Search for dijet resonances using events with three jets in proton-proton collisions at s=13TeV

Albert M. Sirunyan,Armen Tumasyan,Wolfgang Adam,Federico Ambrogi,Thomas Bergauer,Marko Dragicevic,Janos Erö,A. Escalante Del Valle,M. Flechl, R. Frühwirth,Manfred Jeitler, Natascha Krammer,Ilse Krätschmer,Dietrich Liko,Thomas Madlener, Ivan Mikulec,Navid Rad, Jochen Schieck,Robert Schöfbeck,Markus Spanring, Daniel Spitzbart,Wolfgang Waltenberger,C.-E. Wulz, Mateusz Zarucki,V. Drugakov, Vladimir Mossolov,J. Suarez Gonzalez, Mohamed Rashad Darwish,E. A. De Wolf,D. Di Croce,Xavier Janssen,Aleksandra Lelek, Maxim Pieters,H. Rejeb Sfar,H. Van Haevermaet,P. Van Mechelen,S. Van Putte,N. Van Remortel,Freya Blekman,Emil Sørensen Bols,Simranjit Singh Chhibra,Jorgen D'Hondt,J. De Clercq,Denys Lontkovskyi,Steven Lowette,Ivan Marchesini,Seth Moortgat, Quentin Python,Kirill Skovpen,Stefaan Tavernier,W. Van Doninck,P. Van Mulders,Diego Beghin,Bugra Bilin,Barbara Clerbaux,G. De Lentdecker,Hugo Delannoy,Brian Dorney,Laurent Favart,Anastasia Grebenyuk,Amandeep Kaur Kalsi,Andrey Popov,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,C. Vander Velde,Pascal Vanlaer,David Vannerom,Tom Cornelis, Didar Dobur,Illia Khvastunov,Marek Niedziela,Christos Roskas,Michael Tytgat,Willem Verbeke, Basile Vermassen, Martina Vit,Olivier Bondu,Giacomo Bruno,Claudio Caputo,Pieter David,Christophe Delaere,Martin Delcourt,Andrea Giammanco,Vincent Lemaitre,Jessica Prisciandaro, Alessia Saggio,M. Vidal Marono,Pietro Vischia, Joze Zobec,Fábio Lúcio Alves,Gilvan Alves,G. Correia Silva,Carsten Hensel,A. Moraes,P. Rebello Teles,E. Belchior Batista Das Chagas,Wagner Carvalho,Jose Chinellato,Eduardo Coelho

Physics Letters B(2020)

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Abstract
A search for a narrow resonance with a mass between 350 and 700 GeV, and decaying into a pair of jets, is performed using proton-proton collision events containing at least three jets. The sample corresponds to an integrated luminosity of 18.3 fb(-1) recorded at root s = 13 TeV with the CMS detector. Data are collected with a technique known as data scouting, in which the events are reconstructed, selected, and recorded at a high rate in a compact form by the high-level trigger. The three-jet final state provides sensitivity to lower resonance masses than in previous searches using the scouting technique. The spectrum of the dijet invariant mass, calculated from the two jets with the largest transverse momenta in the event, is used to search for a resonance. No significant excess over a smoothly falling background is found. Limits at 95% confidence level are set on the production cross section of a narrow dijet resonance and compared with the cross section of a vector dark matter mediator coupling to dark matter particles and quarks. Translating to a model where the narrow resonance interacts only with quarks, upper limits on this coupling range between 0.10 and 0.15, depending on the resonance mass. These results represent the most stringent upper limits in the mass range between 350 and 450 GeV obtained with a flavor-inclusive dijet resonance search. (C) 2020 The Author(s). Published by Elsevier B.V.
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Key words
CMS,Physics,Dijets,Resonances
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