# Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in \sqrts = 13 TeV pp collisions with the ATLAS detector

Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Fehr, Armin; Beck, Hans Peter; Ereditato, Antonio; Chatterjee, Meghranjana; Lehmann, Niklaus; Miucci, Antonio; Weston, Thomas Daniel (2020). Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in \sqrts = 13 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics, 2020(10) Springer 10.1007/JHEP10(2020)112

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A search for new-physics resonances decaying into a lepton and a jet performed by the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at s√

= 13 TeV at the Large Hadron Collider are considered using an integrated luminosity of 139 fb−1, corresponding to the full Run 2 dataset. They are searched for in events with two electrons or two muons and two or more jets, including jets identified as arising from the fragmentation of c- or b-quarks. The observed yield in each channel is consistent with the Standard Model background expectation. Leptoquarks with masses below 1.8 TeV and 1.7 TeV are excluded in the electron and muon channels, respectively, assuming a branching ratio into a charged lepton and a quark of 100%, with minimal dependence on the quark flavour. Upper limits on the aforementioned branching ratio are also given as a function of the leptoquark mass.

#### Item Type:

Journal Article (Original Article)

#### Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)
08 Faculty of Science > Physics Institute

#### UniBE Contributor:

Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Fehr, Armin; Beck, Hans Peter; Ereditato, Antonio; Chatterjee, Meghranjana; Lehmann, Niklaus; Miucci, Antonio and Weston, Thomas Daniel

#### Subjects:

500 Science > 530 Physics

1029-8479

Springer

English

#### Submitter:

BORIS Import LHEP

#### Date Deposited:

20 Apr 2021 16:45

25 Apr 2021 03:07

#### Publisher DOI:

10.1007/JHEP10(2020)112

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

10.48350/155556

#### URI:

https://boris.unibe.ch/id/eprint/155556