Publications

Order by: publication date number of citations

Exclusive electro-weak production of a charmed meson at high energy

B. Pire, L. Szymanowski, J. Wagner

SciPost Phys. Proc. 8, 150 (2022) · published 14 July 2022 | · pdf

Exclusive electro-weak processes have peculiar features which make them complementary to usually discussed deeply virtual electroproduction processes such as deep virtual Compton scattering or meson production (and the corresponding crossed reactions). They allow in particular single charmed meson production, which we study in two different contexts : electroproduction at an electron ion collider and neutrino-production at a medium energy neutrino facility. We rely on the QCD collinear factorization framework where generalized parton distributions allow physicists to perform a nucleon tomography.
New perspectives in gravity-mediated supersymmetry breaking

Robin Ducrocq

SciPost Phys. Proc. 14, 027 (2023) · published 24 November 2023 | · pdf

New solutions in supersymmetry breaking through gravity mediation have been recently discovered. Such solutions have interesting properties regarding renormalisation and introduce new contributions in the scalar potential that may help to resolve some issues of the Standard Model. The purpose of this article is to investigate the consequences of these new structures. We construct a model related to these new solutions, the S2MSSM, and present some preliminary results on the effects of these new contributions, especially on the Standard Model's Higgs boson mass.
An algebraic approach to intertwined quantum phase transitions in the Zr isotopes

Noam Gavrielov

SciPost Phys. Proc. 14, 028 (2023) · published 24 November 2023 | · pdf

The algebraic framework of the interacting boson model with configuration mixing is employed to demonstrate the occurrence of intertwined quantum phase transitions (IQPTs) in the $_{40}$Zr isotopes with neutron number 52-70. The detailed quantum and classical analyses reveal a QPT of crossing normal and intruder configurations superimposed on a QPT of the intruder configuration from U(5) to SU(3) and a crossover from SU(3) to SO(6) dynamical symmetries.
Centrality dependence of multistrange baryon production in high-energy heavy-ion collisions

Gevorg H. Arakelyan, Carlos Merino, Yuli M. Shabelski

SciPost Phys. Proc. 15, 024 (2024) · published 3 April 2024 | · pdf

We consider the experimental data on the production of strange $\Lambda^{\prime}$s, and multistrange baryons ($\Xi$, $\Omega$), and antibaryons, on nuclear targets, at the energy region from SPS up to LHC, in the framework of the Quark-Gluon String Model. One remarkable result of this analysis is the significant dependence on the centrality of the collision of the experimental $\overline{\Xi}^+/\overline{\Lambda}$ and $\overline{\Omega}^+/\overline{\Lambda}$ ratios in heavy-ion collisions, at SPS energies.
Precision physics with the proton spectrometer and diffractive physics measurements from CMS

Cristophe Royon

SciPost Phys. Proc. 15, 030 (2024) · published 3 April 2024 | · pdf

We describe recent results from CMS and TOTEM on hard diffraction, diffractive jets and jet gap jet events. We also give the first sensitivities and limits on quartic anomalous couplings and axion-like particles at high mass using the LHC as a $\gamma \gamma$ collider. The predicted sensitivities with 300 fb$^{-1}$ are better by two or three orders of magnitude compared to the more standard methods at the LHC without measuring intact protons after collision.
SO(1,3) Yang-Mills solutions on Minkowski space via cosets

Kaushlendra Kumar

SciPost Phys. Proc. 14, 033 (2023) · published 24 November 2023 | · pdf

We present a novel family of Yang-Mills solutions, with gauge group SO(1,3), on Minkowski space that are geometrically distinguished into two classes, viz. interior and exterior of the lightcone. We achieve this by foliating the former with SO(1,3)/SO(3) cosets and the latter with SO(1,3)/SO(1,2) cosets and analytically solving the Yang-Mills equation of an SO(1,3)-invariant gauge field. The resulting fields and their stress-energy tensor, when translated to the Minkowski space, diverge at the lightcone, but we demonstrate how this stress-energy tensor could be regularised due to its unique algebraic structure.
Development of the ATLAS Liquid Argon Calorimeter Readout Electronics for the HL-LHC

Mathis Kolb

SciPost Phys. Proc. 8, 158 (2022) · published 14 July 2022 | · pdf

The full ATLAS Liquid Argon Calorimeter electronic readout chain will be upgraded for the high-luminosity LHC. The upgrade is designed to withstand the expected radiation level and to be compatible with the Phase-I Digital Trigger System which is being installed right now. Analogue electronics shape and amplify the calorimeter signals before they are digitized with 16 bit dynamic range on two gain scales. The on-detector system samples the calorimeter cell signals at 40 MHz and sends them to the off-detector electronics which apply digital processing based on FPGAs. Design studies and tests of prototypes of the upgraded components are present
Properties of non-relativistic string theory

E.A. Bergshoeff, J. Lahnsteiner, L. Romano, C. Simsek

SciPost Phys. Proc. 4, 001 (2021) · published 13 August 2021 | · pdf

We show how Newton-Cartan geometry can be generalized to String Newton-Cartan geometry which is the geometry underlying non-relativistic string theory. Several salient properties of non-relativistic string theory in this geometric background are presented and a discussion of possible research for the future is outlined.
Vinberg's T-algebras: From exceptional periodicity to black hole entropy

Alessio Marrani

SciPost Phys. Proc. 14, 035 (2023) · published 24 November 2023 | · pdf

We introduce the so-called Magic Star (MS) projection within the root lattice of finite-dimensional exceptional Lie algebras, and relate it to rank-3 simple and semi-simple Jordan algebras. By relying on the Bott periodicity of reality and conjugacy properties of spinor representations, we present the so-called Exceptional Periodicity (EP) algebras, which are finite-dimensional algebras, violating the Jacobi identity, and providing an alternative with respect to Kac-Moody infinite-dimensional Lie algebras. Remarkably, also EP algebras can be characterized in terms of a MS projection, exploiting special Vinberg T-algebras, a class of generalized Hermitian matrix algebras introduced by Vinberg in the '60s within his theory of homogeneous convex cones. As physical applications, we highlight the role of the invariant norm of special Vinberg T-algebras in Maxwell-Einstein-scalar theories in 5 space-time dimensions, in which the Bekenstein-Hawking entropy of extremal black strings can be expressed in terms of the cubic polynomial norm of the T-algebras.
A general approach to noncommutative spaces from Poisson homogeneous spaces: Applications to (A)dS and Poincaré

Angel Ballesteros, Ivan Guitérrez-Sagredo, Francisco J. Herranz

SciPost Phys. Proc. 14, 017 (2023) · published 23 November 2023 | · pdf

In this contribution we present a general procedure that allows the construction of noncommutative spaces with quantum group invariance as the quantization of their associated coisotropic Poisson homogeneous spaces coming from a coboundary Lie bialgebra structure. The approach is illustrated by obtaining in an explicit form several noncommutative spaces from (3+1)D (A)dS and Poincaré coisotropic Lie bialgebras. In particular, we review the construction of the $\kappa$-Minkowski and $\kappa$-(A)dS spacetimes in terms of the cosmological constant L. Furthermore, we present all noncommutative Minkowski and (A)dS spacetimes that preserve a quantum Lorentz subgroup. Finally, it is also shown that the same setting can be used to construct the three possible 6D $\kappa$-Poincaré spaces of time-like worldlines. Some open problems are also addressed.

Previous 1 ... 26 27 28 29 30 31 32 33 34 35 36 ... 67 Next