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2025-01-17
06:47
Precision measurements with kaon and pion decays at CERN / Bizzeti, Andrea (Modena U. ; INFN, Florence) /NA48/2 Collaboration ; NA62 Collaboration
The NA62 measurement of the branching ratio and the di-photon mass spectrum of the K+ → π+γγ decay is presented, together with a preliminary result on the branching fraction of the rare decay π0 → e+e−.The first observation of the decay K±→π0π0 μ±v(K00μ4) by the NA48/2 experiment at the CERN is also reported, together with the measurement of the branching ratio..
2024 - 8 p. - Published in : EPJ Web Conf. 314 (2024) 00003 Fulltext: PDF;
In : 11th International Workshop on QCD - Theory and Experiment (QCD@Work 2024), Trani, Italy, 18-21 June 2024, pp.00003

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2025-01-17
06:47
Exploring QGP signature in small system: Insights from ALICE in p–Pb and pp collisions / Patra, Rajendra Nath (INFN, Bari ; Jammu U.) /ALICE Collaboration
The formation of quark-gluon plasma (QGP) has been confirmed in ultra-relativistic heavy-ion (i.e. Pb-Pb) collisions. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 314 (2024) 00039 Fulltext: PDF;
In : 11th International Workshop on QCD - Theory and Experiment (QCD@Work 2024), Trani, Italy, 18-21 June 2024, pp.00039

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2025-01-17
06:47
CMS experimental results / Mukherjee, Maitreyee (Panjab U., Chandigarh) /CMS Collaboration
The main goal of QCD studies is to improve our detailed description of the Standard Model physics. Studies of QCD are key to understand production of all BSM signals and backgrounds at the LHC. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 314 (2024) 00022 Fulltext: PDF;
In : 11th International Workshop on QCD - Theory and Experiment (QCD@Work 2024), Trani, Italy, 18-21 June 2024, pp.00022

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2025-01-17
06:47
Physics programme of ALICE 3: A next-generation heavy-ion detector for LHC Run 5 and beyond / Nicassio, Nicola (INFN, Bari ; Bari U.) /ALICE Collaboration
The ALICE Collaboration is designing a completely new apparatus, ALICE 3, for the LHC Runs 5 and 6. The detector comprises a large pixel-based tracking system covering eight units of pseudorapidity, complemented by various particle identification systems including silicon time-of-flight layers, a ring-imaging Cherenkov detector, a muon identification system, an electromagnetic calorimeter and a forward conversion tracker. [...]
2024 - 6 p. - Published in : EPJ Web Conf. 314 (2024) 00036 Fulltext: PDF;
In : 11th International Workshop on QCD - Theory and Experiment (QCD@Work 2024), Trani, Italy, 18-21 June 2024, pp.00036

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2025-01-17
06:47
Heavy-flavour production as a function of event activity in pp collisions with the ALICE experiment / Gyulai, László (Budapest, Tech. U. ; Wigner RCP, Budapest) /ALICE Collaboration
Due to their large masses, the production of heavy-flavour quarks can be computed perturbatively, thus providing a powerful tool to test the corresponding QCD calculations. Additionally, measurements of heavy-flavour hadrons are useful to reveal the details of heavy-quark fragmentation in pp collisions at LHC energies. [...]
2024 - 7 p. - Published in : EPJ Web Conf. 314 (2024) 00035 Fulltext: PDF;
In : 11th International Workshop on QCD - Theory and Experiment (QCD@Work 2024), Trani, Italy, 18-21 June 2024, pp.00035

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2025-01-15
08:26
Physics beyond the Standard Model with the NA62 experiment at CERN / Peruzzo, Letizia (U. Mainz, PRISMA) /NA62 Collaboration
The NA62 experiment at CERN took data in 2016-2018 with the main goal of measuring the $K^+ \to \pi^+ \nu \bar{\nu}$ decay. The high-intensity setup and detector performance make NA62 particularly suited for searching for new-physics effects from different scenarios involving feebly-interacting particles in the MeV-GeV mass range.A wide spectrum of exotic $K^+$ decays were investigated, resulting in stringent upper limits ($\mathcal{O}(10^{-10} - 10^{-11})$) on the rate of several lepton number and lepton flavor violating processes.Additionally, searches for $K^+ \to \ell^+ N$ were performed, where $N$ is assumed to be a heavy neutral lepton decaying to an invisible final state.The results are expressed as upper limits of $\mathcal{O}(10^{-8})$ of the neutrino mixing parameter $|U_{\ell 4}|^2$.NA62 can also be run as a beam-dump experiment, when the kaon production target is removed and the upstream collimators are moved into a closed position. [...]
2024 - 8 p. - Published in : PoS DISCRETE2022 (2024) 071 Fulltext: PDF;
In : 8th Symposium on Prospects in the Physics of Discrete Symmetries, Baden-baden, Germany, 7 - 11 Nov 2022, pp.071

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2025-01-15
08:26
The NA64-e experiment at CERN / Bisio, Pietro (Genoa U. ; INFN, Genoa) /NA64 Collaboration
One of the most compelling arguments motivating the search for physics beyond the Standard Model (SM) is the need to explain the nature of Dark Matter (DM). Despite an extensive experimental program that combined direct, indirect, and detection at colliders, to date, no conclusive results about DM particle nature have been determined. [...]
2024 - 7 p. - Published in : PoS DISCRETE2022 (2024) 072 Fulltext: PDF;
In : 8th Symposium on Prospects in the Physics of Discrete Symmetries, Baden-baden, Germany, 7 - 11 Nov 2022, pp.072

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2025-01-14
06:59
New measurements of inclusive jet suppression and jet ν2 in Pb–Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV with ALICE / Grünwald, Nadine Alice (Heidelberg U.) /ALICE Collaboration
We report measurements of the inclusive charged-particle jet yield in central Pb–Pb collisions at √SNN = 5.02 TeV. Uncorrelated background is suppressed by a novel mixed-event technique, enabling extension of the jet RAA measurement down to pT = 13.5 GeV/c, with kinematic overlap with RHIC jet measurements. [...]
2024 - 4 p. - Published in : EPJ Web Conf. 296 (2024) 11005 Fulltext: PDF;
In : 30th Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2023), Houston, Texas, United States of America, 3 - 9 Sep 2023, pp.11005

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2025-01-14
06:59
Future facilities and instrumentation / Musa, Luciano (CERN)
Explorations in nuclear physics over the past forty years have significantly advanced our understanding of matter under extreme conditions. Studies at various energy scales, from the AGS to the LHC, have not only confirmed the existence of QGP but also initiated its detailed and meticulous characterization. [...]
2024 - 6 p. - Published in : EPJ Web Conf. 296 (2024) 01033 Fulltext: PDF;
In : 30th Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2023), Houston, Texas, United States of America, 3 - 9 Sep 2023, pp.01033

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2025-01-14
06:59
Understanding the properties of the fireball with the polarization signature of thermal dileptons / Seck, Florian (Darmstadt, Tech. U.) ; Friman, Bengt (Darmstadt, GSI ; Darmstadt, Tech. U.) ; Galatyuk, Tetyana (Darmstadt, GSI ; Darmstadt, Tech. U.) ; van Hees, Hendrik (Frankfurt U. ; Helmholtz Res. Acad. Hesse for FAIR) ; Speranza, Enrico (CERN) ; Rapp, Ralf (Texas A-M) ; Wambach, Jochen (Darmstadt, Tech. U.)
Multi-differential measurements of dilepton spectra serve as a unique tool to characterize the properties of matter in the interior of the hot and dense fireball created in heavy-ion collisions. An important property of virtual photons is their spin polarization defined in the rest frame of the virtual photon with respect to a chosen quantization axis. [...]
2024 - 4 p. - Published in : EPJ Web Conf. 296 (2024) 07009 Fulltext: PDF;
In : 30th Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2023), Houston, Texas, United States of America, 3 - 9 Sep 2023, pp.07009

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