Upper limits for the photoproduction cross section for theΦ−−(1860)pentaquark state off the deuteron

H Egiyan,F X Girod,I J D Macgregor,N A Baltzell,S Strauch,R Paremuzyan,A Deur,S Procureur,N Dashyan,G Rosner,S Anefalos Pereira,S Chandavar,H S Jo,E De Sanctis,R A Schumacher,K Hicks,H Seraydaryan,A Celentano,C Bookwalter,M Aghasyan,R W Gothe,K A Griffioen,B Mckinnon,A I Ostrovidov,K Hafidi,C Djalali,O Pogorelko,D P Weygand,D S Carman,W Gohn,M Contalbrigo,D Doughty,E Seder,K Livingston,G Niculescu,D J Tedeschi,A Ni,P Mattione,D Branford,D G Ireland,M Holtrop,W J Briscoe,F Sabatié,D Rimal,P Khetarpal,S Pozdniakov,L Graham,D Protopopescu,D I Sober,I Bedlinskiy,D Heddle,M Taiuti,W Kim,R De Vita,H Hakobyan,V Gyurjyan,M Ripani,A Fradi,N Guler,B Dey,N Gevorgyan,E Voutier,A El Alaoui,H Baghdasaryan,E Pasyuk,M Battaglieri,M Guidal,M Ungaro,E Phelps,J Langheinrich,Y G Sharabian,S Stepanyan,D P Watts,L El Fassi,K L Giovanetti,M S Saini,C Hanretty,Y Ilieva,M Anghinolfi,G Ricco,K P Adhikari,E Golovatch,P Eugenio,L B Weinstein,E S Smith,D Schott,A Daniel,R Dupré ,M Gabrielyan ,C Taylor ,L L Pappalardo ,Б С Ишханов ,Barry Ritchie ,E Munévar ,K S Joo ,P Nadel-Turoński ,A Biselli ,Martin Mayer ,H Y Lu ,S Kuleshov ,G S Mutchler ,R Bennett ,Y Mao,K Park,M H Wood,N Zachariou,J T Goetz,L Zana,W Tang,A Klein,G P Gilfoyle,A Kim,Z W Zhao,F J Klein,J Ball,M Paolone,S Fegan,V D Burkert,J W Price,S Park,W K Brooks,R Dickson,G D Smith,B Zhao,A D’Angelo,L Guo,V Kubarovsky,V Mokeev,B A Raue,C Salgado,G Fedotov,P Rossi

doi:10.1103/physrevc.85.015205

Upper limits for the photoproduction cross section for theΦ−−(1860)pentaquark state off the deuteron

H Egiyan, F X Girod + Show 130 more

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https://doi.org/10.1103/physrevc.85.015205

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Journal: Physical review. C	Publication Date: Jan 30, 2012
Citations: 2	License type: publisher-specific, author manuscript

#Decay Channel #Photoproduction Process + Show 8 more

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Abstract

We searched for the Phi--(1860) pentaquark in the photoproduction process off the deuteron in the Xi- pi- decay channel using CLAS. The invariant mass spectrum of the Xi- pi- system does not indicate any statistically significant enhancement near the reported mass M = 1.860 GeV. The statistical analysis of the sideband-subtracted mass spectrum yields a 90% confidence level upper limit of 0.7 nb for the photoproduction cross section of Phi--(1860) with a consecutive decay into Xi- pi- in the photon energy range 4.5 GeV < Egamma < 5.5 GeV.

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