Flavorful electroweak precision observables in the Standard Model effective field theory
Flavorful electroweak precision observables in the Standard Model effective field theory
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标准模型有效场理论中有趣的电弱精密可观测量
DOI：
10.1103/physrevd.105.073006
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发表时间：
2022
影响因子：
5
通讯作者：
P. Giardino
中科院分区：
文献类型：
--
作者：
S. Dawson;P. Giardino
在W极和Z极测量的弱电弱精度可观测值(EWPO)对可能的测量结果提供了严格的限制，这超出了标准模型物理场景。在有效场论(EFT)框架下，EWPO的次前级QCD和电弱结果间接地限制了可能的4-费米子算符，而这些算符对树形能级的可观测性没有贡献。这里我们计算了味非普适4-费米子相互作用对EWPO的次要修正，发现所提取的EFT系数极限与4-费米子算符的味结构有很强的依赖关系。
Electroweak precision observables (EWPO) measured at the W and Z poles provide stringent limits on possible beyond the Standard Model physics scenarios. In an effective field theory (EFT) framework, the next-to-leading order QCD and electroweak results for EWPO yield indirect limits on possible 4-fermion operators that do not contribute to the observables at tree level. Here we calculate the next-to-leading corrections to EWPO induced by flavor non-universal 4-fermion interactions and find that the extracted limits on EFT coefficients have a strong dependence on the flavor structure of the 4-fermion operators.
影响因子：
5.4
作者：
J. Blas;M. Cepeda;J. D’Hondt;R. Ellis;C. Grojean;B. Heinemann;F. Maltoni;A. Nisati;E. Petit;R. Rattazzi;W. V. D. D. F. E. A. G. Galilei-W.-V.-D.-D.-F.-E.-A.-G.-Galilei-2228779514;U. Padova;Italy;Istituto Nazionale Fisica Nucleare;Centro de Investigaciones Energ'eticas;Medioambientales y Tecnol'ogicas;Spain.;Intermediate Energies;V. U. Brussel;Belgium;Ippp;U. Durham;Uk;D. Elektronen-Synchrotron;H Germany;I. Physik;Humboldt-Universitat;A. Freiburg;Centre for Cosmology;P. Physics;Phenomenology;Universit'e catholique de Louvain;D. Astronomia;U. Bologna;Infn;Sezione Infn di Bologna;Sezione di Roma;A. Univ.;CNRSIN2p3;Cppm;Marseille;France;Theoretical Particle Physics Laboratory;Epfl;Switzerland.;Nikhef;U. Amsterdam;The Netherlands.
通讯作者：
J. Blas;M. Cepeda;J. D’Hondt;R. Ellis;C. Grojean;B. Heinemann;F. Maltoni;A. Nisati;E. Petit;R. Rattazzi;W. V. D. D. F. E. A. G. Galilei-W.-V.-D.-D.-F.-E.-A.-G.-Galilei-2228779514;U. Padova;Italy;Istituto Nazionale Fisica Nucleare;Centro de Investigaciones Energ'eticas;Medioambientales y Tecnol'ogicas;Spain.;Intermediate Energies;V. U. Brussel;Belgium;Ippp;U. Durham;Uk;D. Elektronen-Synchrotron;H Germany;I. Physik;Humboldt-Universitat;A. Freiburg;Centre for Cosmology;P. Physics;Phenomenology;Universit'e catholique de Louvain;D. Astronomia;U. Bologna;Infn;Sezione Infn di Bologna;Sezione di Roma;A. Univ.;CNRSIN2p3;Cppm;Marseille;France;Theoretical Particle Physics Laboratory;Epfl;Switzerland.;Nikhef;U. Amsterdam;The Netherlands.
影响因子：
5.4
作者：
T. Corbett;Andreas Helset;Adam Martin;M. Trott
通讯作者：
T. Corbett;Andreas Helset;Adam Martin;M. Trott