• Open Access

Search for Narrow Resonances in Dijet Final States at s=8TeV with the Novel CMS Technique of Data Scouting

V. Khachatryan et al. (CMS Collaboration)
Phys. Rev. Lett. 117, 031802 – Published 14 July 2016

Abstract

A search for narrow resonances decaying into dijet final states is performed on data from proton-proton collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 18.8fb1. The data were collected with the CMS detector using a novel technique called data scouting, in which the information associated with these selected events is much reduced, permitting collection of larger data samples. This technique enables CMS to record events containing jets at a rate of 1 kHz, by collecting the data from the high-level-trigger system. In this way, the sensitivity to low-mass resonances is increased significantly, allowing previously inaccessible couplings of new resonances to quarks and gluons to be probed. The resulting dijet mass distribution yields no evidence of narrow resonances. Upper limits are presented on the resonance cross sections as a function of mass, and compared with a variety of models predicting narrow resonances. The limits are translated into upper limits on the coupling of a leptophobic resonance ZB to quarks, improving on the results obtained by previous experiments for the mass range from 500 to 800 GeV.

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  • Received 29 April 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.031802

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2016 CERN, for the CMS Collaboration

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Vol. 117, Iss. 3 — 15 July 2016

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