Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at root s=13 TeV

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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 . 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 (T) below 6.9 TeV are excluded. A combination with recent CMS diphoton results improves this exclusion to (T) below 7.7 TeV, providing the most sensitive limits to date in nonhadronic final states.

Original languageEnglish
Article number114
JournalJournal of High Energy Physics
Volume2019
Issue number4
Number of pages36
ISSN1029-8479
DOIs
Publication statusPublished - 17 Apr 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences
  • Beyond Standard Model
  • Hadron-Hadron scattering (experiments)

Cite this

@article{8215752c2f8d48f2ba72a46609881bf5,
title = "Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at root s=13 TeV",
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 . 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 (T) below 6.9 TeV are excluded. A combination with recent CMS diphoton results improves this exclusion to (T) below 7.7 TeV, providing the most sensitive limits to date in nonhadronic final states.",
keywords = "114 Physical sciences, Beyond Standard Model, Hadron-Hadron scattering (experiments)",
author = "{The CMS Collaboration} and Sirunyan, {A. M.} and P. Eerola and H. Kirschenmann and J. Pekkanen and M. Voutilainen and J. Havukainen and Heikkil{\"a}, {J. K.} and T. J{\"a}rvinen and V. Karim{\"a}ki and R. Kinnunen and T. Lamp{\'e}n and K. Lassila-Perini and S. Laurila and S. Lehti and T. Lind{\'e}n and P. Luukka and T. M{\"a}enp{\"a}{\"a} and H. Siikonen and E. Tuominen and J. Tuominiemi and T. Tuuva",
year = "2019",
month = "4",
day = "17",
doi = "10.1007/JHEP04(2019)114",
language = "English",
volume = "2019",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer",
number = "4",

}

TY - JOUR

T1 - Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at root s=13 TeV

AU - The CMS Collaboration

AU - Sirunyan, A. M.

AU - Eerola, P.

AU - Kirschenmann, H.

AU - Pekkanen, J.

AU - Voutilainen, M.

AU - Havukainen, J.

AU - Heikkilä, J. K.

AU - Järvinen, T.

AU - Karimäki, V.

AU - Kinnunen, R.

AU - Lampén, T.

AU - Lassila-Perini, K.

AU - Laurila, S.

AU - Lehti, S.

AU - Lindén, T.

AU - Luukka, P.

AU - Mäenpää, T.

AU - Siikonen, H.

AU - Tuominen, E.

AU - Tuominiemi, J.

AU - Tuuva, T.

PY - 2019/4/17

Y1 - 2019/4/17

N2 - 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 . 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 (T) below 6.9 TeV are excluded. A combination with recent CMS diphoton results improves this exclusion to (T) below 7.7 TeV, providing the most sensitive limits to date in nonhadronic final states.

AB - 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 . 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 (T) below 6.9 TeV are excluded. A combination with recent CMS diphoton results improves this exclusion to (T) below 7.7 TeV, providing the most sensitive limits to date in nonhadronic final states.

KW - 114 Physical sciences

KW - Beyond Standard Model

KW - Hadron-Hadron scattering (experiments)

U2 - 10.1007/JHEP04(2019)114

DO - 10.1007/JHEP04(2019)114

M3 - Article

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 4

M1 - 114

ER -