New Measurements of the European Muon Collaboration Effect in Very Light Nuclei

J Seely,R Asaturyan,S Tajima,D Day,D H Potterveld,T Horn,B Clasie,D Kiselev,X Qian,D Gaskell,C Hill,D Dutta,L Yuan,R J Holt,V M Rodriguez,V Punjabi,C Lee,R Ent,L El Fassi,G Niculescu,Y Okayasu,K Slifer,P E Reimer,F Benmokhtar,H Fenker,J Roche,P Bosted,O Rondon,S A Wood,A Daniel,T Navasardyan,H Mkrtchyan,B Boillat,L Tang,R Trojer,M E Christy,P Solvignon,A K Opper,V Tvaskis,W Boeglin,N Fomin,B W Filippone,J Arrington,M H S Bukhari,J Wright,J Jourdan,E Segbefia,V Tadevosyan,X Zheng,G R Smith,J Dunne,F R Wesselmann,M K Jones,M Kotulla,A Bruell,T Mertens,S Malace,E Schulte,M M Dalton,G Testa,N Kalantarians,I Niculescu,E V Hungerford ,C Keppel ,Hiroshi Nomura ,D Meekins ,Gao H ,A Lung ,S H Connell ,C F Perdrisat ,W Vulcan

doi:10.1103/physrevlett.103.202301

New Measurements of the European Muon Collaboration Effect in Very Light Nuclei

J Seely, R Asaturyan + Show 69 more

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https://doi.org/10.1103/physrevlett.103.202301

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#EMC Effect #American Physical Society + Show 8 more

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Abstract

New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from (2)H, (3)He, (4)He, (9)Be and (12)C for 0.3 < x < 0.9, Q(2) approximately 3-6 GeV(2). These data represent the first measurement of the EMC effect for (3)He at large x and a significant improvement for (4)He. The data do not support previous A-dependent or density-dependent fits to the EMC effect and suggest that the nuclear dependence of the quark distributions may depend on the local nuclear environment.

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