Speaker
Ruchi Chudasama
(Tata Institue of Fundamental Research)
Description
Elastic light-by-light scattering, $\gamma\gamma\rightarrow\gamma\gamma$, is a pure quantum mechanical process, also proposed as a sensitive channel to study physics beyond the standard model. We present the first combination of $\gamma\gamma\rightarrow\gamma\gamma$ cross-section measurement at the LHC, using lead-lead data recorded by the ATLAS and CMS collaborations at 5.02 TeV with the aim of checking the consistency with different standard model predictions. We find the averaged cross-section of 115 $\pm$ 19 nb that is consistent with standard model predictions within two standard deviations. For the first time, we also consider the contribution from $\eta_{b}$(1$S$) meson production to the diphoton invariant mass distribution.
| Session | Heavy Ions and QCD |
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Authors
Dr
Georgios Krintiras
(The University of Kansas (US))
Iwona Grabowska-Bold
(AGH University of Science and Technology (PL))
Mariola Klusek-Gawenda
(Institute of Nuclear Physics Polish Academy of Sciences)
Raphael Granier De Cassagnac
(Centre National de la Recherche Scientifique (FR))
Ruchi Chudasama
(Tata Institue of Fundamental Research)
Émilien Chapon
(Université Paris-Saclay (FR))
