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The structure of the form factors stemmed from the hadronization of QCD currents in the energy region of the resonances can be explored through the analyses of exclusive hadronic decays of the tau lepton. I give a short review on the later…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Portoles

This paper presents a new method of reconstructing the individual charged and neutral hadrons in tau decays with the ATLAS detector. The reconstructed hadrons are used to classify the decay mode and to calculate the visible four-momentum of…

High Energy Physics - Experiment · Physics 2016-06-02 ATLAS Collaboration

We compute branching ratios and invariant mass distributions of the tau decays into four pions. The hadronic matrix elements are obtained by starting from the structure of the hadronic current in chiral limit and then implementing low-lying…

High Energy Physics - Phenomenology · Physics 2009-09-25 R. Decker , M. Finkemeier , P. Heiliger , H. H. Jonsson

We perform a global analysis of exclusive hadronic tau decays into one and two mesons using the low-energy limit of the Standard Model Effective Field Theory up to dimension six, assuming left-handed neutrinos. A controlled theoretical…

High Energy Physics - Phenomenology · Physics 2020-03-24 Sergi Gonzàlez-Solís , Alejandro Miranda , Javier Rendón , Pablo Roig

We present a Monte Carlo event generator specifically developed for the study of hadronic two-photon fusion events in two-photon scattering at electron-positron colliders. The code enables the generation of events with exact leading-order…

High Energy Physics - Phenomenology · Physics 2025-11-18 Max Lellmann , Igor Danilkin , Achim Denig , Jan Muskalla , Christoph F. Redmer , Xiu-Lei Ren , Marc Vanderhaeghen

The TauSpinner algorithm allows to modify the physics of the Monte Carlo generated samples due to the changed assumptions of event production dynamics, without re-generating events. To each event it attributes weights: the spin effects of…

High Energy Physics - Phenomenology · Physics 2016-11-03 J. Kalinowski , W. Kotlarski , E. Richter-Was , Z. Was

The present status of the physics program, which led to the development of the Monte Carlo event generator PHOKHARA is described. The possibility of using the radiative return method in various aspects of hadronic physics, from the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Henryk Czyz , Agnieszka Grzelinska , Agnieszka Wapienik

We give a pedagogical introduction to the rich phenomenology of hadronic tau decays. These decays provide a unique window into the interplay of electroweak and strong interactions at low energies, as they occur primarily via $W$ exchange…

High Energy Physics - Phenomenology · Physics 2025-05-01 Antonio Rodríguez-Sánchez

We analyze the sensitivity of hadronic tau decays to non-standard interactions within the model-independent framework of the Standard Model Effective Field Theory (SMEFT). Both exclusive and inclusive decays are studied, using the latest…

High Energy Physics - Phenomenology · Physics 2019-06-14 Vincenzo Cirigliano , Adam Falkowski , Martín González-Alonso , Antonio Rodríguez-Sánchez

The pure leptonic or semileptonic character of tau decays makes them a good laboratory to test the structure of the weak currents and the universality of their couplings to the gauge bosons. The hadronic tau decay modes constitute an ideal…

High Energy Physics - Phenomenology · Physics 2016-11-03 A. Pich

I very briefly review the highlights of the fifth workshop on the physics of the tau lepton and its neutrino. There has been much progress in many sub-fields, which I touch upon in this review: the couplings of the tau to the $Z^0$ and…

High Energy Physics - Experiment · Physics 2009-10-31 Alan J. Weinstein

The identification of hadronic tau lepton decays is an important requirement for the LHC physics program, both in terms of standard model measurements and the search for beyond-the-standard-model physics. The ATLAS and CMS algorithms for…

High Energy Physics - Experiment · Physics 2017-09-06 Martin Flechl

The article describes the identification of hadronically decaying tau leptons in ppbar collisions at 1.96 TeV collected by the DZero detector at the Fermilab Tevatron. After a brief description of the motivations and the challenges of…

High Energy Physics - Experiment · Physics 2019-08-14 Romain Madar

The ATLAS experiment at the Large Hadron Collider (LHC) has been able to collect 5.25 fb-1 of data in 2011. For many physics analyses both in context of the Standard Model (SM) and Beyond the Standard Model (BSM) theories such as Higgs…

High Energy Physics - Experiment · Physics 2015-06-03 Marcus M. Morgenstern

Semileptonic $\tau$ decays mainly proceed via interactions between charged lepton and quark currents. The hadronization of the quark current is intrinsically nonperturbative and generally cannot be addressed analytically. In these…

High Energy Physics - Phenomenology · Physics 2026-04-06 E. Estrada , E. Passemar , S. Paz , A. Rodríguez-Sánchez , P. Roig

This paper describes the trigger and offline reconstruction, identification and energy calibration algorithms for hadronic decays of tau leptons employed for the data collected from $pp$ collisions in 2012 with the ATLAS detector at the LHC…

High Energy Physics - Experiment · Physics 2015-07-16 ATLAS Collaboration

The pure leptonic or semileptonic character of tau decays makes them a good laboratory to test the structure of the weak currents and the universality of their couplings to the gauge bosons. The hadronic $\tau$ decay modes constitute an…

High Energy Physics - Phenomenology · Physics 2011-04-15 A. Pich

Tau leptons play an important role in the physics program in ATLAS. They can be used not only in searches for new phenomena like the Higgs boson or Supersymmetry, or for electroweak measurements but also in detector related studies like the…

High Energy Physics - Experiment · Physics 2019-08-13 Stan Lai

We study two and three meson decays of the tau lepton within the framework of the Resonance Chiral Theory, that is based on the following properties of QCD: its chiral symmetry in the massless case, its large-N_C limit, and the asymptotic…

High Energy Physics - Phenomenology · Physics 2009-08-04 P. Roig

This paper describes the algorithms used by the CMS experiment to reconstruct and identify tau to hadrons + tau neutrino decays during Run 1 of the LHC. The performance of the algorithms is studied in proton-proton collisions recorded at a…

Instrumentation and Detectors · Physics 2016-02-22 CMS Collaboration