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2025-04-04
10:35
First observation of the $\phi$ (1020) meson in the $K^+K^-$ mass spectrum of ultra-pheripheral PbPb collisions at forward rapidity /LHCb Collaboration
The first observation of the $\phi(1020)$ meson in the invariant-mass distribution of $K^+K^-$ meson pairs produced in ultra-peripheral PbPb interactions at forward rapidity, in the range 2.0-4.5, is presented. The PbPb data were collected by the LHCb experiment in 2018 at a nucleon-nucleon center-of-mass energy $\sqrt{snn}$=5.02 TeV, and correspond to an integrated luminosity of $228\pm10 \mu b^{-1}$ [...]
LHCb-CONF-2025-001; CERN-LHCb-CONF-2025-001.- Geneva : CERN, 2025 Fulltext: PDF;
In : 31st International Conference on Ultra-relativistic Nucleus-Nucleus Collisions, Frankfurt, De, 6 - 12 Apr 2025

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2025-04-04
04:06
Precision cross-sections for advancing cosmic-ray physics and other applications: a comprehensive programme for the next decade / Maurin, D. (LPSC, Grenoble) ; Audouin, L. (IJCLab, Orsay) ; Berti, E. (INFN, Florence) ; Coppin, P. (U. Geneva (main)) ; Di Mauro, M. (INFN, Turin) ; von Doetinchem, P. (Hawaii U.) ; Donato, F. (INFN, Turin ; Turin U. ; CERN) ; Evoli, C. (GSSI, Aquila ; INFN, LNS) ; Génolini, Y. (Annecy, LAPTH) ; Ghosh, P. (NASA, Goddard) et al.
Cosmic-ray physics in the GeV-to-TeV energy range has entered a precision era thanks to recent data from space-based experiments. [...]
arXiv:2503.16173. - 103.
Fulltext

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2025-04-04
04:06
The Critical Importance of Software for HEP / HEP Software Foundation Collaboration
Particle physics has an ambitious and broad global experimental programme for the coming decades. [...]
arXiv:2504.01050. - 19.
Fulltext

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2025-04-04
04:05
Neutrino Theory in the Precision Era / Abada, Asmaa (IJCLab, Orsay) ; Barenboim, Gabriela (Valencia U. ; Valencia U., IFIC) ; Bertolez-Martınez, Toni (Barcelona U. ; ICC, Barcelona U.) ; Bhattacherjee, Sandipan (Indian Inst. Tech., Madras ; Birla Inst. Technol Mesra) ; Bolognesi, Sara (IRFU, Saclay) ; Bolton, Patrick D. (Stefan Inst., Ljubljana) ; Bostan, Nilay (U. Iowa, Iowa City ; Nuclear Energy Research Institute, Turkey) ; Branco, Gustavo C. (Lisbon, CFTP) ; Chatterjee, Sabya Sachi (KIT, Karlsruhe) ; Cherchiglia, Adriano (Campinas State U.) et al.
This document summarises discussions on future directions in theoretical neutrino physics, which are the outcome of a neutrino theory workshop held at CERN in February 2025. [...]
arXiv:2504.00014. - 13.
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2025-04-04
04:01
Enhancing European Cooperation in the Search for Dark Matter / Andrieu, Bernard (Paris U., VI-VII) ; Behnke, Ties (DESY) ; Bechtle, Philip (Bonn U.) ; Bertou, Xavier (IJCLab, Orsay) ; Busto, Jose (Marseille, CPPM) ; Cebrian, Susana (Zaragoza U.) ; Cirelli, Marco (Paris, LPTHE) ; Derome, Laurent (LPSC, Grenoble) ; Diaconu, Cristinel (Marseille, CPPM) ; Doglioni, Caterina (U. Manchester (main)) et al.
The search for dark matter is an exciting topic that is pursued in different communities over a wide range of masses and using a variety of experimental approaches. [...]
arXiv:2504.01688. - 12.
Fulltext

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2025-04-03
22:18
Combined effective field theory interpretation of Higgs boson, electroweak vector boson, top quark, and multijet measurements
Constraints on Wilson coefficients (WCs) corresponding to dimension-6 operators of the standard model effective field theory (SMEFT) are determined from a simultaneous fit to seven sets of CMS measurements probing Higgs boson, electroweak vector boson, top quark, and multijet production. [...]
CERN-EP-2025-035 ; CMS-SMP-24-003-003. - 2025
Additional information for the analysis - CMS AuthorList - Fulltext

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2025-04-03
17:03
Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in $p$+Pb collisions
This Letter analyzes the sensitivity of event geometry estimators to the initial-state kinematics of hard scattering in proton-lead collisions. [...]
CERN-EP-2025-077. - 2025
Fulltext - Previous draft version

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2025-04-03
13:30
Search for rare muonic B decays at CMS / Szlezak, Klara Emilia (Warsaw U.) /CMS Collaboration
In this paper, we present the search for three highly suppressed Standard Model processes at the CMS experiment: $B^{0} \to \mu^+ \mu^-$, $B_{s}^{0} \to \mu^+ \mu^-$, and $B_{s}^{0} \to \mu^+ \mu^- \gamma$. The latest and most precise results to date are presented for the first two decays, while the feasibility and experimental strategy for the third, yet unobserved at CMS, are discussed. [...]
CMS-CR-2025-098.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 31st Cracow Epiphany Conference on the recent LHC results (Epiphany 2025), Cracow, Poland, 13 - 17 Jan 2025

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2025-04-03
13:30
CMS searches for new physics in the Higgs sector / Szleper, Michal (NCBJ, Swierk) /CMS Collaboration
A summary is presented of CMS searches for new neutral resonances, with main focus on scalars and pseudoscalars, based on data collected during Run 2 of the LHC. Special emphasis is given to the most recent results..
CMS-CR-2025-085.- Geneva : CERN, 2025 - 11 p. Fulltext: PDF;
In : 31st Cracow Epiphany Conference on the recent LHC results (Epiphany 2025), Cracow, Poland, 13 - 17 Jan 2025

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2025-04-03
04:22
Computing and software for LHCb Upgrade II / Vagnoni, Vincenzo ; Marin Benito, Carla
A second major upgrade of the LHCb experiment is necessary to allow full exploitation of the High Luminosity LHC for flavour physics. [...]
arXiv:2503.24106 ; LHCb-PUB-2025-004. - 4.
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