in p+pbar collisions at sqrt{s}
in p+pbar collisions at sqrt{s}
in p+pbar collisions at sqrt{s}
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Summary<br />
• First measurement of J/ψ→e + e - photo-production and of twophoton<br />
production of high-mass e + e - <strong>in</strong> nucleus-nucleus<br />
<strong>in</strong>teractions<br />
• Other hadron collider measurements: CDF(J/Ψ,Ψ’…), STAR (ρ)<br />
• Test<strong>in</strong>g of our understand<strong>in</strong>g of these processes<br />
• Coherent vs Incoherent<br />
• Does DESY experience transl<strong>at</strong>e to hadron-hadron colliders?<br />
• Indic<strong>at</strong>ions are th<strong>at</strong> it does<br />
• How to trigger (experimental issues)<br />
• Good progress on this issue<br />
• Important for<br />
• Future searches for new physics <strong>in</strong> diffractive p+p and Pb+Pb <strong>at</strong> LHC<br />
• Can reach mass <strong>at</strong> TeV scales – good sensitivity to Higgs and SUSY<br />
• Constra<strong>in</strong>ts on QCD background to above searches by measurement<br />
of g(x) and g A (x) <strong>at</strong> low x<br />
• Gluon S<strong>at</strong>ur<strong>at</strong>ion<br />
• Understand<strong>in</strong>g J/Ψ propag<strong>at</strong>ion through nuclear m<strong>at</strong>ter?<br />
• Tests of EM <strong>in</strong> strong coupl<strong>in</strong>g regime – Reaches Schw<strong>in</strong>ger Limit<br />
ISSP-Erice Mickey Chiu 18 / 16
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