CERN Accelerating science

CERN Preprints

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2021-07-31
09:42
Collaborative processes in science and literature: an in-depth look at the sases of CERN and SIC / Leogrande, Emilia (CERN) ; Nicassio, Renato (Unlisted, IT)
In this paper we examine how the process of collaboration works in science and literature. [...]
2021. - 11 p.
Fulltext

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2021-07-31
04:08
Latest ALICE results on J/$\psi$ photoproduction in ultra-peripheral collisions at the LHC / Herman, T. (Lund U. ; Prague, Tech. U. ; SUNY, Stony Brook)
Ultra-peripheral collisions (UPCs), studied using the ALICE detector, allow us to investigate the low-$x$ behavior of the gluon distribution of the colliding particles. [...]
arXiv:2107.13284.
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2021-07-31
04:04
Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at $\sqrt{s} = $ 13 TeV / CMS Collaboration
A search for new top quark interactions is performed within the framework of an effective field theory using the associated production of either one or two top quarks with a Z boson in multilepton final states. [...]
arXiv:2107.13896 ; CMS-TOP-21-001 ; CERN-PH-2021-126.
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2021-07-31
04:03
First-Generation New Physics in Simplified Models: From Low-Energy Parity Violation to the LHC / Crivellin, Andreas (Zurich U. ; PSI, Villigen ; CERN) ; Hoferichter, Martin (Bern U. ; U. Bern, AEC) ; Kirk, Matthew (Rome U. ; INFN, Rome) ; Manzari, Claudio Andrea (Zurich U. ; PSI, Villigen) ; Schnell, Luc (Paris, LPTHE ; Zurich, ETH ; Ec. Polytech., Palaiseau (main))
New-physics (NP) constraints on first-generation quark-lepton interactions are particularly interesting given the large number of complementary processes and observables that have been measured. [...]
arXiv:2107.13569 ; CERN-TH-2021-112 ; PSI-21-16 ; ZU-TH 32/21.
- 40 p.

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2021-07-31
04:02
Two-Loop Hexa-Box Integrals for Non-Planar Five-Point One-Mass Processes / Abreu, Samuel (CERN ; UCLA ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Ita, Harald (Freiburg U.) ; Page, Ben (CERN) ; Tschernow, Wladimir (Freiburg U.)
We present the calculation of the three distinct non-planar hexa-box topologies for five-point one-mass processes. [...]
arXiv:2107.14180.
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2021-07-31
04:02
Beam Measurements and Machine Learning at the CERN Large Hadron Collider / Arpaia, P. (Naples U.) ; Azzopardi, G. (CERN) ; Blanc, F. (LPHE, Lausanne) ; Buffat, X. (CERN) ; Coyle, L. (CERN ; LPHE, Lausanne) ; Fol, E. (CERN ; Frankfurt U.) ; Giordano, F. (Naples U. ; CERN) ; Giovannozzi, M. (CERN) ; Pieloni, T. (LPHE, Lausanne) ; Prevete, R. (Naples U.) et al.
This paper presents a review of the recent Machine Learning activities carried out on beam measurements performed at the CERN Large Hadron Collider. [...]
arXiv:2107.12641.
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2021-07-30
16:21
Simultaneous determination of CKM angle $\gamma$ and charm mixing parameters /LHCb Collaboration
A combination of measurements sensitive to the $CP$ violation angle $\gamma$ of the Cabibbo--Kobayashi--Maskawa (CKM) unitarity triangle and to the charm mixing parameters that describe oscillations between $D^0$ and $\overline{D}^0$ mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are included together for the first time. [...]
LHCb-CONF-2021-002; CERN-LHCb-CONF-2021-002.- Geneva : CERN, 2021 - 22. Fulltext: LHCb-CONF-2021-002 - PDF; LHCb-CONF-2021-001-figures - ZIP;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021

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2021-07-29
17:06
Angular analysis of the rare decay $B^0_s \to \phi \mu^+\mu^-$
The abstract for the paper is An angular analysis of the rare decay $B^0_s\rightarrow\phi\mu^+\mu^-$ is presented, using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of $7$, $8$ and $13~\rm{TeV}$, corresponding to an integrated luminosity of 8.4~$\rm{fb}^{-1}$. [...]
CERN-EP-2021-138 ; arXiv:2107.13428 ; LHCB-PAPER-2021-022.
- 2021.
Related data file(s) - Fulltext - Supplementary information

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2021-07-29
16:30
Measurement of prompt charged-particle production in $pp$ collisions at $\sqrt{s} = 13\,\mathrm{TeV}$ / LHCb Collaboration
The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb experiment at a centre-of-mass energy of ${\sqrt{s} = 13\,\mathrm{TeV}}$. [...]
arXiv:2107.10090 ; LHCb-PAPER-2021-010 ; CERN-EP-2021-110 ; LHCB-PAPER-2021-010.
- 2021. - 35 p, 35 p.
Fulltext - Related data file(s) - Supplementary information

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2021-07-29
15:41
Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at $\sqrt{s} = $ 13 TeV
A search for new top quark interactions is performed within the framework of an effective field theory using the associated production of either one or two top quarks with a Z boson in multilepton final states. [...]
CERN-EP-2021-126 ; CMS-TOP-21-001-003.
- 2021.
Additional information for the analysis - CMS AuthorList - Fulltext

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