Testing noncommutative QED gamma gamma gamma and gamma gamma gamma gamma couplings at LHC

In this work, we investigate the sensitivity of the process p + p --> q + q --> j + j + gamma + gamma at LHC for the photonic 3- and 4- point functions that appear in non commutative QED. We show that this process serves to study the behavior of the space-space as well as of the space-time non commutativity. We also show that this process can probe the non commutative scale in the range of few TeV.

Note:

minor changes, references added, version to appears in EPJC

p p: exclusive reaction
photon: pair production
jet: associated production
jet: pair production
quantum electrodynamics: noncommutative
vertex function: (3photon)
vertex function: (4photon)
n-point function: 4
background
mass spectrum: (2photon)

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