Title
Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector
Date Issued
01 January 2018
Access level
open access
Resource Type
journal article
Author(s)
Aaboud M.
Aad G.
Abbott B.
Abdinov O.
Abeloos B.
Abidi S.H.
AbouZeid O.S.
Abraham N.L.
Abramowicz H.
Abreu H.
Abreu R.
Abulaiti Y.
Acharya B.S.
Adachi S.
Adamczyk L.
Adelman J.
Adersberger M.
Adye T.
Affolder A.A.
Afik Y.
Agatonovic-Jovin T.
Agheorghiesei C.
Aguilar-Saavedra J.A.
Ahlen S.P.
Ahmadov F.
Aielli G.
Akatsuka S.
Akerstedt H.
Åkesson T.P.A.
Akilli E.
Akimov A.V.
Alberghi G.L.
Albert J.
Albicocco P.
Alconada Verzini M.J.
Alderweireldt S.C.
Aleksa M.
Aleksandrov I.N.
Alexa C.
Alexander G.
Alexopoulos T.
Alhroob M.
Ali B.
Aliev M.
Alimonti G.
Alison J.
Alkire S.P.
Allbrooke B.M.M.
Allen B.W.
Allport P.P.
Aloisio A.
Alonso A.
Alonso F.
Alpigiani C.
Alshehri A.A.
Alstaty M.I.
Alvarez Gonzalez B.
Álvarez Piqueras D.
Alviggi M.G.
Amadio B.T.
Amaral Coutinho Y.
Amelung C.
Amidei D.
Amor Dos Santos S.P.
Amoroso S.
Anastopoulos C.
Ancu L.S.
Andari N.
Andeen T.
Anders C.F.
Anders J.K.
Anderson K.J.
Andreazza A.
Andrei V.
Angelidakis S.
Angelozzi I.
Angerami A.
Anisenkov A.V.
Anjos N.
Annovi A.
Antel C.
Antonelli M.
Antonov A.
Antrim D.J.
Anulli F.
Aoki M.
Aperio Bella L.
Arabidze G.
Arai Y.
Araque J.P.
Araujo Ferraz V.
Arce A.T.H.
Ardell R.E.
Arduh F.A.
Arguin J.F.
Argyropoulos S.
Arik M.
Armbruster A.J.
Armitage L.J.
Arnaez O.
Publisher(s)
Springer New York LLC
Abstract
A search for weakly interacting massive dark-matter particles produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and missing transverse momentum are considered. The analysis uses 36.1fb-1 of proton–proton collision data recorded by the ATLAS experiment at s=13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are interpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour-neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross-section of 300 times the predicted rate for mediators with masses between 10 and 50GeV and assuming a dark-matter mass of 1GeV and unitary coupling. Constraints on colour-charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35GeV, mediator particles with mass below 1.1TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements.
Volume
78
Issue
1
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-85040740833
Source
European Physical Journal C
ISSN of the container
1434-6044
Sponsor(s)
Acknowledgements We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIEN-CIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; SRNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wal-lenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, ERDF, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex and Idex, ANR, Région Auvergne and Fondation Partager le Savoir, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; CERCA Programme Generalitat de Catalunya, Generalitat Valenciana, Spain; the Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [110].
Sources of information:
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Scopus