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arXiv · 1611.08210

Semiexclusive production of $J/ψ$ mesons in proton-proton collisions with electromagnetic and diffractive dissociation of one of the protons

Anna Cisek·Wolfgang Schäfer·Antoni Szczurek
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Abstract

We calculate the cross sections for both electromagnetic and diffractive dissociation of protons for semiexclusive production of $J/ψ$ mesons in proton-proton collisions at the LHC. Several differential distributions in missing mass ($M_X$), or single-particle variables related exclusively to the $J/ψ$ meson are calculated for $\sqrt{s}$ = 7 TeV as an example. The cross sections and distributions are compared to the cross section of the purely exclusive reaction $p p \to p p J/ψ$. We show the corresponding ratio as a function of $J/ψ$ meson rapidity. We compare the distributions for purely electromagnetic and purely diffractive proton excitations/dissociation. We predict cross sections for electromagnetic and diffractive excitations of similar order of magnitude.

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Anna Cisek, Wolfgang Schäfer, Antoni Szczurek. 2016-11-24. Semiexclusive production of $J/ψ$ mesons in proton-proton collisions with electromagnetic and diffractive dissociation of one of the protons. https://doi.org/10.1016/j.physletb.2017.03.048

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