Induced charges and quark polarization operator at A0 background
نویسندگان
چکیده
منابع مشابه
THE ROLE OF QUARK POLARIZATION IN HEAVY QUARK FRAGMENTATION
We calculate the exact fragmentation functions for c and b quark fragmentation taking into account the spin orientation of the initial heavy quark in the form of analytical and rather simple expressions. Our calculations show that spin orientation may have an important effect on the fragmentation spectrum. This effect is more striking in the cases of c ?D, D*; c? ? , ? , and ?B , B *.
متن کاملOtr Polarization Effects in Beam-profile Monitors at the Fermilab A0 Photoinjector*
Optical transition radiation (OTR) imaging for transverse beam-size characterization is a well-established technique at many accelerators including the Fermilab A0 photoinjector (A0PI) facility. With low beam energies of 14-15 MeV and emittances of 3 mm mrad, one observes beam sizes of 0.8 to 1.5 mm (sigma). However, the use of 50-μm wide slits to sample the beam’s transverse phase spaces signi...
متن کاملThe Interference Effect of Top Quark Polarization at Hadronic Colliders
We derive a simple analytic expression for q ¯ q, gg → t ¯ t → bW + ¯ bW − → b ¯ lν l ¯ bl ′ ¯ ν l ′ for on shell intermediate states with the interference effects due to the polarizations of the t and ¯ t. We then investigate how this effect may be measured at Tevatron or other hadronic colliders.
متن کاملCosmic Microwave Background Polarization
Cosmic microwave background (CMB) anisotropy is our richest source of cosmological information; the standard cosmological model was largely established thanks to study of the temperature anisotropies. By the end of the decade, the Planck satellite will close this important chapter and move us deeper into the new frontier of polarization measurements. Numerous ground–based and balloon–borne expe...
متن کاملW-gauge boson condensation via background charges
We study the electroweak standard model at finite temperature in presence of a bosonic chemical potential associated with the conserved electromagnetic current. To preserve the thermodynamic equilibrium of the system, the thermal medium is neutralized by the introduction of four background charges related to the four gauge bosons of this model. Using the mean-field approximation, in the high te...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics and Electronics
سال: 2018
ISSN: 2616-8685
DOI: 10.15421/331801