Experimental results on J/ψ production by π±, K±, p and incident on hydrogen at 39.5 GeV/c |
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Authors: | MJ Corden JD Dowell J Garvey RJ Homer M Jobes IR Kenyon T McMahon RC Owen KCTO Sumorok RJ Vallance PM Watkins JA Wilson P Sonderegger B Chaurand A Romana R Salmeron |
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Institution: | Birmingham University, Birmingham, UK;CERN, Geneva, Switzerland;Ecole Polytechnique, Palaiseau, France |
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Abstract: | J/ψ production at 40 GeV/c by π±, K±, p and incident on hydrogen has been studied and results compared with those obtained on tungsten in the same experiment. On hydrogen, J/ψ cross-section ratios relative to π? have been measured to be (for . The suppression of the proton induced cross sections shows the importance of calence quark-antiquark fusiin J/ψ production at this energy (i.e. MJ2/ψ/s=0.13). |
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