CERN Accelerating science

CERN Preprints

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2021-10-20
04:23
Thin Film (High Temperature) Superconducting Radiofrequency Cavities for the Search of Axion Dark Matter / Golm, J. (CERN) ; Arguedas Cuendis, S.  (CERN) ; Calatroni, S. (CERN) ; Cogollos, C. (ICC, Barcelona U.) ; Döbrich, B. (CERN) ; Gallego, J.D. (Yebes Astron. Ctr.) ; García Barceló, J.M.  (Cartagena Politecnica U.) ; Granados, X. (Barcelona, Autonoma U.) ; Gutierrez, J. (Barcelona, Autonoma U.) ; Irastorza, I.G. (Zaragoza U.) et al.
The axion is a hypothetical particle which is a candidate for cold dark matter. [...]
arXiv:2110.01296.
- 5 p.
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2021-10-20
04:20
Tests of lepton universality using $B^0\to K^0_S l^+ l^-$ and $B^+\to K^{*+}\ell^+\ell^-$ decays / LHCb Collaboration
Tests of lepton universality in $B^0\to K^0_S l^+ l^-$ and $B^+\to K^{*+}\ell^+\ell^-$ decays where $l$ is either an electron or a muon are presented. [...]
arXiv:2110.09501 ; CERN-EP-2021-208 LHCb-PAPER-2021-038.
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2021-10-20
04:14
Account of baryonic feedback effect in the $\gamma$-ray measurements of intergalactic magnetic fields / Bondarenko, Kyrylo (CERN ; Ecole Polytechnique, Lausanne) ; Boyarsky, Alexey (Leiden U.) ; Korochkin, Alexander (APC, Paris ; Moscow, INR ; Novosibirsk State U.) ; Neronov, Andrii (APC, Paris ; U. Geneva (main)) ; Semikoz, Dmitri (APC, Paris ; Moscow, INR ; Moscow Phys. Eng. Inst.) ; Sokolenko, Anastasia (OAW, Vienna)
Intergalactic magnetic fields in the voids of the large-scale structure can be probed via measurements of secondary gamma-ray emission from gamma-ray interactions with extragalactic background light. [...]
arXiv:2106.02690.
- 8 p.
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2021-10-20
04:13
Improving Variational Autoencoders for New Physics Detection at the LHC with Normalizing Flows / Jawahar, Pratik (CERN) ; Aarrestad, Thea (CERN) ; Pierini, Maurizio (CERN) ; Wozniak, Kinga A. (CERN) ; Ngadiuba, Jennifer (Fermilab) ; Duarte, Javier (UC, San Diego) ; Tsan, Steven (UC, San Diego)
We investigate how to improve new physics detection strategies exploiting variational autoencoders and normalizing flows for anomaly detection at the Large Hadron Collider. [...]
arXiv:2110.08508.
- 3 p.
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2021-10-18
13:10
Search for massive long-lived particles decaying semileptonically at $\sqrt{s}=13$ TeV / LHCb Collaboration
A search is performed for massive long-lived particles (LLP) decaying semileptonically into a muon and two quarks. [...]
arXiv:2110.07293 ; LHCb-PAPER-2021-028 ; CERN-EP-2021-186 ; LHCB-PAPER-2021-028.
- 2021.
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2021-10-16
04:31
Sparse Data Generation for Particle-Based Simulation of Hadronic Jets in the LHC / Orzari, Breno (SPRACE) ; Tomei, Thiago (SPRACE) ; Pierini, Maurizio (CERN) ; Touranakou, Mary (CERN ; Athens Natl. Capodistrian U.) ; Duarte, Javier (UC, San Diego (main)) ; Kansal, Raghav (UC, San Diego (main)) ; Vlimant, Jean-Roch (Caltech, Pasadena (main)) ; Gunopulos, Dimitrios (Athens Natl. Capodistrian U.)
We develop a generative neural network for the generation of sparse data in particle physics using a permutation-invariant and physics-informed loss function. [...]
arXiv:2109.15197.
- 4 p.
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2021-10-16
04:27
Leading-Color Two-Loop Amplitudes for Four Partons and a W Boson in QCD / Abreu, S. (CERN ; U. Edinburgh, Higgs Ctr. Theor. Phys. ; UCLA) ; Cordero, F. Febres ; Ita, H. ; Klinkert, M. ; Page, B. (CERN) ; Sotnikov, V. (Munich, Max Planck Inst.)
We present the leading-color two-loop QCD corrections for the scattering of four partons and a $W$ boson, including its leptonic decay. [...]
arXiv:2110.07541 ; CERN-TH-2021-156 ; FR-PHENO-2021-12 ; MPP-2021-181.
- 31 p.
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2021-10-16
04:22
Multinucleon excitations in neutrino-nucleus scattering: connecting different microscopic models for the correlations / Chanfray, G. (IP2I, Lyon) ; Ericson, M. (IP2I, Lyon ; CERN) ; Martini, M. (IPSA, Paris ; Paris U., VI-VII)
The problem of nucleon-nucleon correlations and meson exchange currents has been vividly debated in connection with the neutrino-nucleus cross sections. [...]
arXiv:2109.13550.
- 34 p.
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2021-10-16
04:12
Gegenbauer Goldstones / Durieux, Gauthier (CERN) ; McCullough, Matthew (CERN) ; Salvioni, Ennio (CERN ; U. Padua, Dept. Phys. Astron. ; INFN, Padua)
We investigate radiatively stable classes of pseudo-Nambu-Goldstone boson (pNGB) potentials for approximate spontaneously broken $\mathrm{SO}(N+1)\to\mathrm{SO}(N)$. [...]
arXiv:2110.06941 ; CERN-TH-2021-141.
- 20 p.
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2021-10-16
04:08
Style-based quantum generative adversarial networks for Monte Carlo events / Bravo-Prieto, Carlos (ICC, Barcelona U. ; Singapore Natl. U.) ; Baglio, Julien (CERN) ; Cè, Marco (CERN) ; Francis, Anthony (CERN ; Taiwan, Natl. Chiao Tung U.) ; Grabowska, Dorota M. (CERN) ; Carrazza, Stefano (ICC, Barcelona U. ; Singapore Natl. U. ; CERN ; Milan U. ; INFN, Milan)
We propose and assess an alternative quantum generator architecture in the context of generative adversarial learning for Monte Carlo event generation, used to simulate particle physics processes at the Large Hadron Collider (LHC). [...]
arXiv:2110.06933 ; CERN-TH-2021-139 ; TIF-UNIMI-2021-14.
- 14 p.
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