Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium.
نویسندگان
چکیده
A rigorous QCD analysis of the inclusive annihilation decay rates of heavy quarkonium states is presented. The effective-field-theory framework of nonrelativistic QCD is used to separate the short-distance scale of annihilation, which is set by the heavy quark massM , from the longer-distance scales assoOn leave from Dept. of Physics and Astronomy, Northwestern University, Evanston, IL 60208.
منابع مشابه
Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation
In the framework of potential NRQCD, we obtain the next-to-leading-log renormalization-group running of the matching coefficients for the heavy quarkonium production currents near threshold. This allows to obtain S-wave heavy-quarkonium production/annihilation observables with next-to-leadinglog accuracy within perturbative QCD. In particular, we give expressions for the decays of heavy quarkon...
متن کاملJ/Ψ production in two-photon collisions at next-to-leading order
Heavy quarkonium played an important role in establishing the asymptotic freedom of QCD, as its mass is much larger than the low-energy scale of the strong interactions ΛQCD. On the other hand, the compensation of colour in heavy quarkonium gives new insights into the confinement mechanism, a nonperturbative process which is still not fully understood. The factorization approach based on the no...
متن کاملEffective field theories for heavy quarkonium
We review recent theoretical developments in heavy quarkonium physics from the point of view of Effective Field Theories of QCD. We discuss Non-Relativistic QCD and concentrate on potential Non-Relativistic QCD. Our main goal will be to derive QCD Schrödinger-like equations that govern heavy quarkonium physics in the weak and strong coupling regime. We also discuss a selected set of application...
متن کاملχcJ production in e + e − annihilation
Inclusive production of χcJ in e +e− annihilation is an excellent probe of the role of higher Fock states in the production of heavy quarkonia. Within the non-relativistic QCD approach, contributions from the short-distance production of colour-octet cc̄ pairs are significantly larger than those from coloursinglet production. At the same time, χcJ production rates are significantly smaller than ...
متن کاملCurrent Issues in Quarkonium Production
As a stringent test of the nonrelativistic QCD factorization approach for inclusive heavy-quarkonium production in high-energy hadron collision, the polarized heavyquarkonium production at the Tevatron is discussed. The polarization of prompt J/ψ at the Tevatron is predicted within the nonrelativistic QCD factorization framework. The contribution from radiative decays of P-wave charmonium state...
متن کاملذخیره 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 ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review. D, Particles and fields
دوره 51 3 شماره
صفحات -
تاریخ انتشار 1995