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 =1.0⁢(0.5). 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.

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

Giannini, L.;Ligabue, F.;Manca, E.;Mandorli, G.;Rolandi, G.;
2019

Abstract

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 =1.0⁢(0.5). 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.
File in questo prodotto:
File Dimensione Formato  
PhysRevD.99.052002.pdf

accesso aperto

Tipologia: Published version
Licenza: Creative Commons
Dimensione 4.48 MB
Formato Adobe PDF
4.48 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/79151
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 100
  • ???jsp.display-item.citation.isi??? 36
  • OpenAlex ND
social impact