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CERN Document Server Encontrados 2,026 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 0.37 segundos. 
1.
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Compilation of low-energy constraints on 4-fermion operators in the SMEFT / Falkowski, Adam (Orsay, LPT) ; González-Alonso, Martín (Lyon, IPN ; CERN) ; Mimouni, Kin (ITPP, Lausanne)
We compile information from low-energy observables sensitive to flavor-conserving 4-fermion operators with two or four leptons. Our analysis includes data from e+e- colliders, neutrino scattering on electron or nucleon targets, atomic parity violation, parity-violating electron scattering, and the decay of pions, neutrons, nuclei and tau leptons. [...]
arXiv:1706.03783.- 2017-08-28 - 40 p. Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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Parity-violating neutral-current effects in low-energy elastic electron-nucleon scattering / Reya, E ; Schilcher, K
MZ-TH-75-1. - 1975. - 15 p.
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3.
(68)
Reactor neutrino oscillations as constraints on Effective Field Theory / Falkowski, Adam (Orsay, LPT) ; González-Alonso, Martín (CERN) ; Tabrizi, Zahra (Sao Paulo U.)
We study constraints on the Standard Model Effective Field Theory (SMEFT) from neutrino oscillations in short-baseline reactor experiments. We calculate the survival probability of reactors antineutrinos at the leading order in the SMEFT expansion, that is including linear effects of dimension-6 operators. [...]
arXiv:1901.04553; CERN-TH-2019-002; LPT Orsay 19-02; CERN-TH-2019-002 LPT Orsay 19-02.- 2019-05-27 - 36 p. - Published in : JHEP 05 (2019) 173 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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Dimension-8 SMEFT Analysis of Minimal Scalar Field Extensions of the Standard Model / Ellis, John (King's Coll. London ; CERN) ; Mimasu, Ken (King's Coll. London) ; Zampedri, Francesca (King's Coll. London)
We analyze the constraints obtainable from present data using the Standard Model Effective Field Theory (SMEFT) on extensions of the Standard Model with additional electroweak singlet or triplet scalar fields. We compare results obtained using only contributions that are linear in dimension-6 operator coefficients with those obtained including terms quadratic in these coefficients as well as contributions that are linear in dimension-8 operator coefficients. [...]
arXiv:2304.06663; KCL-PH-TH/2023-18; CERN-TH-2023-038.- 2023-10-09 - 67 p. - Published in : JHEP 2310 (2023) 051 Fulltext: 2304.06663 - PDF; document - PDF;
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First-Generation New Physics in Simplified Models: From Low-Energy Parity Violation to the LHC / Crivellin, Andreas (Zurich U. ; PSI, Villigen ; CERN) ; Hoferichter, Martin (Bern U. ; U. Bern, AEC) ; Kirk, Matthew (Rome U. ; INFN, Rome) ; Manzari, Claudio Andrea (Zurich U. ; PSI, Villigen) ; Schnell, Luc (Paris, LPTHE ; Zurich, ETH ; Ec. Polytech., Palaiseau (main))
New-physics (NP) constraints on first-generation quark-lepton interactions are particularly interesting given the large number of complementary processes and observables that have been measured. Recently, first hints for such NP effects have been observed as an apparent deficit in first-row CKM unitarity, known as the Cabibbo angle anomaly, and the CMS excess in $q\bar q\to e^+e^-$. [...]
arXiv:2107.13569; CERN-TH-2021-112; PSI-21-16; ZU-TH 32/21.- 2021-10-27 - 40 p. - Published in : JHEP 2110 (2021) 221 Fulltext: document - PDF; 2107.13569 - PDF;
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SMEFT Constraints on New Physics Beyond the Standard Model / Ellis, John (King's Coll. London ; NICPB, Tallinn ; CERN)
The Fermi effective theory of the weak interaction helped identify the structure of the electroweak sector of the Standard Model, and the chiral effective Lagrangian pointed towards QCD as the theory of the strong interactions. The Standard Model Effective Field Theory (SMEFT) is a systematic and model-independent framework for characterizing experimental deviations from the predictions of the Standard Model and pointing towards the structures of its possible extensions that is complementary to direct searches for new physics beyond the Standard Model. [...]
arXiv:2105.14942; KCL-PH-TH/2021-035; CERN-TH-2021-083.- 2021 - 13 p. - Published in : 10.31526/ACP.BSM-2021.16 Fulltext: 2105.14942 - PDF; document - PDF; External link: Preprint
In : The International Conference on Beyond Standard Model : From Theory To Experiment (BSM-2021), Online, 29 Mar - 2 Apr 2021
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Beyond the standard model effective field theory with $B \rightarrow c \tau^- \overline{\nu}$ / Burgess, C.P. (McMaster U. ; Perimeter Inst. Theor. Phys. ; CERN) ; Hamoudou, Serge (Montreal U.) ; Kumar, Jacky (Montreal U. ; TUM-IAS, Munich) ; London, David (Montreal U.)
Electroweak interactions assign a central role to the gauge group $SU(2)_L \times U(1)_Y$, which is either realized linearly (SMEFT) or nonlinearly (e.g., HEFT) in the effective theory obtained when new physics above the electroweak scale is integrated out. Although the discovery of the Higgs boson has made SMEFT the default assumption, nonlinear realization remains possible. [...]
arXiv:2111.07421; UdeM-GPP-TH-21-290.- 2022-04-01 - 7 p. - Published in : Phys. Rev. D 105 (2022) 073008 Fulltext: PhysRevD.105.073008 - PDF; 2111.07421 - PDF;
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Neutrinos as a Window to New Physics / Kopp, Joachim (speaker) (CERN)
We discuss some of the manifold ways in which physics beyond the Standard Model (SM) can manifest itself in the neutrino sector. We begin with the dimension-4 "neutrino portal" which leads to mixing between SM neutrino and any new singlet fermion [...]
2021 - 1:15:47. Theory Colloquia External link: Event details In : Neutrinos as a Window to New Physics
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(43)
The parity-violating N? Vertex and field algebra / Pérez, M A
1974. - 10 p.
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10.
(43)
Chiral symmetry and parity-violating meson-nucleon vertices / Meißner, Ulf G
BUTP-92-44.- Bern : Bern Univ., 1993 - 19 p.
In : International Workshop on Baryons as Skyrme Solitons, Siegen, Germany, 28 - 30 Sep 1992, pp.97-115
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