Simulation of tau decays, ambiguities and anomalous couplings
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912794053443584 |
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| author | Was, Zbigniew Tapadar, Ananya John, J. M. Banerjee, S. |
| author_facet | Was, Zbigniew Tapadar, Ananya John, J. M. Banerjee, S. |
| contents | From the perspective of low energy tau decays and radiative corrections in decays, not much has changed since the last, Tau23 conference. Also, TAUOLA, tau decay library, and PHOTOS for radiative corrections in decays have not changed much, neither for QED nor for New Physics processes application. Progress was in the domain of flexibilities for applications and in the domain of New Physicists. There was progress with use of exclusive exponentiation (KKMC Monte Carlo) to evaluate quality of tau pair formation and decay factorization, with Collins-Soper and Mustraal frames. Ambiguities for New Physics or other processes could be thus addressed. Associated projects of KKMC f77 and KKMCee C++, are presented: (i) $π^+ π^-$ pair production at Belle II energies, interesting input for Pi_gammagamma(s), (ii) attribution of helicity like labels for taus in simulated HepMC3 format events, (iii) also tau polarimetric vectors prepared for user application of New Physics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2512_23475 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Simulation of tau decays, ambiguities and anomalous couplings Was, Zbigniew Tapadar, Ananya John, J. M. Banerjee, S. High Energy Physics - Phenomenology From the perspective of low energy tau decays and radiative corrections in decays, not much has changed since the last, Tau23 conference. Also, TAUOLA, tau decay library, and PHOTOS for radiative corrections in decays have not changed much, neither for QED nor for New Physics processes application. Progress was in the domain of flexibilities for applications and in the domain of New Physicists. There was progress with use of exclusive exponentiation (KKMC Monte Carlo) to evaluate quality of tau pair formation and decay factorization, with Collins-Soper and Mustraal frames. Ambiguities for New Physics or other processes could be thus addressed. Associated projects of KKMC f77 and KKMCee C++, are presented: (i) $π^+ π^-$ pair production at Belle II energies, interesting input for Pi_gammagamma(s), (ii) attribution of helicity like labels for taus in simulated HepMC3 format events, (iii) also tau polarimetric vectors prepared for user application of New Physics. |
| title | Simulation of tau decays, ambiguities and anomalous couplings |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2512.23475 |