Gamma-radiation as a Signature of Ultra Peripheral Ion Collisions at LHC energies

Details Gamma-radiation as a Signature of Ultra Peripheral Ion Collisions at LHC energies Gamma-radiation as a Signature of Ultra Peripheral Ion Collisions at LHC energies

2004-01-13

arxiv.org/abs/nucl-th/0401027v1

Eur.Phys.J. A21 (2004) 437-443

Physics

Nuclear Physics

Nuclear Theory

14 pages, 6 Postscript figures

Scientific paper

10.1140/epja/i2004-10008-x

We study the peripheral ion collisions at LHC energies in which a nucleus is excited to the discrete state and then emits $\gamma$-rays. Large nuclear Lorenz factor allows to observe the high energy photons up to a few ten GeV and in the region of angles of a few hundred micro-radians around the beam direction. These photons can be used for tagging the events with particle production in the central rapidity region in the ultra-peripheral collisions. For that it is necessary to have an electromagnetic detector in front of the zero degree calorimeter in the LHC experiments.

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