Measurement of the nuclear multiplicity ratio for K-s(0) hadronization at CLAS

A Daniel,K Hicks,W K Brooks,H Hakobyan,K P Adhikari, D Adikaram,M Aghasyan,M Amarian,M Anghinolfi,H Avakian,H Baghdasaryan,M Battaglieri,V Batourine,I Bedlinskiy,R Bennett,A S Biselli,C Bookwalter,W J Briscoe,V D Burkert,D S Carman,L Casey,A Celentano,S Chandavar,P L Cole,M Contalbrigo,V Crede,A Dʼangelo,N Dashyan,R De Vita,E De Sanctis,A Deur,B Dey,Robert B Dickson,C Djalali,G E Dodge,D Doughty,H Egiyan,L El Fassi,L Elouadrhiri,P Eugenio,G Fedotov,S J Fegan,M Y Gabrielyan,N Gevorgyan,G P Gilfoyle,K L Giovanetti,F X Girod,J T Goetz,W Gohn,E Golovatch,R W Gothe,K A Griffioen,M Guidal, Lili Guo,C Hanretty,D Heddle,M Holtrop,C E Hyde,Y Ilieva,D G Ireland,B S Ishkhanov,E L Isupov,S S Jawalkar,H S Jo,K Joo,N Kalantarians,D Keller,M Khandaker,P Khetarpal,A Kim,W Kim,A Klein,F J Klein,V Kubarovsky,S Kuleshov, Viacheslav Slava Kuznetsov,H Y Lu,I J D Macgregor,Y Mao,N Markov,M Mayer,J Mcandrew,B Mckinnon,C A Meyer,T Mineeva,M Mirazita,V Mokeev,H Moutarde,E Munevar,P Nadelturonski,A Ni,S Niccolai,G Niculescu,I Niculescu,M Osipenko,A I Ostrovidov,Mario Paolone,L L Pappalardo,R Paremuzyan,K Park,Sanghui Park,E Pasyuk,S Anefalos Pereira,E Phelps,S Pisano,O Pogorelko,S Pozdniakov,J W Price,S Procureur,D Protopopescu,B A Raue,G Ricco,D Rimal,M Ripani,G Rosner,P Rossi,F Sabatie,M S Saini,C Salgado,D Schott,R A Schumacher,H Seraydaryan,Y G Sharabian,George Davey Smith,D I Sober,D Sokhan,S S Stepanyan,S Strauch,M Taiuti,Wei Tang,C Taylor,S Tkachenko,M Ungaro,B Vernarsky,M F Vineyard,H Voskanyan,E Voutier,D P Watts,L B Weinstein,D P Weygand,M H Wood,L Zana,N Zachariou,Bin Zhao,Z W Zhao

Physics Letters B（2011）

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摘要

The influence of cold nuclear matter on lepto-production of hadrons in semi-inclusive deep inelastic scattering is measured using the CLAS detector in Hall B at Jefferson Lab and a 5.014 GeV electron beam. We report the Ks0 multiplicity ratios for targets of C, Fe, and Pb relative to deuterium as a function of the fractional virtual photon energy z transferred to the Ks0 and the transverse momentum squared pT2 of the Ks0. We find that the multiplicity ratios for Ks0 are reduced in the nuclear medium at high z and low pT2, with a trend for the Ks0 transverse momentum to be broadened in the nucleus for large pT2.

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关键词

Hadronization,Hadron production,Deep inelastic scattering,Nuclei,Quarks

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