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2020-05-26
09:05
Search for Higgs boson decays into two new low-mass spin-0 particles in the 4$b$ channel with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into $b$-quark pairs, $H \rightarrow aa \rightarrow (b\bar{b})(b\bar{b})$, using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider at center-of-mass energy $\sqrt{s}=13$ TeV. [...]
CERN-EP-2020-067.
- 2020.
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2020-05-26
06:40
Instrumentation for high-resolution laser spectroscopy at the ALTO radioactive-beam facility / Yordanov, D.T. (Orsay, IPN) ; Atanasov, D. (CERN) ; Bissell, M.L. (Manchester U.) ; Franchoo, S. (Orsay, IPN) ; Georgiev, G. (CSNSM, Orsay) ; Kanellakopoulos, A. (Leuven U.) ; Lechner, S. (CERN ; TU Vienna) ; Ramirez, E. Minaya (Orsay, IPN) ; Nichita, D. (Bucharest, IFIN-HH ; Bucharest, Polytechnic Inst.) ; Rodríguez, L.V. (Heidelberg, Max Planck Inst.) et al.
Collinear laser spectroscopy is one of the essential tools for nuclear-structure studies. [...]
arXiv:2005.03007.
- 4 p.
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2020-05-23
04:11
LISA Sensitivity to Gravitational Waves from Sound Waves / Schmitz, Kai
Gravitational waves (GWs) produced by sound waves in the primordial plasma during a strong first-order phase transition in the early Universe are going to be a main target of the upcoming Laser Interferometer Space Antenna (LISA) experiment. [...]
arXiv:2005.10789 ; CERN-TH-2020-079.
- 16 p.
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2020-05-23
04:11
Measurement of the branching fractions for $B^+\to D^{*+}D^-K^+$, $B^+\to D^{*-}D^+K^+$, and $B^0\to D^{*-}D^0K^+$ decays / LHCb Collaboration
A measurement of four branching-fraction ratios for three-body decays of $B$ mesons involving two open-charm hadrons in the final state is presented. [...]
arXiv:2005.10264 ; LHCb-PAPER-2020-006; CERN-EP-2020-056.
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2020-05-23
04:10
Mixed QCD-electroweak corrections to on-shell Z production at the LHC / Buccioni, Federico ; Caola, Fabrizio ; Delto, Maximilian ; Jaquier, Matthieu ; Melnikov, Kirill ; Röntsch, Raoul
We present the first complete calculation of mixed QCD-electroweak corrections to the production of on-shell $Z$ bosons in hadron collisions and their decays to massless charged leptons. [...]
arXiv:2005.10221 ; OUTP-20-04P,TTP20-021 ; P3H-20-019 ; CERN-TH-2020-072.
- 6 p.
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2020-05-23
04:10
Effects of the electronic threshold on the performance of the RPC system of the CMS experiment / Elmetenawee, W.
Resistive Plate Chambers have a very important role for muon triggering both in the barrel and in the endcap regions of the CMS experiment at the Large Hadron Collider (LHC). [...]
arXiv:2005.09472.
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2020-05-21
10:23
Search for heavy neutral lepton production in $K^+$ decays to positrons / NA62 Collaboration
A search for heavy neutral lepton ($N$) production in $K^+\to e^+N$ decays using the data sample collected by the NA62 experiment at CERN in 2017--2018 is reported. [...]
CERN-EP-2020-089 ; arXiv:2005.09575.
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2020-05-21
10:23
Performance and aging studies for the ALICE muon RPCs / Quaglia, Luca (INFN, Turin ; Turin U.) ; Bianchi, Antonio (INFN, Turin ; Turin U.) ; Ferretti, Alessandro (INFN, Turin ; Turin U.) ; Gagliardi, Martino (INFN, Turin ; Turin U.) ; Stocco, Diego (SUBATECH, Nantes) ; Guida, Roberto (CERN) ; Mandelli, Beatrice (CERN) ; Alvigini, Laura (IUSS, Pavia)
The ALICE muon trigger (MTR) system consists of 72 Resistive Plate Chamber (RPC) detectors arranged in two stations, each composed of two planes with 18 RPCs per plane. [...]
arXiv:2005.00286.
- 8 p.
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2020-05-21
10:23
Phase Transitions of Quintessential AdS Black Holes in M-theory/Superstring Inspired Models / Belhaj, A. (Mohammed V U., Agdal) ; Balali, A. El (Mohammed V U., Agdal) ; Hadri, W. El (Mohammed V U., Agdal) ; Hassouni, Y. (Mohammed V U., Agdal) ; Torrente-Lujan, E. (Murcia U. ; CERN)
We study $d$-dimensional $AdS$ black holes surrounded by Dark Energy (DE), embedded in $D$-dimensional M-theory/superstring inspired models having $AdS_d \times \mathbb{S}^{d+k}$ space-time with $D=2d+k$. [...]
arXiv:2004.10647 ; FISPAC-TH/20-31415 ; UQBAR-TH/20-27182.
- 39 p.
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2020-05-20
08:15
Performance of the missing transverse momentum triggers for the ATLAS detector during Run-2 data taking / ATLAS Collaboration
The factor of four increase in the LHC luminosity, from $0.5\times 10^{34}\,\textrm{cm}^{-2}\textrm{s}^{-1}$ to $2.0\times 10^{34}\textrm{cm}^{-2}\textrm{s}^{-1}$, and the corresponding increase in pile-up collisions during the 2015-2018 data-taking period, presented a challenge for ATLAS to trigger on missing transverse momentum. [...]
arXiv:2005.09554 ; CERN-EP-2020-050.
- 2020. - 53 p.
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