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 | 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.



