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Absorption of the $\omega$ and $\phi$ Mesons in Nuclei

M.H. Wood R. Nasseripour M. Paolone C. Djalali D.P. Weygand K.P. Adhikari M. Anghinolfi J. Ball 1 M. Battaglieri V. Batourine I. Bedlinskiy M. Bellis B.L. Berman A.S. Biselli 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 R. de Vita E. de Sanctis A. Deur B. Dey S. Dhamija R. Dickson D. Doughty R. Dupre H. Egiyan A. El Alaoui L. El Fassi P. Eugenio S. Fegan M.Y. Gabrielyan M. Garçon 1 G.P. Gilfoyle K.L. Giovanetti F.X. Girod 1 J.T. Goetz W. Gohn R.W. Gothe L. Graham M. Guidal 2 L. Guo K. Hafidi H. Hakobyan C. Hanretty N. Hassall K. Hicks M. Holtrop Y. Ilieva D.G. Ireland B.S. Ishkhanov S.S. Jawalkar H.S. Jo 2 K. Joo D. Keller M. Khandaker P. Khetarpal A. Kim W. Kim A. Klein F.J. Klein P. Konczykowski 1 V. Kubarovsky S.V. Kuleshov V. Kuznetsov K. Livingston David Martinez M. Mayer J. Mcandrew M.E. Mccracken B. Mckinnon C.A. Meyer T. Mineeva M. Mirazita V. Mokeev B. Moreno 1 K. Moriya B. Morrison E. Munevar P. Nadel-Turonski A. Ni S. Niccolai 2 G. Niculescu I. Niculescu M.R. Niroula M. Osipenko A.I. Ostrovidov R. Paremuzyan K. Park S. Park E. Pasyuk S. Anefalos Pereira S. Pisano 2 O. Pogorelko S. Pozdniakov J.W. Price S. Procureur 1 Y. Prok D. Protopopescu B.A. Raue G. Ricco M. Ripani G. Rosner P. Rossi F. Sabatié 1 M.S. Saini J. Salamanca C. Salgado D. Schott R.A. Schumacher E. Seder H. Seraydaryan Y.G. Sharabian G.D. Smith D.I. Sober D. Sokhan 2 S. Stepanyan S.S. Stepanyan P. Stoler I.I. Strakovsky S. Strauch M. Taiuti W. Tang C.E. Taylor D.J. Tedeschi S. Tkachenko M. Ungaro B. Vernarsky M.F. Vineyard E. Voutier 3 D.P. Watts L.B. Weinstein J. Zhang B. Zhao Z.W. Zhao
Abstract : Due to their long lifetimes, the $\omega$ and $\phi$ mesons are the ideal candidates for the study of possible modifications of the in-medium meson-nucleon interaction through their absorption inside the nucleus. During the E01-112 experiment at the Thomas Jefferson National Accelerator Facility, the mesons were photoproduced from $^{2}$H, C, Ti, Fe, and Pb targets. This paper reports the first measurement of the ratio of nuclear transparencies for the $e^{+}e^{-}$ channel. The ratios indicate larger in-medium widths compared with what have been reported in other reaction channels.
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M.H. Wood, R. Nasseripour, M. Paolone, C. Djalali, D.P. Weygand, et al.. Absorption of the $\omega$ and $\phi$ Mesons in Nuclei. Physical Review Letters, American Physical Society, 2010, 105, pp.112301. ⟨10.1103/PhysRevLett.105.112301⟩. ⟨in2p3-00493111⟩

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