Power corrections to event shapes in deep inelastic scattering
نویسندگان
چکیده
منابع مشابه
Power Corrections to Event Shapes in Deep Inelastic Scattering ∗
We investigate the power-suppressed corrections to the mean values of various quantities that characterise the shapes of final states in deep inelastic lepton scattering. Our method is based on an analysis of one-loop Feynman graphs containing a massive gluon, which is equivalent to the evaluation of leading infrared renormalon contributions. As in e + e − annihilation, we find that the leading...
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We compute the two-loop enhancement factors for our earlier one-loop calculations of leading (1=Q) power corrections to the mean values of some event shape variables in deep inelastic lepton scattering. The enhancement is found to be equal to the universal \Milan factor" for those shape variables considered, provided the one-loop calculation is performed in a particular way. As a result, the ph...
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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 rate. The data cover a large range of the four-momentum transfer Q, which is considered to be the relevant energy scale, between 7GeV and 100GeV. The Q dependences of the mean values are compared wi...
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Deep-inelastic scattering data, taken with the H1 detector at HERA, are used to study the event shape variables thrust, jet broadening, jet mass, parameter and two kinds of differential two-jet rate. The data cover a large range of the four-momentum transfer , which is considered to be the relevant energy scale, between and . The dependences of the mean values are compared with second order cal...
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In a recent publication [1] the H1 collaboration has presented measurements of event shape variables in deep-inelastic scattering over a large range in four-momentum transfer . The energy or dependence of the mean values of thrust and , jet broadening , parameter and jet mass was studied in the context of additive power law corrections [2] to the perturbative QCD calculations with the result th...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 1998
ISSN: 1434-6044,1434-6052
DOI: 10.1007/s100520050103