The resummed quark form factor in dimensional regularization

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The resummed quark form factor in dimensional regularization

The resummed expression for the quark form factor illustrates the fact that dimensional continuation provides a regularization not only for ultraviolet and infrared singularities of fixed order QCD amplitudes, but also for the Landau pole arising in resummed calculations. Explicit renormalization group invariant analytic expressions for the logarithm of the form factor are given up to two–loop ...

متن کامل

Quark number susceptibilities from HTL-resummed thermodynamics

We compute analytically the diagonal quark number susceptibilities for a quarkgluon plasma at finite temperature and zero chemical potential, and compare with recent lattice results. The calculation uses the approximately self-consistent resummation of hard thermal and dense loops that we have developed previously. For temperatures between 1.5 to 5Tc , our results follow the same trend as the l...

متن کامل

Analytic resummation for the quark form factor in QCD

The quark form factor is known to exponentiate within the framework of dimensionally regularized perturbative QCD. The logarithm of the form factor is expressed in terms of integrals over the scale of the running coupling. I show that these integrals can be evaluated explicitly and expressed in terms of renormalization group invariant analytic functions of the coupling and of the space–time dim...

متن کامل

The Pauli form factor of the quark induced by instantons

The non-perturbative contribution to the Pauli form factor of the quark, F2(Q 2), is calculated within an instanton model for the QCD vacuum. It is shown that the instantons give a large negative contribution to the form factor. The interaction of photons with hadrons is one of the most powerful tools to investigate the structure of strong interactions. The electromagnetic form factors of hadro...

متن کامل

Perturbative resummed series for top quark production in hadron reactions.

Our calculation of the total cross section for inclusive production of t t pairs in hadron collisions is presented. The principal ingredient of the calculation is resummation of the universal leading-logarithm e ects of gluon radiation to all orders in the quantum chromodynamics coupling strength, restricted to the region of phase space that is demonstrably perturbative. We derive the perturbat...

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

ژورنال

عنوان ژورنال: Nuclear Physics B - Proceedings Supplements

سال: 2001

ISSN: 0920-5632

DOI: 10.1016/s0920-5632(01)01113-6