Event Shapes and Power Corrections in Ep Dis at Hera

نویسنده

  • K Rabbertz
چکیده

(on behalf of the H1 and ZEUS collaborations) Deep-inelastic ep scattering data, taken with the H1 and ZEUS detectors at HERA, are used to study the means and distributions of the event shape variables thrust, jet broadening, jet mass, C-parameter and two kinds of differential two-jet rate. The data cover a range of the four-momentum transfer Q, taken to be the relevant energy scale, between 7 GeV and 141 GeV. The Q dependences are compared with second-order calculations of perturbative QCD. Power law corrections are applied to account for hadronization effects.

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

Event Shapes and Power Corrections in ep DIS

Deep-inelastic ep scattering data, taken with the H1 detector at HERA, are used to study the event shape variables thrust, jet broadening, jet mass, C parameter, and two kinds of differential two-jet rates over a large range of “relevant energy” Q between 7GeV and 100GeV. The Q dependence of the mean values is fit to second order calculations of perturbative QCD applying power law corrections p...

متن کامل

Event shapes in deep inelastic ep → eX scattering at HERA ZEUS

5-0290 Session: QCD Hard Interactions Event shapes in deep inelastic ep → eX scattering at HERA Abstract Means and differential distributions of event-shape variables have been studied in neutral current deep inelastic scattering using an integrated luminosity of 82.2pb −1 collected with the ZEUS detector at HERA. The kinematic range used was 80 < Q 2 < 20480 GeV 2 and 0.0024 < x < 0.6, where Q...

متن کامل

Event Shape Variables measured in ep Deep-Inelastic Scattering

Deep inelastic ep scattering data taken with the H detector at HERA are used to study event shape variables over a large range of relevant energy Q between GeV and GeV Previously published analyses on thrust jet broadening jet mass and C parameter are substantially re ned and updated di erential two jet rates treated as event shapes are presented for the rst time The Q dependence of the mean va...

متن کامل

FRIF Workshop on First Principles Non-Perturbative QCD of Hadron Jets Review of Power Corrections in DIS

Event shape variables are known to exhibit rather large hadronisation effects, not treated by purely perturbative calculations. It has been shown [1] that the size of these corrections varies as (Λ/Q), with Q being the hard scale of the process, for most of the event shape observables. This article focuses on power corrections in the approach initiated by Dokshitzer and Webber [2], since these ...

متن کامل

Event Shapes and Power Corrections in Ô Dis H1 Collaboration

Deep-inelastic Ô scattering data, taken with the H1 detector at HERA, are used to analyze the event shape variables thrust, jet broadening, jet mass, parameter and two kinds of differential two-jet rate over a large range of the four-momentum transfer É between Î and ½¼¼ Î. Here, É is taken to be the relevant energy scale for these processes. The É dependence of the mean values is matched with ...

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 2000