Production of axionlike particles in PbPb collisions at the LHC, HE–LHC and FCC: A phenomenological analysis

The production of axionlike particles (ALP) in ultraperipheral PbPb collisions (UPHIC) is investigated considering the energies of the next run of the Large Hadron Collider (LHC) and of the future High Energy–LHC (HE–LHC) and Future Circular Collider (FCC). Assuming four different combinations for t...

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Bibliographic Details
Published in:Physics letters. B 2020-07, Vol.806, p.135512, Article 135512
Main Authors: Coelho, R.O., Gonçalves, V.P., Martins, D.E., Rangel, M.S.
Format: Article
Language:English
Subjects:
Axionlike particles
Heavy ion collisions
Light-by-light scattering
Photon–photon interactions
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Summary:The production of axionlike particles (ALP) in ultraperipheral PbPb collisions (UPHIC) is investigated considering the energies of the next run of the Large Hadron Collider (LHC) and of the future High Energy–LHC (HE–LHC) and Future Circular Collider (FCC). Assuming four different combinations for the ALP mass and coupling and the typical exclusivity cuts for central and forward detectors, we estimate the cross section and invariant mass, rapidity, transverse momentum and acoplanarity distributions associated to the diphoton final state produced in the γγ→a→γγ subprocesses. A detailed analysis of the backgrounds is performed. We demonstrate that the backgrounds can be strongly reduced by the exclusivity cuts and that a forward detector, as the LHCb, is ideal to probe an ALP with small mass. Finally, our results indicate that a future experimental analysis of the diphoton final state in UPHIC can probe the existence and properties of axionlike particles.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2020.135512