N ov 1 99 6 STANDARD MODEL AND ELECTROWEAK INTERACTION : PHENOMENOLOGY ∗

نویسنده

  • Giampiero PASSARINO
چکیده

The status of the LEP 1 results, the LEP 2 perspectives and some recent developments in high energy physics at e + e − machines are briefly discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

ar X iv : h ep - p h / 06 11 17 4 v 1 1 3 N ov 2 00 6 Freiburg - THEP 06 / 15 The Z ′ reconsidered

We consider the extension of the standard model with an arbitrary number of U (1) gauge fields coupled to baryon-minus-lepton number and/or hypercharge. Under the assumption that A b fb from the LEP1 experiment is an unlucky fluctuation, we find moderate evidence for the presence of such fields in the precision electroweak data. A relatively large range of the Higgs boson mass is allowed. We di...

متن کامل

ar X iv : h ep - p h / 94 11 40 0 v 1 2 3 N ov 1 99 4 SINP / TNP / 94 - 9 Baryogenesis at the Electroweak Scale

The generation of the baryon asymmetry of the universe is considered in the standard model of the electroweak theory with simple extensions of the Higgs sector. The propagation of quarks of masses up to about 5 GeV are considered, taking into account their markedly different dispersion relations due to propagation through the hot elec-troweak plasma. It is shown that the contribution of these l...

متن کامل

ar X iv : h ep - p h / 93 11 32 0 v 1 1 9 N ov 1 99 3 An Extended Technicolor Model

An extended technicolor model is constructed. Quark and lepton masses, spontaneous CP violation, and precision electroweak measurements are discussed. Dynamical symmetry breaking is analyzed using the concept of the BIG MAC.

متن کامل

1 99 8 UPR - 0793 - T , hep - ph / 980 xxxx U ( 1 ) ′ Symmetry Breaking in Supersymmetric E 6 Models

We study the electroweak and U(1) ′ symmetry breaking patterns in models with the particle content of supersymmetric E6, including standard model singlets S and exotic quarks D, D̄. Motivated by free fermionic string models, we do not require E6-type relations between Yukawa couplings. In particular, we assume that baryon and lepton numbers are conserved, so that the exotic quarks can be light. ...

متن کامل

ar X iv : h ep - p h / 93 01 20 1 v 1 3 J an 1 99 3 TUTP — 92 - 12 Electroweak Strings : A Progress Report

The standard model for the electroweak interactions is known 1,2,3,4 to contain vortex solutions that are the usual Nielsen-Olesen U(1) vortices 5 embedded in the larger electroweak symmetry group SU(2) × U(1). After briefly describing these vortex solutions, I will discuss their stability and argue that the presence of bound states can stabilize them. Then I will draw an intimate connection be...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1996