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CERN Accelerating science

CERN Preprints

Latest additions:
2021-04-09
04:02
The Eikonal Approach to Gravitational Scattering and Radiation at $\mathcal O(G^3)$ / Di Vecchia, Paolo (Bohr Inst. ; Nordita ; Royal Inst. Tech., Stockholm) ; Heissenberg, Carlo (Nordita ; Royal Inst. Tech., Stockholm ; Uppsala U.) ; Russo, Rodolfo (Queen Mary, U. of London) ; Veneziano, Gabriele (CERN ; College de France)
Using $\mathcal N=8$ supergravity as a theoretical laboratory, we extract the 3PM gravitational eikonal for two colliding massive scalars from the classical limit of the corresponding elastic two-loop amplitude. [...]
CERN-TH-2021-046 ; NORDITA 2021-028 ; QMUL-PH-21-17 ; arXiv:2104.03256.
- 88 p.
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2021-04-09
04:00
Parton distributions in the SMEFT from high-energy Drell-Yan tails / Greljo, Admir (U. Bern, AEC ; CERN) ; Iranipour, Shayan (Cambridge U., DAMTP) ; Kassabov, Zahari (Cambridge U., DAMTP) ; Madigan, Maeve (Cambridge U., DAMTP) ; Moore, James (Cambridge U., DAMTP) ; Rojo, Juan (Vrije U., Amsterdam ; NIKHEF, Amsterdam) ; Ubiali, Maria (Cambridge U., DAMTP) ; Voisey, Cameron (Cambridge U.)
The high-energy tails of charged- and neutral-current Drell-Yan processes provide important constraints on the light quark and anti-quark parton distribution functions (PDFs) in the large-x region. [...]
arXiv:2104.02723 ; Cavendish-HEP-21/06 ; Nikhef-2020-040.
- 64 p.
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2021-04-09
04:00
Consequences of chirally enhanced explanations of $(g-2)_\mu$ for $h\to \mu\mu$ and $Z\to \mu\mu$ / Crivellin, Andreas (CERN ; PSI, Villigen ; Zurich U.) ; Hoferichter, Martin (U. Bern, AEC)
With the long-standing tension between experiment and Standard-Model (SM) prediction in the anomalous magnetic moment of the muon $a_\mu$ recently reaffirmed by the Fermilab experiment, the crucial question becomes which other observables could be sensitive to the underlying physics beyond the SM to which $a_\mu$ may be pointing. [...]
arXiv:2104.03202 ; CERN-TH-2021-050 ; PSI-PR-21-04 ; ZU-TH 14/21.
- 10 p.
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2021-04-09
04:00
Jet Transport Coefficient at the Large Hadron Collider Energies in a Color String Percolation Approach / Nath, Aditya (Wigner RCP, Budapest) ; Sahu, Dushmanta (Indian Inst. Tech., Kanpur) ; Sahoo, Raghunath (Indian Inst. Tech., Kanpur ; CERN)
Within the color string percolation model (CSPM), jet transport coefficient, $\hat{q}$, is calculated for various multiplicity classes in proton-proton and for centrality classes in nucleus-nucleus collisions at the Large Hadron Collider energies for a better understanding of the matter formed in ultra-relativistic collisions. [...]
arXiv:2104.02328.
- 8 p.
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2021-04-09
04:00
Hadronic light-by-light contribution to $(g-2)_\mu$ from lattice QCD: a complete calculation / Chao, En-Hung (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Hudspith, Renwick J. (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Gérardin, Antoine (Marseille, CPT) ; Green, Jeremy R. (CERN) ; Meyer, Harvey B. (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Ottnad, Konstantin (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA)
We compute the hadronic light-by-light scattering contribution to the muon $g-2$ from the up, down, and strange-quark sector directly using lattice QCD. [...]
arXiv:2104.02632.
- 42 p.
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2021-04-09
04:00
Novel Leptoquark Pair Production at LHC / Doršner, Ilja (Split Tech. U. ; CERN) ; Fajfer, Svjetlana (Stefan Inst., Ljubljana ; Ljubljana U.) ; Lejlić, Ajla (Zagreb U.)
We introduce a novel mechanism for the leptoquark pair production at LHC that is of a $t$-channel topology and is quark-quark initiated. [...]
arXiv:2103.11702.
- 14 p.

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2021-04-08
06:43
$|V_{cs(d)}|$ measurements and LFU tests in charm leptonic decays / Ma, Hailong (Beijing, Inst. High Energy Phys.)
BESIII collected 2.93 fb$^{−1}$, 0.482 fb$^{−1}$, 3.19 fb$^{−1}$, and 0.567 fb$^{−1}$ of data samples at the center of-mass energies $\sqrt{s}$ = 3.773, 4.009, 4.178, and 4.6 GeV, respectively. [...]
2019. - 6 p.

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2021-04-08
04:16
Mitigating baryonic effects with a theoretical error covariance / Moreira, Maria G. (Sao Paulo, IFT ; LIneA, Rio de Janeiro) ; Andrade-Oliveira, Felipe (Sao Paulo, IFT ; LIneA, Rio de Janeiro) ; Fang, Xiao (Arizona U., Astron. Dept. - Steward Observ.) ; Huang, Hung-Jin (Arizona U., Astron. Dept. - Steward Observ.) ; Krause, Elisabeth (Arizona U., Astron. Dept. - Steward Observ. ; Arizona U.) ; Miranda, Vivian (Arizona U., Astron. Dept. - Steward Observ.) ; Rosenfeld, Rogerio (Sao Paulo, IFT ; LIneA, Rio de Janeiro ; ICTP-SAIFR, Sao Paulo) ; Simonović, Marko (CERN)
One of the primary sources of uncertainties in modeling the cosmic-shear power spectrum on small scales is the effect of baryonic physics. [...]
arXiv:2104.01397.
- 10 p.
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2021-04-08
04:15
Dual-Parameterized Quantum Circuit GAN Model in High Energy Physics / Chang, Su Yeon (CERN ; CERN ; Ecole Polytechnique, Lausanne) ; Herbert, Steven (Sentec Ltd., Cambridge ; Cambridge U.) ; Vallecorsa, Sofia (CERN) ; Combarro, Elías F. (Oviedo U.) ; Duncan, Ross (Sentec Ltd., Cambridge ; Strathclyde U. ; University Coll. London)
Generative models, and Generative Adversarial Networks (GAN) in particular, are being studied as possible alternatives to Monte Carlo simulations. [...]
arXiv:2103.15470.
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2021-04-08
04:15
Double-crystal measurements at the CERN SPS / Scandale, W. (CERN ; Imperial Coll., London ; INFN, Rome) ; Arduini, G. (CERN) ; Cerutti, F. (CERN) ; D'Andrea, M. (CERN ; Padua U.) ; Esposito, L.S. (CERN) ; Garattini, M. (CERN ; Imperial Coll., London) ; Gilardoni, S. (CERN) ; Mirarchi, D. (CERN ; Manchester U.) ; Montesano, S. (CERN) ; Natochii, A. (CERN ; IJCLab, Orsay ; Taras Shevchenko U.) et al.
The UA9 setup, installed in the Super Proton Synchrotron (SPS) at CERN, was exploited for a proof of principle of the double-crystal scenario, proposed to measure the electric and the magnetic moments of short-lived baryons in a high-energy hadron collider, such as the Large Hadron Collider (LHC). [...]
arXiv:2103.14681.
- 25 p.
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