triple coincidence detection of a proton, $K^+$ and $K^-$ near the theoretical production threshold of 1.57 GeV. The extracted differential cross sections $frac{dsigma}{dt}$ for the initial photon energy from 1.65-1.75 GeV are consistent with predictions based on a quasifree mechanism. This experiment establishes a baseline for a future experimental search for an exotic $phi$-N bound state from heavier nuclear targets utilizing subthreshold/near-threshold production of $phi$ mesons.
Source:	arXiv, 1011.1305
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