Search for a singly produced third-generation scalar leptoquark decaying to a $\tau$ lepton and a bottom quark in proton-proton collisions at $\sqrt{s} =$ 13 TeV

A search is presented for a singly produced third-generation scalar leptoquark decaying to a τ lepton and a bottom quark. Associated production of a leptoquark and a τ lepton is considered, leading to a final state with a bottom quark and two τ leptons. The search uses proton-proton collision data at a center-of-mass energy of 13 TeV recorded with the CMS detector, corresponding to an integrated luminosity of 35.9 fb

^{−1}

. Upper limits are set at 95% confidence level on the production cross section of the third-generation scalar leptoquarks as a function of their mass. From a comparison of the results with the theoretical predictions, a third-generation scalar leptoquark decaying to a τ lepton and a bottom quark, assuming unit Yukawa coupling (λ), is excluded for masses below 740 GeV. Limits are also set on λ of the hypothesized leptoquark as a function of its mass. Above λ = 1.4, this result provides the best upper limit on the mass of a third-generation scalar leptoquark decaying to a τ lepton and a bottom quark.

Note:

Corrected a formatting error in the author list of the XML file. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-17-029 (CMS Public Pages) •
Submitted to JHEP

Beyond Standard Model
Hadron-Hadron scattering (experiments)
p p: colliding beams
single production
leptoquark: scalar
family: 3
p p: scattering
leptoquark: associated production
tau: pair production
coupling: Yukawa

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Search for a singly produced third-generation scalar leptoquark decaying to a τ\tauτ lepton and a bottom quark in proton-proton collisions at s=\sqrt{s} =s​= 13 TeV

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Search for a singly produced third-generation scalar leptoquark decaying to a $\tau$ lepton and a bottom quark in proton-proton collisions at $\sqrt{s} =$ 13 TeV