Jul 4 – 11, 2018
Asia/Seoul timezone

Search for first generation scalar leptoquarks in pp collisions at 13 TeV with CMS

Jul 6, 2018, 6:30 PM


Poster Posters POSTER


Muzamil Ahmad Bhat (Tata Inst. of Fundamental Research (IN))


The quark and lepton sectors of the standard model (SM) are strikingly similar in terms of the number of particles and generations. This hints at a fundamental symmetry existing between the two sectors. Indeed, such a symmetry is part of many beyond-the-SM theories such as composite models, technicolor, grand unified SU(5), Pati-Salam SU(4) and E6 superstring-inspired theories. These models give rise to a new class of bosons called leptoquarks (LQs) that carry both baryon and lepton numbers – a signature of their coupling to quarks and leptons. They are colored objects with fractional electric charge, and could be either scalar or vector particles. An LQ decays into a lepton and a quark, giving rise to a final state of high-momentum leptons and jets. We perform a dedicated search for pair-produced first generation scalar leptoquarks, resulting in a final state of two electrons and at least two jets; and one electron, missing transverse energy and at least two jets, using pp collision data taken at centre-of-mass energy of 13 TeV. The data were recorded with the CMS detector during the 2016 running of the LHC, and correspond to an integrated luminosity of 35.9 fb-1.

Primary author

Arnd Meyer (Rheinisch Westfaelische Tech. Hoch. (DE))

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