Amhis, Y. Banerjee, Sw. Ben-Haim, E. Bona, M. Bozek, A. Bozzi, C. Brodzicka, J. Chrzaszcz, M. Dingfelder, J. Egede, U.
...

The Heavy Flavor Averaging Group provides this Letter of Interest (LOI) as input to the Snowmass 2021 Particle Physics Community Planning Exercise organized by the Division of Particles and Fields of the American Physical Society. Research in heavy flavor physics is an essential component of particle physics, both within and beyond the Standard Mod...

Novichkov, P.P. Penedo, J.T. Petcov, S.T.

We study the problem of modulus stabilisation in the framework of the modular symmetry approach to the flavour problem. By analysing simple UV-motivated CP-invariant potentials for the modulus $\tau$ we find that a class of these potentials has (non-fine-tuned) CP-breaking minima in the vicinity of the point of $\mathbb{Z}_3^{ST}$ residual symmetry...

Nortier, Florian

Particle physics models with extra dimensions of space (EDS's) and branes shed new light on naturalness of the electroweak and flavor sectors, with a rich TeV scale phenomenology. Usually, such models are formulated in the framework of local effective field theories. The scope of this article is to propose new model building issues with EDS and bra...

Coquet, Maurice Du, Xiaojian Ollitrault, Jean-Yves Schlichting, Soeren Winn, Michael

The spectrum of dileptons produced by the quark-gluon plasma in an ultrarelativistic nucleus-nucleus collision depends only, to a good approximation, on the transverse mass M_t of the dilepton. This scaling is exact as long as transverse flow is negligible, and the system is in local thermal equilibrium. We implement a state-of-the-art modelization...

Eser, Jürgen Blaizot, Jean-Paul

We present calculations of the $S$-wave isospin-zero and isospin-two pion-pion scattering lengths within a nucleon-meson model with parity doubling. Both scattering lengths are computed in various approximations, ranging from a mean-field (MF) calculation towards the inclusion of loop corrections by means of the functional renormalization group (FR...

Jaffredo, Florentin

We revisit the constraints on semileptonic operators derived from the mono-$\tau$ high-$p_T$ events in $pp$ collisions at LHC. Like in previous studies, we obtain limits on the New Physics couplings from the CMS data much stronger than from the ATLAS data, despite a nearly equal integrated luminosity. We find that a neglected systematics on the $\t...

Abellán, Guillermo F. Chacko, Zackaria Dev, Abhish Du, Peizhi Poulin, Vivian Tsai, Yuhsin

We present cosmological constraints on the sum of neutrino masses as a function of the neutrino lifetime, in a framework in which neutrinos decay into dark radiation after becoming non-relativistic. We find that in this regime the cosmic microwave background (CMB), baryonic acoustic oscillations (BAO) and (uncalibrated) luminosity distance to super...

Monni, Pier Francesco Nason, Paolo Re, Emanuele Wiesemann, Marius Zanderighi, Giulia
Published in
Journal of High Energy Physics

We present a novel method to combine QCD calculations at next-to-next-to-leading order (NNLO) with parton shower (PS) simulations, that can be applied to the production of heavy systems in hadronic collisions, such as colour singlets or a tt¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{am...

Babichev, E. Gorbunov, D. Ramazanov, S. Vikman, A.

Cosmic domain walls are harmless, provided that their tension decreases with expansion of the Universe. This setup can be realized, if the scale of spontaneous symmetry breaking is induced dynamically through the interaction with hot primordial plasma. In that case, the domain wall tension can attain large values in the early Universe without any c...

Athron, Peter Balazs, Csaba Gonzalo, Tomás E. Jacob, Douglas Mahmoudi, Farvah Sierra, Cristian
Published in
Journal of High Energy Physics

We present a likelihood analysis of the general two Higgs doublet model, using the most important currently measured flavour observables, in view of the anomalies in charged current tree-level and neutral current one-loop rare decays of B mesons in b → clν¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts}...