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Related papers: One-loop renormalization and $\boldsymbol{\rho}$ p…

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We study one-loop effects of sfermions on helicity amplitudes for $\eeww$ in the Minimal Supersymmetric Standard Model. The one-loop contributions are calculated in the $\bar{\rm MS}$ renormalization scheme. In order to verify the validity…

High Energy Physics - Phenomenology · Physics 2009-10-31 Sher Alam , Kaoru Hagiwara , Shinya Kanemura , Robert Szalapski , Yoshiaki Umeda

We present an explicit on-shell framework to renormalize the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix at the one-loop level. It is based on a novel procedure to separate the external-leg mixing corrections into gauge-independent…

High Energy Physics - Theory · Physics 2008-11-26 Bernd A. Kniehl , Alberto Sirlin

We provide, in the R-parity violating supersymmetric standard model, a comprehensive analysis for sneutrino minimization from the one-loop effective scalar potential, and also for one-loop renormalized neutrino masses and mixing by…

High Energy Physics - Phenomenology · Physics 2009-10-31 Eung Jin Chun , Sin Kyu Kang

We formulate the electroweak chiral Lagrangian in its mass eigenstates, and study the its one-loop renormalization and provide its renormalization group equations to the same order, so as to complete it as the low energy effective theory of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Q. S. Yan , D. S. Du

We derive one-loop renormalization group equations (RGE's) for Yukawa coupling parameters of quarks and for the vacuum expectation values of the Higgs doublets in a general framework of the Standard Model with two Higgs doublets (2HDM…

High Energy Physics - Phenomenology · Physics 2009-10-30 G. Cvetic , C. S. Kim , S. S. Hwang

We compute the leading chiral-logarithmic corrections to the S parameter in the four-site Higgsless model. In addition to the usual electroweak gauge bosons of the Standard Model, this model contains two sets of heavy charged and neutral…

High Energy Physics - Phenomenology · Physics 2014-11-18 Sally Dawson , C. B. Jackson

We investigate the complex singlet extension of the Standard Model, which provides a scalar dark matter candidate. We impose the constraints from the observed relic abundance together with the most stringent limits from direct detection…

High Energy Physics - Phenomenology · Physics 2025-09-05 Koichi Funakubo , Chikako Idegawa

In the present paper, we make a detailed analysis for the QCD corrections to the electroweak $\rho$ parameter by applying the principle of maximum conformality (PMC). As a comparison, we show that under the conventional scale setting, we…

High Energy Physics - Phenomenology · Physics 2014-06-04 Sheng-Quan Wang , Xing-Gang Wu , Jian-Ming Shen , Hua-Yong Han , Yang Ma

In this paper we summarize the minimal supersymmetric standard model as well as the renormalization group equations of its parameters. We proceed to examine the feasability of the model when the breaking of supersymmetry is parametrized by…

High Energy Physics - Phenomenology · Physics 2009-10-22 D. J. Castano , E. J. Piard , P. Ramond

In this work, we perform the electroweak phase transition study with the Georgi-Machacek model. We investigate both the one-step and two-step strong first order electroweak phase transition (SFOEWPT). The SFOEWPT viable parameter spaces…

High Energy Physics - Phenomenology · Physics 2019-02-20 Ruiyu Zhou , Wei Cheng , Xin Deng , Ligong Bian , Yongcheng Wu

We compute the four-loop contribution to the electroweak $\rho$ parameter induced by the singlet diagrams of the $Z$-boson self-energy. The numerical impact on the weak mixing angle and the $W$-boson mass is small.

High Energy Physics - Phenomenology · Physics 2009-11-11 Y. Schroder , M. Steinhauser

We derive the Callan-Symanzik equation of the electroweak Standard Model in the QED-like on-shell parameterization. The various coefficient functions, the $\beta$-functions and anomalous dimensions, are determined in one-loop order in the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Elisabeth Kraus , Georg Weiglein

Within the framework of the standard model plus one heavy Higgs triplet, we derive a full set of one-loop renormalization group equations of the neutrino mass matrix and Higgs couplings in both full and effective theories. The explicit RGEs…

High Energy Physics - Phenomenology · Physics 2008-11-26 Wei Chao , He Zhang

We have computed the one-loop electroweak expression of diagonal and non diagonal stop-antistop and sbottom-antisbottom production from initial state gluons at LHC. We have investigated the possibility that the one-loop effects exhibit a…

High Energy Physics - Phenomenology · Physics 2008-12-25 M. Beccaria , G. Macorini , L. Panizzi , F. M. Renard , C. Verzegnassi

In part I and II of this series of papers all elements have been introduced to extend, to two loops, the set of renormalization procedures which are needed in describing the properties of a spontaneously broken gauge theory. In this paper,…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Actis , G. Passarino

A comparison of spectra obtained using the 1-loop MSSM and 2-loop R-parity violating MSSM renormalization group equations is presented. Influence of higher loop corrections and R-parity violating terms is discussed. Some numerical…

High Energy Physics - Phenomenology · Physics 2009-11-10 Marek Gozdz , Wieslaw A. Kaminski

We analyze the one loop correction to $Z\rightarrow \nu\nu$ decay in framework of Minimal R-symmetric Supersymmetric Standard Model(MRSSM) in detail with normal and inverse neutrino mass orderings, as a function of $\tan\beta$, Dirac mass…

High Energy Physics - Phenomenology · Physics 2019-03-27 Ke-Sheng Sun , Jian-Bin Chen , Xiu-Yi Yang , Hai-Bin Zhang

We explore the one-loop electroweak radiative corrections in the minimal $SU(5)$ and the no-scale flipped $SU(5)$ supergravity models via explicit calculation of vacuum polarization contributions to the $\epsilon_{1,2,3}$ parameters.…

High Energy Physics - Phenomenology · Physics 2009-10-22 J. Lopez , D. V. Nanopoulos , G. Park , H. Pois , K. Yuan

We perform a systematic one-loop renormalization to the standard model with a nonlinearly realized Higgs boson field and the electroweak chiral Lagrangian up to $O(p^2)$ order. We find even in the nonlinear form, the Higgs model of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Qi-Shu Yan

We implement electroweak renormalisation schemes involving the effective weak mixing angle to NLO in Standard Model Effective Field Theory (SMEFT). After developing the necessary theoretical machinery, we analyse a select set of electroweak…

High Energy Physics - Phenomenology · Physics 2023-12-15 Anke Biekötter , Benjamin D. Pecjak , Tommy Smith