Search for scalar leptoquarks produced in lepton-quark collisions and coupled to $\tau$ leptons

The CMS collaboration
Phys.Rev.Lett. 132 (2024) 061801, 2024.

Abstract
The first search for scalar leptoquarks produced in $\tau$-lepton-quark collisions is presented. It is based on a set of proton-proton collision data recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 138 fb$^{-1}$. The reconstructed final state consists of a jet, significant missing transverse momentum, and a $\tau$ lepton reconstructed through its hadronic or leptonic decays. Limits are set on the product of the leptoquark production cross section and branching fraction and interpreted as exclusions in the plane of the leptoquark mass and the leptoquark-$\tau$-quark coupling strength.

  • Figure 1

    Data from Figure 2 (upper left).

    10.17182/hepdata.141335.v1/t1

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet btag category with the BDT requirements selecting the most...

  • Figure 2

    Data from Figure 2 (upper center).

    10.17182/hepdata.141335.v1/t2

    Observed and expected distributions of the collinear mass in the e+jet btag category with the BDT requirements selecting the most...

  • Figure 3

    Data from Figure 2 (upper right).

    10.17182/hepdata.141335.v1/t3

    Observed and expected distributions of the collinear mass in the $\mu$+jet btag category with the BDT requirements selecting the most...

  • Figure 4

    Data from Figure 2 (lower left).

    10.17182/hepdata.141335.v1/t4

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet no-btag category with the BDT requirements selecting the most...

  • Figure 5

    Data from Figure 2 (lower center).

    10.17182/hepdata.141335.v1/t5

    Observed and expected distributions of the collinear mass in the e+jet no-btag category with the BDT requirements selecting the most...

  • Figure 6

    Data from Figure 2 (lower right).

    10.17182/hepdata.141335.v1/t6

    Observed and expected distributions of the collinear mass in the $\mu$+jet no-btag category with the BDT requirements selecting the most...

  • Figure 7

    Data from Figure 3 (left).

    10.17182/hepdata.141335.v1/t7

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 8

    Data from Figure 3 (right).

    10.17182/hepdata.141335.v1/t8

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 9

    Data from Figure 4 (left).

    10.17182/hepdata.141335.v1/t9

    Expected upper limit at 95% CL on the coupling strength $\lambda$ of a scalar LQ to b quarks and $\tau$...

  • Figure 10

    Data from Figure 4 (right).

    10.17182/hepdata.141335.v1/t10

    Expected upper limit at 95% CL on the coupling strength $\lambda$ of a scalar LQ to light-flavor quarks and $\tau$...

  • Figure 11

    Data from supplementary material, Figure 1.

    10.17182/hepdata.141335.v1/t11

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet btag category with the lowest BDT requirement. The signal...

  • Figure 12

    Data from supplementary material, Figure 2.

    10.17182/hepdata.141335.v1/t12

    Observed and expected distributions of the collinear mass in the e+jet btag category with the lowest BDT requirement. The signal...

  • Figure 13

    Data from supplementary material, Figure 3.

    10.17182/hepdata.141335.v1/t13

    Observed and expected distributions of the collinear mass in the $\mu$+jet btag category with the lowest BDT requirement. The signal...

  • Figure 14

    Data from supplementary material, Figure 4.

    10.17182/hepdata.141335.v1/t14

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet btag category with the intermediate BDT requirement. The signal...

  • Figure 15

    Data from supplementary material, Figure 5.

    10.17182/hepdata.141335.v1/t15

    Observed and expected distributions of the collinear mass in the e+jet btag category with intermediate BDT requirement. The signal hypothesis...

  • Figure 16

    Data from supplementary material, Figure 6.

    10.17182/hepdata.141335.v1/t16

    Observed and expected distributions of the collinear mass in the $\mu$+jet btag category with intermediate BDT requirement. The signal hypothesis...

  • Figure 17

    Data from supplementary material, Figure 7.

    10.17182/hepdata.141335.v1/t17

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet no-btag category with the lowest BDT requirement. The signal...

  • Figure 18

    Data from supplementary material, Figure 8.

    10.17182/hepdata.141335.v1/t18

    Observed and expected distributions of the collinear mass in the e+jet no-btag category with the lowest BDT requirement. The signal...

  • Figure 19

    Data from supplementary material, Figure 9.

    10.17182/hepdata.141335.v1/t19

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet btag category with the lowest BDT requirement. The signal...

  • Figure 20

    Data from supplementary material, Figure 10.

    10.17182/hepdata.141335.v1/t20

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet no-btag category with low BDT requirement. The signal hypothesis...

  • Figure 21

    Data from supplementary material, Figure 11.

    10.17182/hepdata.141335.v1/t21

    Observed and expected distributions of the collinear mass in the e+jet no-btag category with low BDT requirement. The signal hypothesis...

  • Figure 22

    Data from supplementary material, Figure 12.

    10.17182/hepdata.141335.v1/t22

    Observed and expected distributions of the collinear mass in the $\mu$+jet no-btag category with low BDT requirement. The signal hypothesis...

  • Figure 23

    Data from supplementary material, Figure 13.

    10.17182/hepdata.141335.v1/t23

    Observed and expected distributions of the collinear mass in the $\tau_\mathrm{h}$+jet no-btag category with intermediate BDT requirement. The signal hypothesis...

  • Figure 24

    Data from supplementary material, Figure 14.

    10.17182/hepdata.141335.v1/t24

    Observed and expected distributions of the collinear mass in the e+jet btag category with intermediate BDT requirement. The signal hypothesis...

  • Figure 25

    Data from supplementary material, Figure 15.

    10.17182/hepdata.141335.v1/t25

    Observed and expected distributions of the collinear mass in the $\mu$+jet no-btag category with intermediate BDT requirement. The signal hypothesis...

  • Figure 26

    Data from supplementary material, Figure 16.

    10.17182/hepdata.141335.v1/t26

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 27

    Data from supplementary material, Figure 17.

    10.17182/hepdata.141335.v1/t27

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 28

    Data from supplementary material, Figure 18.

    10.17182/hepdata.141335.v1/t28

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 29

    Data from supplementary material, Figure 19.

    10.17182/hepdata.141335.v1/t29

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 30

    Data from supplementary material, Figure 20.

    10.17182/hepdata.141335.v1/t30

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 31

    Data from supplementary material, Figure 21.

    10.17182/hepdata.141335.v1/t31

    Expected and observed upper limits at 95% CL on the scalar lepton-induced LQ production cross section times branching fraction for...

  • Figure 32

    Data from supplementary material, Figure 22.

    10.17182/hepdata.141335.v1/t32

    Observed and expected distributions of the jet multiplicity in the e+jet btag control region.

  • Figure 33

    Data from supplementary material, Figure 23.

    10.17182/hepdata.141335.v1/t33

    Observed and expected distributions of the jet multiplicity in the $\mu$+jet btag control region.

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