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2024-07-02
18:09
Results and Perspectives on Multi-Parton Interactions with CMS / Ascioti, Maria Elena (INFN, Perugia ; Perugia U.) /CMS Collaboration
This contribution covers recent CMS experiment studies at the LHC, including the first direct observation of Double Parton Scattering (DPS) in same-sign WW boson production at $\sqrt{s} = 13$ TeV. Interest in DPS has shifted to flavour physics due to higher production cross-sections and better detector performance, enabling CMS to rival experiments like LHCb. [...]
CMS-CR-2024-105.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 20th Incontri di Fisica delle Alte Energie (IFAE 2024), Florence, Itlay, 3 - 5 Apr 2024

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2024-07-02
07:03
Design of a Radiation-Tolerant Bandgap Voltage Reference for HEP applications / Traversi, Gianluca (Bergamo U., Ingengneria Dept. ; INFN, Pavia) ; Gaioni, Luigi (Bergamo U., Ingengneria Dept. ; INFN, Pavia) ; Ballabriga, Rafael (CERN) ; Ceresa, Davide (CERN) ; Michelis, Stefano (CERN)
This work discusses the design of a bandgap voltage reference circuit to be operated in harsh radiation environments. [...]
2022. - 3 p.

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2024-07-02
04:38
Nonleptonic $B$-meson decays to next-to-next-to-leading order / Egner, Manuel ; Fael, Matteo (CERN) ; Schönwald, Kay (Zurich U.) ; Steinhauser, Matthias
We compute next-to-next-to-leading order QCD corrections to the partonic processes $b\to c \bar{u} d$ and $b\to c \bar{c} s$, which constitute the dominant decay channels in standard model predictions for $B$-meson lifetimes within the heavy quark expansion. [...]
CERN-TH-2024-089 ; P3H-24-041 ; TTP24-020 ; ZU-TH 30/24 ; arXiv:2406.19456. - 39 p.
Fulltext

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2024-07-02
04:38
Observation of strong wavelength-shifting in the argon-tetrafluoromethane system / Amedo, P. (Santiago de Compostela U., IGFAE) ; González-Día, D. (Santiago de Compostela U., IGFAE) ; Brunbauer, F.M. (CERN) ; Fernández-Posada, D.J. (Santiago de Compostela U., IGFAE) ; Oliveri, E. (CERN) ; Ropelewski, L. (CERN)
We report the scintillation spectra of Ar-CF$_4$ mixtures in the range 210-800~nm, obtained under X-ray irradiation for various pressures (1-5~bar) and concentrations (0-100%). [...]
arXiv:2306.09919. - 27 p.
Fulltext

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2024-07-01
22:13
Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into $b\bar{b}\tau^+\tau^-$ using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, $H\rightarrow aa$, where one pseudoscalar decays into a $b$-quark pair and the other decays into a $\tau$-lepton pair, in the mass range $12\leq m_{a}\leq 60$ GeV. [...]
CERN-EP-2024-164. - 2024.
Fulltext - Previous draft version

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2024-07-01
15:49
First results on the final readout chip for the High-Luminosity LHC upgrade of the CMS Inner Tracker / Grippo, Michael (INFN, Turin ; Turin U.) ; Bartosik, Nazar (INFN, Turin) ; Demaria, Natale (INFN, Turin) ; Luongo, Fabio (INFN, Turin ; Turin U.)
The CMS Readout Chip (CROC) is a 65 nm CMOS hybrid pixel readout chip for the High-Luminosity LHC upgrade of the CMS Inner Tracker. The chip has been developed by the CERN RD53 Collaboration in order to withstand radiation doses up 10 MGy and hit rates up to 3 GHz cm$^{-2}$ at pileup 200 on the innermost tracking layer. [...]
CMS-CR-2024-114.- Geneva : CERN, 2024 - 3 p. Fulltext: PDF;
In : 16th Pisa Meeting on Advanced Detectors, La Biodola, Isola D'elba, It, 26 May - 1 Jun 2024

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2024-07-01
15:49
Measurement of the differential Higgs boson production cross sections in ATLAS and CMS experiments / Mohammadi, Abdollah (Wisconsin U., Madison) /ATLAS and CMS Collaborations
A comprehensive set of studies has been conducted to measure the fiducial differential cross sections of Higgs boson production by the ATLAS and CMS experiments. These analyses are based on proton-proton collision data collected by both experiments at the CERN LHC, with a center-of-mass energy of 13 TeV. [...]
CMS-CR-2024-112.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : 58th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 24 - 31 Mar 2024

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2024-07-01
15:49
Performance of planar pixel modules for the CMS Phase-2 Inner Tracker / Raciti, Bianca (Hamburg U.) /CMS Collaboration
During the Long Shutdown 3, the CMS pixel detector will be replaced to operate during the High Luminosity LHC \mbox{(HL-LHC)} running phase. Hybrid pixel modules of the new tracking detector will have to fulfill stringent requirements to operate in an extremely harsh radiation environment and cope with the high data readout rate. [...]
CMS-CR-2024-106.- Geneva : CERN, 2024 - 3 p. Fulltext: PDF;
In : 16th Pisa Meeting on Advanced Detectors, La Biodola, Isola D'elba, It, 26 May - 1 Jun 2024

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2024-06-30
17:55
Measurement of differential cross-sections in $t\bar t$ and $t\bar t+$jets production in the lepton+jets final state in $pp$ collisions at $\sqrt s=13$ TeV using 140 fb$^{-1}$ of ATLAS data / ATLAS Collaboration
Differential cross-sections for top-quark pair production, inclusively and in association with jets, are measured in $pp$ collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 140 fb$^{-1}$. [...]
arXiv:2406.19701 ; CERN-EP-2024-163. - 2024. - 85 p, 85 p.
Fulltext - Previous draft version - Fulltext

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2024-06-29
04:53
Light and strange vector resonances from lattice QCD at physical quark masses / Boyle, Peter (Brookhaven ; Edinburgh U.) ; Erben, Felix (Edinburgh U. ; CERN) ; Gülpers, Vera (Edinburgh U.) ; Hansen, Maxwell T. (Edinburgh U.) ; Joswig, Fabian (Edinburgh U.) ; Lachini, Nelson Pitanga (Edinburgh U. ; Cambridge U., DAMTP) ; Marshall, Michael (Edinburgh U.) ; Portelli, Antonin (Edinburgh U. ; CERN ; RIKEN AICS, Kobe)
We present the first ab initio calculation at physical quark masses of scattering amplitudes describing the lightest pseudoscalar mesons interacting via the strong force in the vector channel. [...]
CERN-TH-2024-088 ; arXiv:2406.19194. -
Fulltext

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