The production cross-section of high-mass τ-lepton pairs is measured as a function of the dilepton visible invariant mass, using 140 fb−1 of root s = 13 TeV proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider. The measurement agrees with the predictions of the Standard Model. A fit to the invariant mass distribution is performed as a function of b-jet multiplicity, to constrain the non-resonant production of new particles described by an effective field theory or in models containing leptoquarks or Z′ bosons that couple preferentially to third-generation fermions. The constraints on new particles improve on previous results, and the constraints on effective operators include those affecting the anomalous magnetic moment of the τ-lepton.

Null, N., Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., et al. (2025). A measurement of the high-mass $$ \tau \overline{\tau} $$ production cross-section at $$ \sqrt{s}=13 $$ TeV with the ATLAS detector and constraints on new particles and couplings. JOURNAL OF HIGH ENERGY PHYSICS, 2025(10) [10.1007/jhep10(2025)054].

A measurement of the high-mass $$ \tau \overline{\tau} $$ production cross-section at $$ \sqrt{s}=13 $$ TeV with the ATLAS detector and constraints on new particles and couplings

Aielli, G.;Camarri, P.;Cerrito, L.;De Sanctis, U.;Di Ciaccio, A.;Giuli, F.;
2025-01-01

Abstract

The production cross-section of high-mass τ-lepton pairs is measured as a function of the dilepton visible invariant mass, using 140 fb−1 of root s = 13 TeV proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider. The measurement agrees with the predictions of the Standard Model. A fit to the invariant mass distribution is performed as a function of b-jet multiplicity, to constrain the non-resonant production of new particles described by an effective field theory or in models containing leptoquarks or Z′ bosons that couple preferentially to third-generation fermions. The constraints on new particles improve on previous results, and the constraints on effective operators include those affecting the anomalous magnetic moment of the τ-lepton.
2025
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
English
Con Impact Factor ISI
Null, N., Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., et al. (2025). A measurement of the high-mass $$ \tau \overline{\tau} $$ production cross-section at $$ \sqrt{s}=13 $$ TeV with the ATLAS detector and constraints on new particles and couplings. JOURNAL OF HIGH ENERGY PHYSICS, 2025(10) [10.1007/jhep10(2025)054].
Null, N; Aad, G; Aakvaag, E; Abbott, B; Abdelhameed, S; Abeling, K; Abicht, Nj; Abidi, Sh; Aboelela, M; Aboulhorma, A; Abramowicz, H; Abulaiti, Y; Ach...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/434664
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