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新增：
2021-11-29
04:01
Mounting Evidence for the Violation of Lepton Flavor Universality / Crivellin, Andreas (Zurich U. ; PSI, Villigen ; CERN) ; Hoferichter, Martin (Bern U.)
The Standard Model (SM) of particle physics was finalized in its current form in the mid-1970s, and has been extensively tested and confirmed ever since, with the discovery of the Higgs boson in 2012 being the last missing piece. While no new particles have been directly discovered at the Large Hadron Collider (LHC) at CERN so far, precision observables sensitive to quantum effects of new particles have accumulated intriguing hints for physics beyond the SM. [...]
arXiv:2111.12739; CERN-TH-2021-193; PSI-PR-21-26; ZU-TH 55/21.- 2021-11-24 - 7 p. - Published in : Science 374 (2021) 1051 Fulltext: PDF;

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2021-11-27
04:34
Probing multi-particle unitarity with the Landau equations / Correia, Miguel ; Sever, Amit ; Zhiboedov, Alexander
We consider the $2\to 2$ scattering amplitude of identical massive particles. [...]
arXiv:2111.12100 ; CERN-TH-2021-197. - 9 p.
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2021-11-27
04:24
General Analytical Conditions for Inflaton Fragmentation: Quick and Easy Tests for its Occurrence / Kim, Jinsu (CERN) ; McDonald, John (Lancaster U.)
Understanding the physics of inflaton condensate fragmentation in the early Universe is crucial as the existence of fragments in the form of non-topological solitons (oscillons or Q-balls) may potentially modify the evolution of the post-inflation Universe. [...]
arXiv:2111.12474 ; CERN-TH-2021-202. - 9 p.
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2021-11-24
04:21
Master-field simulations of QCD / Fritzsch, P. ; Bulava, J. ; Cè, M. ; Francis, A. ; Lüscher, M. ; Rago, A.
We report on the first master-field simulations of QCD with 2+1 dynamical quark flavours using non-perturbatively improved stabilised Wilson fermions. [...]
arXiv:2111.11544 ; CERN-TH-2021-198. - 9 p.
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2021-11-24
04:18
Likelihood analysis of the flavour anomalies and $g-2$ in the general two Higgs doublet model / Athron, Peter (Nanjing Normal U. ; Monash U.) ; Balazs, Csaba ; Gonzalo, Tomás E. ; Jacob, Douglas ; Mahmoudi, Farvah ; Sierra, Cristian
We present a likelihood analysis of the general two Higgs doublet model, using the most important currently measured flavour observables, in view of the anomalies in charged current tree-level and neutral current one-loop rare decays of $B$ mesons in $b\to c l \overline{\nu}$ and $b\to s\mu^{+}\mu^{-}$ transitions, respectively. [...]
arXiv:2111.10464 ; CERN-TH-2021-194 ; TTK-21-47. - 49 p.
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2021-11-22
08:11
MicroBooNE and the $\nu_e$ Interpretation of the MiniBooNE Low-Energy Excess / Argüelles, C.A. (Harvard U.) ; Esteban, I. (Ohio State U., CCAPP ; Ohio State U.) ; Hostert, M. (Cambridge U., DAMTP ; Perimeter Inst. Theor. Phys. ; Minnesota U. ; Minnesota U., Theor. Phys. Inst.) ; Kelly, K.J. (CERN) ; Kopp, J. (CERN ; Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Machado, P.A.N. (Fermilab) ; Martinez-Soler, I. (Harvard U.) ; Perez-Gonzalez, Y.F. (Durham U., IPPP)
A new generation of neutrino experiments is testing the $4.7\sigma$ anomalous excess of electron-like events observed in MiniBooNE. [...]
arXiv:2111.10359 ; CERN-TH-2021-195 ; FERMILAB-PUB-21-618-T ; IPPP/21/50 ; FTPI-MINN-21-23. - 2 p.
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2021-11-20
04:04
FLAG Review 2021 / Aoki, Y. (RIKEN AICS, Kobe) ; Blum, T. (Connecticut U. ; RIKEN BNL) ; Colangelo, G. (U. Bern, AEC) ; Collins, S. (Regensburg U.) ; Della Morte, M. (Southern Denmark U., CP3-Origins) ; Dimopoulos, P. (INFN, Parma ; Parma U.) ; Dürr, S. (Wuppertal U. ; IAS, Julich) ; Feng, X. (Peking U., Beijing) ; Fukaya, H. (Osaka U.) ; Golterman, M. (San Francisco State U.) et al.
We review lattice results related to pion, kaon, $D$-meson, $B$-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities. [...]
arXiv:2111.09849 ; CERN-TH-2021-191 ; JLAB-THY-21-3528 ; FERMILAB-PUB-21-620-SCD-T. - 418 p.
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2021-11-17
06:21
Vacuum correlators at short distances from lattice QCD / Harris, Tim ; Cè, Marco ; Meyer, Harvey B. ; Toniato, Arianna ; Török, Csaba
We propose a method to help control cutoff effects in the short-distance contribution to integrated correlation functions, such as the hadronic vacuum polarization (HVP), using the corresponding screening correlators computed at finite temperature. The strategy is investigated with Wilson fermions at leading order, which reveals a logarithmically-enhanced lattice artifact in the short-distance contribution, whose coefficient is determined at this order. [...]
arXiv:2111.07948; CERN-TH-2021-189.- 2021-11-15 - 9 p. - Published in : PoS: LATTICE2021 (2021) , pp. 572
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In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.572

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2021-11-17
06:21
New constraints on flavour violating supersymmetry / Boussejra, M.A. (IP2I, Lyon) ; Mahmoudi, F. (IP2I, Lyon ; CERN)
We present a first update on the constraints on general MSSM scenarios with non-minimal sources of flavour violation (NMFV). [...]
arXiv:2111.07938 ; CERN-TH-2021-179. - 6 p.
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2021-11-17
06:20
Yoga Dark Energy: Natural Relaxation and Other Dark Implications of a Supersymmetric Gravity Sector / Burgess, C.P. (McMaster U. ; Perimeter Inst. Theor. Phys. ; CERN) ; Dineen, Danielle (McMaster U.) ; Quevedo, F. (Cambridge U., DAMTP)
We construct a class of 4D `yoga' (naturally relaxed) models for which the vacuum energies of heavy particles do not gravitate. [...]
arXiv:2111.07286 ; CERN-TH-2021-192. - 62 p.
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