ar X iv : h ep - p h / 98 08 23 5 v 1 5 A ug 1 99 8 LBNL - 42069 August , 1998

نویسنده

  • Spencer R Klein
چکیده

The suppression of photon bremsstrahlung due to a variety of in-medium effects is discussed. Different electrodynamic suppression effects are discussed, and compared with the related color analogs. Higher order effects are considered, and found to be important. Data from SLAC E-146 is discussed, and compared with theory. The effect of finite thickness targets is emphasized, since nuclear size is such an important limiting factor for the chromodynamics effects.

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 / 98 08 49 1 v 1 3 1 A ug 1 99 8 Multiquark States in a Goldstone Boson Exchange Model

We discuss the stability of multiquark systems containing heavy flavours. We show that the Goldstone boson exchange model gives results at variance with one-gluon-exchange models.

متن کامل

ar X iv : h ep - p h / 98 08 41 1 v 1 2 5 A ug 1 99 8 EXPERIMENTAL CONSTRAINTS ON THE CABIBBO - KOBAYASHI - MASKAWA MATRIX

The LEP investigation of the B 0 d and B 0 s oscillations and of the Cabibbo-Kobayashi-Maskawa matrix element |V ub | improve the constraints on the other elements of this matrix. From a fit to the experimental data and the theory calculations it is possible to determine the vertex of the unitarity triangle as:

متن کامل

ar X iv : h ep - p h / 98 08 45 3 v 1 2 8 A ug 1 99 8 CP VIOLATION

The salient features of CP-violating interactions in the standard elec-troweak theory and in a few of its popular extensions are discussed. Moreover a brief overview is given on the status and prospects of searches for CP non-conservation effects in low and high energy experiments.

متن کامل

ar X iv : h ep - p h / 98 08 27 6 v 1 1 0 A ug 1 99 8 Superball dark matter 1

Supersymmetric models predict a natural dark-matter candidate , stable baryonic Q-balls. They could be copiously produced in the early Universe as a by-product of the Affleck-Dine baryogenesis. I review the cosmological and astrophysical implications , methods of detection, and the present limits on this form of dark matter.

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 1998