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We benefit from a recent lattice determination of the full set of vector, axial and tensor form factors for the $\Lambda_b\to \Lambda^*_c(2595)\tau\bar\nu_\tau$ and $\Lambda^*_c(2625)\tau\bar\nu_\tau$ semileptonic decays to study the…

High Energy Physics - Phenomenology · Physics 2022-09-28 Meng-Lin Du , Neus Penalva , Eliecer Hernández , Juan Nieves

A search for flavour-changing neutral current decays of a top quark to an up-type quark ($q=u, c$) and the Standard Model Higgs boson, where the Higgs boson decays to $b\bar{b}$, is presented. The analysis searches for top quark pair events…

High Energy Physics - Experiment · Physics 2015-12-23 ATLAS Collaboration

We investigate the sensitivity of some of the proposed next-generation neutrino experiments to a galactic supernova. In particular, we study how well the supernova parameters (the average energies and luminosities) can be separated from the…

High Energy Physics - Phenomenology · Physics 2010-10-27 Solveig Skadhauge , Renata Zukanovich Funchal

The Large Hadron Collider (LHC), scheduled to start operation in 2006, is foreseen to provide in the first year of running a total of $\sim 10^{12}$ $\tau$ leptons. CMS (Compact Muon Solenoid) is a general-purpose experiment designed to…

High Energy Physics - Experiment · Physics 2009-11-07 R. Santinelli

Recent measurement of a moderately large value of theta13 signifies an important breakthrough in establishing the standard three flavor oscillation picture of neutrinos. It has provided an opportunity to explore the sub-dominant three…

High Energy Physics - Phenomenology · Physics 2015-06-15 Sanjib Kumar Agarwalla , Suprabh Prakash , S. Uma Sankar

We have searched for neutrinoless tau lepton decays into three charged leptons using an 87.1 fb^{-1} data sample collected with the Belle detector at the KEKB e^+e^- collider. Since the number of signal candidate events is compatible with…

High Energy Physics - Experiment · Physics 2019-08-14 Y. Yusa

We perform a quantitative analysis of the nuclear modification factor in deuteron--gold collisions R(dAu) within the Color Glass Condensate approach, and compare our results with the recent data from RHIC experiments. Our model leads to…

High Energy Physics - Phenomenology · Physics 2011-01-25 Dmitri Kharzeev , Yuri V. Kovchegov , Kirill Tuchin

The first search for the Z boson decay to $\tau\tau\mu\mu$ at the CERN LHC is presented, based on data collected by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV and corresponding to an…

High Energy Physics - Experiment · Physics 2024-10-24 CMS Collaboration

The discovery of lepton flavour violating interactions will be striking evidence for physics beyond the Standard Model. Focusing on the three decays $\tau^\mp \to \mu^\pm \mu^\mp \mu^\mp$, $\tau^\mp \to e^\pm \mu^\mp \mu^\mp$ and $\tau^\mp…

High Energy Physics - Phenomenology · Physics 2017-05-09 Chris Hays , Manimala Mitra , Michael Spannowsky , Philip Waite

A study of the charge conjugation and parity ($CP$) properties of the interaction between the Higgs boson and $\tau$-leptons is presented. The study is based on a measurement of $CP$-sensitive angular observables defined by the visible…

High Energy Physics - Experiment · Physics 2023-07-10 ATLAS Collaboration

The prospects of searching for the flavor changing neutral current effect in the decay of $t\to H c, H\to \tau\tau$ are investigated with the simulated $p-p$ collision data for the ATLAS detector at the LHC, where the Higgs mass is assumed…

High Energy Physics - Phenomenology · Physics 2016-06-29 Xin Chen , Li-Gang Xia

This letter documents a search for flavour-changing neutral currents (FCNCs), which are strongly suppressed in the Standard Model, in events with a photon and a top quark with the ATLAS detector. The analysis uses data collected in $pp$…

High Energy Physics - Experiment · Physics 2023-11-14 ATLAS Collaboration

A search for pair production of scalar leptoquarks, each decaying into either an electron or a muon and a top quark, is presented. This is the first leptoquark search using ATLAS data to investigate top-philic cross-generational couplings…

High Energy Physics - Experiment · Physics 2021-04-27 ATLAS Collaboration

Recent global fit analyses of oscillation data show a preference for normal mass ordering (NMO) at 2.5$\sigma$ and provide 1.6$\sigma$ indications for lower $\theta_{23}$ octant and leptonic CP violation. A high-precision measurement of…

High Energy Physics - Phenomenology · Physics 2022-04-20 Sanjib Kumar Agarwalla , Ritam Kundu , Suprabh Prakash , Masoom Singh

Tensions in several phenomenological models grew with experimental results on neutrino/antineutrino oscillations at Short-Baseline (SBL) and with the recent, carefully recomputed, antineutrino fluxes from nuclear reactors. At a refurbished…

We investigate how the data from various future neutrino oscillation experiments will constrain the physics parameters for a three active neutrino mixing model. The investigations properly account for the degeneracies and ambiguities…

High Energy Physics - Experiment · Physics 2009-09-09 Kendall B. M. Mahn , Michael H. Shaevitz

We discuss an experimental technique aimed at tagging electron neutrinos in multi-GeV artificial sources on an event-by-event basis. It exploits in a novel manner calorimetric and tracking technologies developed in the framework of the LHC…

High Energy Physics - Experiment · Physics 2014-11-20 L. Ludovici , F. Terranova

A search for flavour-changing neutral current decays of a top quark into an up-type quark ($q=u, c$) and the Standard Model Higgs boson, $t\rightarrow Hq$, is presented. The search is based on a dataset of $pp$ collisions at $\sqrt{s}=13$…

High Energy Physics - Experiment · Physics 2019-05-29 ATLAS Collaboration

We study the possibility of determining the octant of the neutrino mixing angle $\theta_{23}$, that is, whether $\theta_{23}> 45^\circ$ or $\theta_{23}<45^\circ$, in long baseline neutrino experiments. Here we numerically derived the…

High Energy Physics - Phenomenology · Physics 2018-12-18 C. R. Das , Jukka Maalampi , Joao Pulido , Sampsa Vihonen

Neutrino telescopes provide strong sensitivity to sterile neutrino oscillations through matter-enhanced oscillation, occurring in the few TeV energy range for eV$^{2}$-scale neutrino mass-squared splittings. Prior searches have focused on…

High Energy Physics - Phenomenology · Physics 2022-03-02 Benjamin R. Smithers , Benjamin J. P. Jones , Carlos A. Argüelles , Janet M. Conrad , Alejandro Diaz
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