Search for pair production of first-generation scalar leptoquarks at √s=13 TeV

• Main Authors: Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli
• Format: Article
• Language: English; English; English
• Published: American Physical Society 2019
• Subjects: Q Science (General); QC Physics
• Online Access: http://irep.iium.edu.my/71695/1/71695_Search%20for%20pair%20production%20of%20first-generation%20scalar_article.pdf; http://irep.iium.edu.my/71695/2/71695_Search%20for%20pair%20production%20of%20first-generation%20scalar_wos.pdf; http://irep.iium.edu.my/71695/13/71695_Search%20for%20pair%20production%20of%20first-generation%20scalar_scopus.pdf; http://irep.iium.edu.my/71695/; https://journals.aps.org/prd/pdf/10.1103/PhysRevD.99.052002

A search for the pair production of first-generation scalar leptoquarks is performed using proton-proton collision data recorded at 13 TeV center-of-mass energy with the CMS detector at the LHC. The data correspond to an integrated luminosity of 35.9 fb−1. The leptoquarks are assumed to decay promptly to a quark and either an electron or a neutrino, with branching fractions β and 1 − β, respectively. The search targets the decay final states comprising two electrons, or one electron and large missing transverse momentum, along with two quarks that are detected as hadronic jets. First-generation scalar leptoquarks with masses below 1435 (1270) GeV are excluded for β ¼ 1.0ð0.5Þ. These are the most stringent limits on the mass of first-generation scalar leptoquarks to date. The data are also interpreted to set exclusion limits in the context of an R-parity violating supersymmetric model, predicting promptly decaying top squarks with a similar dielectron final state.