The Static Potential in QCD { a fullTwo - Loop Calculation

نویسنده

  • Markus Peter
چکیده

A full analytic calculation of the two-loop diagrams contributing to the static potential in QCD is presented in detail. Using a renormal-ization group improvement, the \three-loop" potential in momentum space is thus derived and the third coeecient of the-function for the V-scheme is given. The Fourier transformation to position space is then performed, and the result is brieey discussed.

برای دانلود رایگان 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 / 97 02 24 5 v 2 1 7 O ct 1 99 7 The Static Potential in QCD – a full Two - Loop Calculation ∗

A full analytic calculation of the two-loop diagrams contributing to the static potential in QCD is presented in detail. Using a renormalization group improvement, the “three-loop” potential in momentum space is thus derived and the third coefficient of the β-function for the V -scheme is given. The Fourier transformation to position space is then performed, and the result is briefly discussed.

متن کامل

ep - p h / 97 02 24 5 v 1 4 F eb 1 99 7 The Static Potential in QCD – a full Two - Loop Calculation ∗

A full analytic calculation of the two-loop diagrams contributing to the static potential in QCD is presented in detail. Using a renormalization group improvement, the “three-loop” potential in momentum space is thus derived and the third coefficient of the β-function for the V -scheme is given. The Fourier transformation to position space is then performed, and the result is briefly discussed.

متن کامل

The Static Potential in Qcd to Two Loops

We evaluate the static QCD potential to two–loop order. Compared to a previous calculation a sizable reduction of the two–loop coefficient a2 is found. ∗e–mail: [email protected]

متن کامل

02 16 6 v 1 1 6 Fe b 20 07 Calculation of the B c leptonic decay constant using the shifted N - expansion method

We give a review and present a comprehensive calculation for the leptonic constant fBc of the low-lying pseudoscalar and vector states of Bc-meson in the framework of static and QCD-motivated nonrelativistic potential models taking into account the one-loop and two-loop QCD corrections in the short distance coefficient that governs the leptonic constant of Bc quarkonium system. Further, we use ...

متن کامل

The Static Quark-Antiquark Potential in QCD to Three Loops

The static potential between an infinitely heavy quark and antiquark is derived in the framework of perturbative QCD to three loops by performing a full calculation of the two-loop diagrams and using the renormalization group. The contribution of massless fermions is included. The force law between infinitely heavy quarks has been investigated since more than 20 years because of its importance ...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997