Search for dark matter particles in proton-proton collisions at √ s=8 TeV using the razor variables
Search for dark matter particles in proton-proton collisions at √ s=8 TeV using the razor variables
A search for dark matter particles directly produced in proton-proton collisions recorded by the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 18.8 fb−1, at a center-of-mass energy of 8 TeV. The event selection requires at least two jets and no isolated leptons. The razor variables are used to quantify the transverse momentum balance in the jet momenta. The study is performed separately for events with and without jets originating from b quarks. The observed yields are consistent with the expected backgrounds and, depending on the nature of the production mechanism, dark matter production at the LHC is excluded at 90% confidence level for a mediator mass scale Λ below 1 TeV. The use of razor variables yields results that complement those previously published.
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
(2016)
Search for dark matter particles in proton-proton collisions at √ s=8 TeV using the razor variables.
Journal of High Energy Physics, 12, [088].
(doi:10.1007/JHEP12(2016)088).
Abstract
A search for dark matter particles directly produced in proton-proton collisions recorded by the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 18.8 fb−1, at a center-of-mass energy of 8 TeV. The event selection requires at least two jets and no isolated leptons. The razor variables are used to quantify the transverse momentum balance in the jet momenta. The study is performed separately for events with and without jets originating from b quarks. The observed yields are consistent with the expected backgrounds and, depending on the nature of the production mechanism, dark matter production at the LHC is excluded at 90% confidence level for a mediator mass scale Λ below 1 TeV. The use of razor variables yields results that complement those previously published.
Text
art_10.1007_JHEP12(2016)088
- Version of Record
More information
Accepted/In Press date: 21 November 2016
e-pub ahead of print date: 19 December 2016
Organisations:
Physics & Astronomy
Identifiers
Local EPrints ID: 407872
URI: http://eprints.soton.ac.uk/id/eprint/407872
ISSN: 1029-8479
PURE UUID: 4a6613c7-2f7a-45e0-a69c-937ec8d1d1f8
Catalogue record
Date deposited: 27 Apr 2017 01:10
Last modified: 16 Mar 2024 03:54
Export record
Altmetrics
Contributors
Author:
Vardan Khachatryan
Corporate Author: The CMS Collaboration
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
