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CERN Preprints

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2022-10-03
18:08
The CMS Pixel Detector for the High Luminosity LHC / Cassese, Antonio (INFN, Florence) /CMS Collaboration
The LHC machine will be upgraded to increase its peak luminosity to $5\mbox{--}7.5\times10^{34}$ cm$^{-2}$s$^{-1}$ and to possibly reach an integrated luminosity of $3000\mbox{--}4000\;$fb$^{-1}$, with an average number of pileup events of $140\mbox{--}200$. The CMS experiment needs to be upgraded to keep up with the new challenges: the unprecedented radiation environment translates to the detector requirement of high resilience, while the increased number of events per bunch crossing requires higher detector granularity. Thus a completely new Inner Tracker will be installed. Design choices for the Inner Tracker Phase-2 upgrade, highlighting R\&D; activities and technological approaches, will be presented..
CMS-CR-2022-154.- Geneva : CERN, 2022 - 8 p. Fulltext: PDF;
In : 23rd International Workshop for Radiation Imaging Detectors, Riva Del Garda, It, 26 - 30 Jun 2022

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2022-10-03
18:05
Heavy-ion physics with CMS detector / Petrushanko, Sergey (Moscow State U.) /CMS Collaboration
We present a selection of very recent results by the CMS collaboration on heavy-ion physics at the LHC (CERN)..
CMS-CR-2022-150.- Geneva : CERN, 2022 - 16 p. Fulltext: PDF;
In : 72nd International Meeting on Nuclear Spectroscopy and Nuclear Structure : Fundamental problems and applications (Nucleus-2022), Moscow, Russia, 11 - 16 Jul 2022

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2022-10-03
04:09
On the polarization of the non-prompt contribution to inclusive J/$\psi$ production in pp collisions / Faccioli, Pietro (LIP, Lisbon) ; Lourenço, Carlos (CERN)
Of the J/$\psi$ mesons (inclusively) produced in pp collisions, a big fraction results from B decays, increasing with transverse momentum and exceeding 50% for $p_{\rm T} > 20$ GeV. [...]
arXiv:2206.14686.
- 27 p.
Fulltext

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2022-10-01
04:47
Defect characterization studies on neutron irradiated boron-doped silicon pad diodes and Low Gain Avalanche Detectors / Himmerlich, Anja (CERN) ; Castello-Mor, Nuria (CERN) ; Rivera, Esteban Curras (CERN) ; Gurimskaya, Yana (CERN) ; Maulerova-Subert, Vendula (CERN ; Hamburg U.) ; Moll, Michael (CERN) ; Pintilie, Ioana (Bucharest U.) ; Fretwurst, Eckhart (Hamburg U.) ; Liao, Chuan (Hamburg U.) ; Schwandt, Jorn (Hamburg U.)
High-energy physics detectors, like Low Gain Avalanche Detectors (LGADs) that will be used as fast timing detectors in the High Luminosity LHC experiments, have to exhibit a significant radiation tolerance. [...]
arXiv:2209.07186.
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Fulltext

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2022-09-30
12:19
A search for new resonances in multiple final states with a high transverse momentum $Z$ boson in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
A generic search for resonances is performed with events containing a $Z$ boson with transverse momentum greater than 100 GeV, decaying into $e^+e^-$ or $\mu^+\mu^-$. [...]
CERN-EP-2022-180.
- 2022.
Fulltext - Previous draft version

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2022-09-30
11:53
Measurement of the polarisation of $W$ bosons produced in top-quark decays using dilepton events at $\sqrt{s} = 13$ TeV with the ATLAS experiment
A measurement of the polarisation of $W$ bosons produced in top-quark decays is presented, using proton-proton collision data at a centre-of-mass energy of $\sqrt{s} = 13$ TeV. [...]
CERN-EP-2022-197 ; arXiv:2209.14903.
- 2022. - 21 p.
Fulltext - Previous draft version - Fulltext

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2022-09-30
11:02
CERN Open Science Policy
This document defines the CERN Open Science policy. [...]
CERN-OPEN-2022-013.
- 2022. - 4 p.
Preprint

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2022-09-30
07:47
Search for Gravitational Waves Associated with Fast Radio Bursts Detected by CHIME/FRB During the LIGO--Virgo Observing Run O3a / LIGO Scientific Collaboration
We search for gravitational-wave transients associated with fast radio bursts (FRBs) detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project (CHIME/FRB), during the first part of the third observing run of Advanced LIGO and Advanced Virgo (1 April 2019 15:00 UTC-1 Oct 2019 15:00 UTC). [...]
arXiv:2203.12038 ; P2100124.
- 35 p.
Fulltext

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2022-09-30
04:18
Determination of $\alpha_s(m_Z)$ by the non-perturbative decoupling method / Dalla Brida, Mattia (CERN) ; Höllwieser, Roman (Wuppertal U.) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) ; Nada, Alessandro (Turin U.) ; Ramos, Alberto (Valencia U., IFIC) ; Sint, Stefan (Hamilton Math. Inst., Dublin) ; Sommer, Rainer (Humboldt U., Berlin)
We present the details and first results of a new strategy for the determination of $\alpha_s(m_Z)$. [...]
IFIC/22-25 ; WUB/22-00 ; DESY-22-051 ; CERN-TH-2022-015 ; HU-EP-22/04 ; arXiv:2209.14204.
- 62 p.
Fulltext

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2022-09-30
04:18
Medium-enhanced $c\bar{c}$ radiation / Attems, Maximilian (CERN) ; Brewer, Jasmine (CERN) ; Innocenti, Gian Michele (CERN) ; Mazeliauskas, Aleksas (CERN) ; Park, Sohyun (CERN) ; van der Schee, Wilke (CERN) ; Wiedemann, Urs (CERN)
We show that the same QCD formalism that accounts for the suppression of high-$p_T$ hadron and jet spectra in heavy-ion collisions predicts medium-enhanced production of $c\bar{c}$ pairs in jets..
CERN-TH-2022-046 ; arXiv:2209.13600.
- 5 p.
Fulltext

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