Results 21 to 30 of about 48,672 (174)

Electroweak pseudo-observables and Z-boson form factors at two-loop accuracy

Journal of High Energy Physics, 2019
We present Standard Model predictions for the complete set of phenomenologically relevant electroweak precision pseudo-observables related to the Z-boson: the leptonic and bottom-quark effective weak mixing angles sin 2 θ eff ℓ $$ {\sin}^2{\theta}_ ...
Ievgen Dubovyk, Ayres Freitas, Janusz Gluza, Tord Riemann, Johann Usovitsch   +4 more
doaj   +1 more source

A realistic U(2) model of flavor

Journal of High Energy Physics, 2018
We propose a simple U(2) model of flavor compatible with an SU(5) GUT structure. All hierarchies in fermion masses and mixings arise from powers of two small parameters that control the U(2) breaking. In contrast to previous U(2) models this setup can be
Matthias Linster, Robert Ziegler
doaj   +1 more source

Radiative muon mass models and (g − 2) μ

Journal of High Energy Physics, 2021
Recent measurements of the Higgs-muon coupling are directly probing muon mass generation for the first time. We classify minimal models with a one-loop radiative mass mechanism and show that benchmark models are consistent with current experimental ...
Michael J. Baker, Peter Cox, Raymond R. Volkas   +2 more
doaj   +1 more source

A novel and economical explanation for SM fermion masses and mixings [PDF]

, 2016
I propose the first multiscalar singlet extension of the Standard Model (SM), that generates tree level top quark and exotic fermion masses as well as one and three loop level masses for charged fermions lighter than the top quark and for light active ...
Hernández, A. E. Cárcamo
core   +2 more sources

Fitting flavour symmetries: the case of two-zero neutrino mass textures

Journal of High Energy Physics, 2018
We present a numeric method for the analysis of the fermion mass matrices predicted in flavour models. The method does not require any previous algebraic work, it offers a χ2 comparison test and an easy estimate of confidence intervals.
Julien Alcaide, Jordi Salvado, Arcadi Santamaria   +2 more
doaj   +1 more source

Numerical multi-loop calculations via finite integrals and one-mass EW-QCD Drell-Yan master integrals

Journal of High Energy Physics, 2017
We study a recently-proposed approach to the numerical evaluation of multi-loop Feynman integrals using available sector decomposition programs. As our main example, we consider the two-loop integrals for the αα s corrections to Drell-Yan lepton ...
Andreas von Manteuffel, Robert M. Schabinger   +1 more
doaj   +1 more source

NLO massive event-shape differential and cumulative distributions

Journal of High Energy Physics, 2020
We provide a general method to effectively compute differential and cumulative event-shape distributions to O(α s ) precision for massive quarks produced primarily at an e + e − collider. In particular, we show that at this order, due to the screening of
Christopher Lepenik, Vicent Mateu
doaj   +1 more source

Variations on the Supersymmetric Q6 Model of Flavor [PDF]

, 2011
We observe that a recently proposed supersymmetric model with Q6 flavor symmetry admits a new CP violating ground state. A new sum rule for the quark mixing parameters emerges, which is found to be consistent with data.
Babu, K. S., Kawashima, Kenji, Kubo, Jisuke   +2 more
core   +1 more source

Grand Unified Yukawa Matrix Ansatz: The Standard Model Fermion Mass, Quark Mixing and CP Violation Parameters

, 2010
We propose a new mass matrix ansatz: At the grand unified (GU) scale, the standard model (SM) Yukawa coupling matrix elements are integer powers of the square root of the GU gauge coupling constant \varepsilon \equiv \sqrt{\alpha_{\text{GU}}}, multiplied
Cecotti S, Heckman J J, Heckman J J, Nelson A E, Weinberg S, Zhang De-Hai, Zhang Yong-Chao   +6 more
core   +1 more source

Higgs Boson Theory and Phenomenology [PDF]

, 2002
Precision electroweak data presently favors a weakly-coupled Higgs sector as the mechanism responsible for electroweak symmetry breaking. Low-energy supersymmetry provides a natural framework for weakly-coupled elementary scalars.
't Hooft, Abbaneo, Abdullin, Abe, Abe, Accomando, Adolphsen, Alcaraz, Altarelli, Altarelli, Altarelli, Alvarez-Gaumé, Amaldi, Anastasiou, Antoniadis, Arhrib, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Harned, Arkani-Harned, Asakawa, Asner, Assamagan, Assamagan, Assamagan, Assamagan, Babu, Babu, Bae, Baer, Baer, Baer, Bagger, Balázs, Balázs, Balázs, Bam, Barbieri, Barbieri, Barbieri, Bardin, Bardin, Barger, Barnett, Barrientos Bendezú, Barrientos Bendezú, Barrientos Bendezú, Barrientos Bendezú, Barrientos Bendezú, Bartl, Battaglia, Battaglia, Battaglia, Beenakker, Belvaev, Belyaev, Belyaev, Belyaev, Belyaev, Berger, Bhat, Bi, Bonciani, Boos, Boos, Boos, Borden, Borden, Borzumati, Borzumati, Borzumati, Boudjema, Boudjerna, Braaten, Brein, Brein, Brignole, Brignole, Brignole, Brignole, Brignole, Brignole, Cahn, Campbell, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Carena, Casalbuoni, Casas, Casas, Casas, Casas, Cavalli, Cavalli, Chang, Chankowski, Chankowski, Chankowski, Chanowitz, Chanowitz, Cheng, Chivukula, Chivukula, Chivukula, Choi, Choi, Choi, Choi, Choi, Choudhury, Choudhury, Choudhury, Choudhury, Christova, Christova, Coarasa, Coarasa, Coarasa, Comelli, Conway, Cornwall, Cornwall, Costanzo, Cox, Czarnecki, Dabelstein, Dabelstein, Dabelstein, Dai, Dai, Davidson, Dawson, Dawson, Dawson, Dawson, Dawson, De Roeck, Degrassi, Demir, Denner, Desch, Diaz-Cruz, Dicus, Dicus, Dimopoulos, Dimopoulos, Dimopoulos, Dimopoulos, Dittmaier, Dittmaier, Dittmar, Dittmar, Dittmar, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Djouadi, Drees, Drees, Drees, Drees, Durand, Durand, Durand, Díaz, Eberl, Eboli, Einhorn, Ellis, Ellis, Ellis, Ellis, Ellis, Ellwanger, Ellwanger, Ellwanger, Enberg, Englert, Erler, Erler, Espinosa, Espinosa, Espinosa, Espinosa, Espinosa, Fadin, Farhi, Fayet, Fleischer, Flores, Freitas, Fusaoka, Gaemers, Gao, Georgi, Ginzburg, Girardello, Glover, Godbole, Goldstein, Gorishnii, Gorishnii, Graudenz, Green, Grzadkowski, Grzadkowski, Grzadkowski, Guasch, Guasch, Guasch, Guchait, Guchait, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Gunion, Guralnik, Gutierrez-Rodriguez, Gutierrez-Rodriguez, H.E. Haber, Haber, Haber, Haber, Haber, Haber, Haber, Haber, Hagiwara, Hall, Hall, Hall, Hall, Hall, Ham, Hambye, Han, Han, Han, Han, Harada, Harlander, Harlander, He, He, Heinemeyer, Heinemeyer, Heinemeyer, Heinemeyer, Heinemeyer, Heinemeyer, Heinemeyer, Heinemeyer, Hempfling, Hempfling, Hempfling, Higgs, Higgs, Hinchliffe, Huang, Ibrahim, Ibrahim, Ibánñez, Ibáñez, Ibáñez, Inami, Inoue, Inoue, Inoue, Inoue, Ioffe, Isidori, Jack, Jiménez, Jin, Jin, Jones, Juste, Kamoshita, Kane, Kane, Kanemura, Kanemura, Kataev, Kataev, Kauer, Kaul, Kaul, Kaul, Kersevan, Khoze, Khoze, Kilian, Kniehl, Kniehl, Kniehl, Kniehl, Kniehl, Knihel, Kodaira, Kolda, Komashita, Krause, Krämer, Krämer, Lafaye, Langacker, Langacker, Lassila-Perini, Lassila-Perini, Lee, Li, Li, Li, Li, Li, Llewellyn Smith, Logan, Loinaz, Loinaz, Low, M. Carena, Maltoni, Marciano, Martin, Matchev, Melles, Melles, Mendez, Miller, Miller, Mohapatra, Moreno, Moretti, Moretti, Moretti, Moretti, Mrenna, Mühlleitner, Mühlleitner, Nelson, Nilles, Ning, Novikov, Okada, Okada, Olness, Osland, Peskin, Peskin, Peskin, Pierce, Pierce, Pilaftsis, Pilaftsis, Pilaftsis, Plehn, Plehn, Plehn, Plehn, Pokorski, Potter, Rainwater, Rainwater, Rainwater, Rainwater, Randall, Ravindran, Reina, Reina, Richter-Was, Riesselmann, Rizzo, Rubakov, Sakai, Sapinski, Sasaki, Skjold, Skjold, Soni, Spira, Spira, Spira, Stange, Stange, Susskind, Susskind, Söldner-Rembold, Thomas, Trefzger, Trefzger, Velasco, Veltman, Weinberg, Weinberg, Weldon, Weldon, Witten, Yamada, Yamada, Zeppenfeld, Zeppenfeld, Zhang, Zhu, Zhu   +439 more
core   +2 more sources