Generalized resummation of QCD final-state observables

نویسندگان
چکیده

برای دانلود رایگان 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

Generalized resummation of QCD final-state observables

The resummation of logarithmically-enhanced terms to all perturbative orders is a prerequisite for many studies of QCD final-states. Until now such resummations have always been performed by hand, for a single observable at a time. In this letter we present a general ‘master’ resummation formula (and applicability conditions), suitable for a large class of observables. This makes it possible fo...

متن کامل

Automated Resummation of Final State Observables in Qcd

A special aspect of QCD in the Standard Model is that the regime where the theory is strongly coupled is within reach of current experiments, and indeed unavoidable. This gives rise to a number of non trivial phenomena, for instance one encounters non-convergent perturbative (PT) expansions and large non-perturbative (NP) corrections even at scales which are, at least formally, within the domai...

متن کامل

Resummation of Non-global Qcd Observables

We discuss issues related to the resummation of non-global observables in QCD, those that are sensitive to radiation in only a part of phase space. Examples of such observables are certain single-hemisphere event shapes in ee and DIS. Compared to global observables (those sensitive to all emissions, e.g. the ee thrust) a new class of single-logarithmic terms arises. These have been neglected in...

متن کامل

Automated resummation of jet observables in QCD

Understanding the physics of event shapes and jet rates (collectively jet observables) requires a deep knowledge of QCD dynamics. Their distributions (defined as the fraction of events Σ(v) with the observable’s value V less than v) explore a wide range of physical scales, from the more inclusive region v = O(1), well described by fixed order perturbative (PT) calculations, to the extreme exclu...

متن کامل

Automated Resummation of Jet Observables in Qcd

Jet observables, event shapes and jet rates, revealed themselves as one of the richest laboratories to explore QCD. Being infrared and collinear safe (IRC), they can be predicted with perturbative (PT) techniques, but their high sensitivity to low energy emissions allows us to investigate the fairly unknown nonperturbative regime. Most discriminatory studies make use of distributions. In integr...

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: Physics Letters B

سال: 2004

ISSN: 0370-2693

DOI: 10.1016/j.physletb.2004.01.048