A measurement of the high-mass ττ¯ production cross-section at s=13 TeV with the ATLAS detector and constraints on new particles and couplings


Aad G., Aakvaag E., Abbott B., Abdelhameed S., Abeling K., Abicht N., ...daha çox

Journal of High Energy Physics, vol.2025, no.10, 2025 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 2025 Say: 10
  • Nəşr tarixi: 2025
  • Doi nömrəsi: 10.1007/jhep10(2025)054
  • jurnalın adı: Journal of High Energy Physics
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC, MathSciNet, zbMATH, Directory of Open Access Journals, Nature Index
  • Açar sözlər: Beyond Standard Model, Hadron-Hadron Scattering
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

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 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.