Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at s = 13 √s=13 TeV
Name
Sirunyan2019_Article_SearchForContactInteractionsAn.pdf
Description
Published version
Size
578.1 KB
Format
Adobe PDF
Checksum (MD5)
9a3b2d22d6665d4bec0b03dae72d9d63
Author(s)
CMS collaboration
Abercrombie, Daniel Robert
Allen, B.
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bauer, Gerry P
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Date Issued
April 2019
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
CMS Collaboration (Sirunyan, A.M. et al.) "Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at s = 13 √s=13 TeV." Journal of High Energy Physics 2019 (April 2019): 114 ©2019 Author(s)
Version
Final published version
Abstract
A search for nonresonant excesses in the invariant mass spectra of electron and muon pairs is presented. The analysis is based on data from proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the CMS experiment in 2016, corresponding to a total integrated luminosity of 36 fb −1 . No significant deviation from the standard model is observed. Limits are set at 95% confidence level on energy scales for two general classes of nonresonant models. For a class of fermion contact interaction models, lower limits ranging from 20 to 32 TeV are set on the characteristic compositeness scale Λ. For the Arkani-Hamed, Dimopoulos, and Dvali model of large extra dimensions, the first results in the dilepton final state at 13 TeV are reported, and values of the ultraviolet cutoff parameter Λ T below 6.9 TeV are excluded. A combination with recent CMS diphoton results improves this exclusion to Λ T below 7.7 TeV, providing the most sensitive limits to date in nonhadronic final states.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP04(2019)114
