Search for physics beyond the standard model in high-mass diphoton events from proton-proton collisions at s =13 TeV
A search for physics beyond the standard model is performed using a sample of high-mass diphoton events produced in proton-proton collisions at ffiffi s p ¼ 13 TeV. The data sample was collected in 2016 with the CMS detector at the LHC and corresponds to an integrated luminosity of 35.9 fb−1. The...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
American Physical Society
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/69736/1/69736_Search%20for%20physics%20beyond%20the%20standard%20model_article.pdf http://irep.iium.edu.my/69736/2/69736_Search%20for%20physics%20beyond%20the%20standard%20model_scopus.pdf http://irep.iium.edu.my/69736/ https://journals.aps.org/prd/pdf/10.1103/PhysRevD.98.092001 |
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| Summary: | A search for physics beyond the standard model is performed using a sample of high-mass diphoton
events produced in proton-proton collisions at ffiffi
s p ¼ 13 TeV. The data sample was collected in 2016 with
the CMS detector at the LHC and corresponds to an integrated luminosity of 35.9 fb−1. The search is
performed for both resonant and nonresonant new physics signatures. At 95% confidence level, lower
limits on the mass of the first Kaluza-Klein excitation of the graviton in the Randall-Sundrum warped extradimensional model are determined to be in the range of 2.3 to 4.6 TeV, for values of the associated coupling
parameter between 0.01 and 0.2. Lower limits on the production of scalar resonances and modelindependent cross section upper limits are also provided. For the large extra-dimensional model of ArkaniHamed, Dimopoulos, and Dvali, lower limits are set on the string mass scale MS ranging from 5.6 to
9.7 TeV, depending on the model parameters. The first exclusion limits are set in the two-dimensional
parameter space of a continuum clockwork model. |
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