Search for black holes and sphalerons in high-multiplicity final states in proton-proton collisions a root s=13 TeVt
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Author(s)
Type
Journal Article
Abstract
A search in energetic, high-multiplicity final states for evidence of physics beyond the standard model, such as black holes, string balls, and electroweak sphalerons, is presented. The data sample corresponds to an integrated luminosity of 35.9 fb−1 collected with the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV in 2016. Standard model backgrounds, dominated by multijet production, are determined from control regions in data without any reliance on simulation. No evidence for excesses above the predicted background is observed. Model-independent 95% confidence level upper limits on the cross section of beyond the standard model signals in these final states are set and further interpreted in terms of limits on semiclassical black hole, string ball, and sphaleron production. In the context of models with large extra dimensions, semiclassical black holes with minimum masses as high as 10.1 TeV and string balls with masses as high as 9.5 TeV are excluded by this search. Results of the first dedicated search for electroweak sphalerons are presented. An upper limit of 0.021 is set at 95% confidence level on the fraction of all quark-quark interactions above the nominal threshold energy of 9 TeV resulting in the sphaleron transition.
Date Issued
2018-11-07
Online Publication Date
2018-11-07
2018-12-03T10:42:38Z
Date Acceptance
2018-10-27
ISSN
1029-8479
Publisher
SPRINGER
Journal / Book Title
JOURNAL OF HIGH ENERGY PHYSICS
Volume
2018
Issue
11
Copyright Statement
© 2018 The Author(s). Open Access.
This article is distributed under the terms of the Creative Commons
Attribution License (
CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/
), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
This article is distributed under the terms of the Creative Commons
Attribution License (
CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/
), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Source Database
web-of-science
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000450504400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Beyond Standard Model
Hadron-Hadron scattering (experiments)
SCALE GRAVITY SIGNATURES
ATLAS DETECTOR
SUPERGAUGE TRANSFORMATIONS
PARTON DISTRIBUTIONS
LHC
PARTICLE
MODEL
DIMENSIONS
LEPTONS
MASS
hep-ex
01 Mathematical Sciences
02 Physical Sciences
Nuclear & Particles Physics
Publication Status
Published
Article Number
ARTN 042
Date Publish Online
2018-11-07