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2019-02-23
05:01
High precision determination of $\alpha_s$ from a global fit of jet rates / Verbytskyi, Andrii ; Banfi, Andrea ; Kardos, Adam ; Monni, Pier Francesco ; Kluth, Stefan ; Somogyi, Gábor ; Szőr, Zoltán ; Trócsányi, Zoltán ; Tulipánt, Zoltán ; Zanderighi, Giulia
We present state-of-the-art extractions of the strong coupling based on N$^3$LO+NNLL accurate predictions for the two-jet rate in the Durham clustering algorithm at $e^+e^-$ collisions, as well as a simultaneous fit of the two- and three-jet rates taking into account correlations between the two observables. [...]
MPP-2019-37 ; CERN-TH-2019-015 ; MITP/19-012 ; arXiv:1902.08158. - 36 p.
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2019-02-23
05:01
Two-loop splitting in double parton distributions / Diehl, Markus ; Gaunt, Jonathan R. ; Ploessl, Peter ; Schafer, Andreas
Double parton distributions (DPDs) receive a short-distance contribution from a single parton splitting to yield the two observed partons. [...]
arXiv:1902.08019 ; DESY 19-024 ; CERN-TH-2019-013. - 56 p.
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2019-02-23
05:01
Non-singular black holes interiors need physics beyond the standard model / Brustein, Ram ; Medved, A.J.M.
The composition as well as the very existence of the interior of a Schwarzschild black hole (BH) remains at the forefront of open problems in fundamental physics. [...]
CERN-TH-2019-017 ; arXiv:1902.07990. -
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2019-02-22
13:40
Amplitude analysis of $B^{0}_{s} \rightarrow K^{0}_{\textrm{S}} K^{\pm}\pi^{\mp}$ decays / LHCb Collaboration
The first untagged decay-time-integrated amplitude analysis of $B^{0}_{s} \rightarrow K^{0}_{\textrm{S}} K^{\pm}\pi^{\mp}$ decays is performed using a sample corresponding to $3.0\,$fb$^{-1}$ of $pp$ collision data recorded with the LHCb detector during 2011 and 2012. [...]
arXiv:1902.07955 ; LHCb-PAPER-2018-045 ; CERN-EP-2019-017 ; LHCB-PAPER-2018-045. - 2019. - 27 p, 27 p.
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2019-02-22
05:07
Tracks of hadronic showers in the CALICE Si-W ECAL physics prototype / CALICE Collaboration
A detailed investigation of hadronic interactions is performed using $\pi^-$ data with energies in the range 2-10 GeV, recorded at FNAL in 2008, incident on a high granularity silicon-tungsten electromagnetic calorimeter. [...]
arXiv:1902.06161 ; CALICE-PUB-2019-002. - 21 p.
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2019-02-22
05:07
Performance of alternative scintillator tile geometry for AHCAL / Tsuji, Naoki
The CALICE Analogue Hadron CALorimeter (AHCAL) at the International Linear Collider (ILC) is a high-granularity hadron calorimeter based on scintillator tiles readout by MPPCs. [...]
arXiv:1902.05266. - 3 p.
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2019-02-22
05:07
Bibliometrics for collaboration works / Rossi, Paolo (Pisa U.) ; Strumia, Alessandro (Pisa U.) ; Torre, Riccardo (CERN ; INFN, Genoa)
An important issue in bibliometrics is the weighting of co-authorship in the production of scientific collaborations, which are becoming the standard modality of research activity in many disciplines. [...]
arXiv:1902.01693. - 9 p.
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2019-02-22
05:06
Towards an Advanced Linear International Collider / ALEGRO Collaboration
This document provides detailed information on the status of Advanced and Novel Accelerators techniques and describes the steps that need to be envisaged for their implementation in future accelerators, in particular for high energy physics applications. [...]
arXiv:1901.10370. - 83 p.
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2019-02-21
16:48
Searches for third-generation scalar leptoquarks in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
Limits are set on the pair production of scalar leptoquarks, where all possible decays of the leptoquark into a quark ($t$, $b$) and a lepton ($\tau$, $\nu$) of the third generation are considered. [...]
arXiv:1902.08103 ; CERN-EP-2019-026. - 2019. - 48 p, 48 p.
Fulltext - Previous draft version - Fulltext

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2019-02-20
06:32
Irradiation studies of a multi-doped Gd$_3$Al$_2$Ga$_3$O$_{12}$ scintillator / Alenkov, V (Unlisted, RU) ; Buzanov, O (Unlisted, RU) ; Dosovitskiy, G (Kurchatov Inst., Moscow) ; Egorychev, V (Moscow, ITEP) ; Fedorov, A (Minsk, Inst. Nucl. Problems) ; Golutvin, A (Natl. U. Sci. Tech., Moscow ; Imperial Coll., London) ; Guz, Yu (Serpukhov, IHEP) ; Jacobsson, R (CERN) ; Korjik, M (Kurchatov Inst., Moscow ; Minsk, Inst. Nucl. Problems) ; Kozlov, D (Minsk, Inst. Nucl. Problems) et al.
The characteristics of a Gd$_3$Al$_2$Ga$_3$O$_{12}$ crystal scintillator doped with cerium and co-doped with magnesium and titanium have been studied, mainly in view of using it for the Phase II upgrade of the LHCb electromagnetic calorimeter. [...]
2018. - 4 p.

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