Search for physics beyond the standard model in the high-mass diphoton spectrum at $13~\mathrm{TeV}$ - INSPIRE

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Search for physics beyond the standard model in the high-mass diphoton spectrum at $13~\mathrm{TeV}$

CMS

Collaboration

2018

Report number:

CMS-PAS-EXO-17-017

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

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Abstract:

A search is performed for physics beyond the standard model in high-mass diphoton events from proton-proton collisions at

\sqrt{s} = 13~\mathrm{TeV}

, using data corresponding to an integrated luminosity of

35.9~\mathrm{fb}^{-1}

, delivered in 2016 to the CMS detector by the CERN Large Hadron Collider. Both resonant and nonresonant new physics signatures are searched for, using different techniques to estimate the background. Constraints are placed on the mass of the first graviton excitation in the Randall--Sundrum warped extra dimension model in the range of

2

to

4~\mathrm{TeV}

, for values of the associated coupling parameter between

0.01

and

0.2

. Limits on the production of scalar resonances and model-independent fiducial cross section upper limits are also provided. For the large extra dimension model of Arkani--Hamed, Dimopoulos, and Dvali, lower limits are set on the ultraviolet cutoff scale

M_S

ranging from

5.6

to

9.7~\mathrm{TeV}

, depending on the model parameters. Limits are also set on the continuum clockwork mechanism.

Note:

Preliminary results

Data
p p: colliding beams
photon: pair production
new physics: search for
model: higher-dimensional
space-time: higher-dimensional
channel cross section: upper limit
graviton: excited state
graviton: Kaluza-Klein
new physics: signature

References(45)

Figures(18)

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