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An overview of recent theoretical developments in rare leptonic B decays is given. New physics effects on branching ratio and CP violation in the decays are analyzed in models beyond SM (supersymmetric models and two Higgs doublet models).

High Energy Physics - Phenomenology · Physics 2014-11-17 Chao-Shang Huang

The quark sector of the Standard Model exhibits an approximate U(2)^3 flavour symmetry. This symmetry, broken in specific directions dictated by minimality, can explain the success of the Cabibbo-Kobayashi-Maskawa picture of flavour mixing…

High Energy Physics - Phenomenology · Physics 2017-08-23 Riccardo Barbieri , Dario Buttazzo , Filippo Sala , David M. Straub

Experimental study at LHC of the possible Higgs boson should soon provide accurate estimates of the Yukawa couplings $Y_{H\bar{f}f}$ for $f=t,b,\tau$. In the presence of a non-abelian discrete flavor symmetry $G_F$ (e.g. T') the usual…

High Energy Physics - Phenomenology · Physics 2013-01-04 Paul H. Frampton

This is a personal summary of points made during, and arising from the symposium, drawing largely from the talks presented there. The Standard Model is doing fine, including QCD, the electroweak sector and flavour physics. The good news is…

High Energy Physics - Phenomenology · Physics 2015-06-17 John Ellis

The LHC experiments have searched for and excluded many proposed Beyond the Standard Model (BSM) theories. However, there are many scenarios where LHC has little or no sensitivity. Electron-positron colliders offers a different avenue for…

High Energy Physics - Phenomenology · Physics 2022-12-13 Mikael Berggren

The LHCb experiment has a broad and varied physics programme, extending far beyond its core set of flavour physics measurements. This contribution summarises recent electroweak scale measurements and searches for exotic states in the dimuon…

High Energy Physics - Experiment · Physics 2018-05-28 Oliver Lupton

The present status of theoretical calculations for signal and background processes relevant to the Higgs boson search at the LHC is reviewed, with special emphasis on recent developments. The issue of Higgs properties determination at the…

High Energy Physics - Phenomenology · Physics 2009-11-07 F. Piccinini

I start with a brief introduction to Higgs mechanism and supersymmetry. Then I discuss the theoretical expectations, current limits and search strategies for Higgs boson(s) at LHC --- first in the SM and then in the MSSM. Finally I discuss…

High Energy Physics - Phenomenology · Physics 2009-10-31 D. P. Roy

Studying the properties of the Higgs boson can be an important window to explore the physics beyond the Standard Model (SM). In this work, we present studies on the implications of the Higgs precision measurements at future Higgs Factories.…

High Energy Physics - Phenomenology · Physics 2019-06-26 Ning Chen , Jiayin Gu , Tao Han , Honglei Li , Zhen Liu , Huayang Song , Shufang Su , Wei Su , Yongcheng Wu , Jin Min Yang

We consider the implications of current LHC data on new physics with strongly interacting sector(s). We parametrize the relevant interaction Lagrangian and study the best fit values in light of current data. These are then considered within…

High Energy Physics - Phenomenology · Physics 2015-06-15 Tommi Alanne , Stefano Di Chiara , Kimmo Tuominen

To maximise the information obtained from various independent new physics searches conducted at the LHC, it is imperative to consider the combination of multiple analyses. To showcase the exclusion power gained by combining signal regions…

High Energy Physics - Phenomenology · Physics 2024-07-16 Alexander Feike , Juri Fiaschi , Benjamin Fuks , Michael Klasen , Alexander Puck Neuwirth

We emphasize the power of correlations between flavour observables in the search for New Physics and identify a number of correlations that could allow to discover New Physics even if it would appear at the level of 20% of the Standard…

High Energy Physics - Phenomenology · Physics 2013-10-01 Andrzej J. Buras

The LHCb experiment has the potential, during the 2010-11 run, to observe the rare decay $B^0_s\to \mu^+\mu^-$ or improve significantly its exclusion limits. This study will provide very sensitive probes of New Physics (NP) effects. High…

High Energy Physics - Experiment · Physics 2019-08-13 Giampiero Mancinelli

We study the five chirality-flipping interactions that appear in the top-Higgs sector at leading order in the standard model effective field theory. We consider constraints from collider observables, flavor physics, and…

High Energy Physics - Phenomenology · Physics 2017-06-07 W. Dekens

A brief review of searches for physics beyond the Standard Model in photonic final states at LEP is given here. These include searches for supersymmetry, large extra dimensions and contact interactions. Recent results from all four LEP…

High Energy Physics - Experiment · Physics 2011-09-13 Marat Gataullin

Dark matter candidates arising in models of particle physics incorporating weak scale supersymmetry may produce detectable signals through their annihilation into neutrinos, photons, or positrons. A large number of relevant experiments are…

Astrophysics · Physics 2009-10-09 Jonathan L. Feng , Konstantin T. Matchev , Frank Wilczek

This talk is a short overview of the physics potential of the LHC with emphasis on Higgs search and SUSY search. First I review why LHC with the ATLAS and CMS detectors is expected to give a decisive test of the electroweak symmetry…

High Energy Physics - Phenomenology · Physics 2009-10-30 Z. Kunszt

Effects of supersymmetric particles may appear in various low energy experiments through loop diagrams. We discuss various flavor changing neutral current processes, the muon anomalous magnetic moment and lepton flavor violation in the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Yasuhiro Okada

I give a brief review of some of the opportunities and challenges that could arise in our quest to unravel the Higgs sector that very probably underlies electroweak symmetry breaking. In particular, I review scenarios with an extended Higgs…

High Energy Physics - Phenomenology · Physics 2007-05-23 John F. Gunion

We present a reinterpretation of CMS searches for type-III seesaw lepton triplets at the LHC, both for the normal and the inverse seesaw. We find that, in contrast with previous expectations, these searches in the trilepton final state have…

High Energy Physics - Phenomenology · Physics 2014-01-01 J. A. Aguilar-Saavedra , P. M. Boavida , F. R. Joaquim