Interplay between Perturbative and Non-perturbative Qcd in Three-jet Events

نویسندگان

  • ANDREA BANFI
  • GIULIA ZANDERIGHI
چکیده

We present the perturbative (PT) and non-perturbative (NP) analysis of the cumulative out-of-event-plane momentum distribution in ee annihilation in the near-to-planar three-jet region. A physical interpretation based on simple QCD considerations and kinematical relations will be given, with the aim of extending the described techniques to other multi-jet processes and, possibly, to hadronhadron collisions.

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

QCD analysis of D-parameter in near-to-planar three-jet events

We present the QCD analysis of D-parameter distribution in near-to-planar 3-jet e+e− annihilation events. We derive the all-order resummed perturbative prediction and the leading power suppressed non-perturbative corrections both to the mean value and the distribution. Here non-perturbative corrections are larger than in 2-jet shape observables, so that higher order non-perturbative effects cou...

متن کامل

Non-perturbative QCD analysis of near-to-planar three-jet events

We present the analysis of the 1/Q–suppressed non-perturbative (NP) contribution to the cumulative out-of-event-plane momentum distribution in e+e− annihilation in the near-to-planar three-jet region. It complements our previous study of the perturbative (PT) distributions resummed to single logarithmic accuracy. Due to inter-jet soft gluon radiation, the NP contributions (as well as the PT dis...

متن کامل

QCD analysis of near-to-planar 3-jet events

Perturbative QCD analysis is presented of the cumulative out-of-plane momentum distribution in the near-to-planar e+e− annihilation events, Kout ≪ Q. In this kinematical region multiple gluon radiation effects become essential. They are resummed with the single-logarithmic accuracy, which programme includes the 2-loop treatment of the basic radiation and matching with the exact O ( αs ) result....

متن کامل

Near-to-planar 3-jet events in and beyond QCD perturbation theory

We present the results of QCD analysis of out-of-event-plane momentum distribution in 3-jet ee annihilation events. We consider the all-order resummed perturbative prediction and the leading power suppressed non-perturbative corrections to the mean value 〈Kout〉 and the distribution and explain their non-trivial colour structure. The technique we develop aims at improving the accuracy of the the...

متن کامل

Bicocca–FT–00–14 Pavia–FNT/T–00–17 hep-ph/0010052

Perturbative QCD analysis of near-to-planar three-jet events. We present the all-order resummed K out distribution as a measure of aplanarity in three-jet events.

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 2001