The shapes of jets with transverse energies, E(T)(jet), up to 45 GeV produced in neutral- and charged-current deep inelastic e(+)p scattering (DIS) at Q(2) > 100 GeV(2) have been measured with the ZEUS detector at HERA. Jets are identified using a cane algorithm in the eta-phi plane with a cone radius of one unit. The jets become narrower as E(T)(jet) increases. The jet, shapes in neutral- and charged-current DIS are found to be very similar. The jets in neutral-current DIS are narrower than those in resolved processes in photoproduction and closer to those in direct-photon processes for the same ranges in E(T)(jet) and jet pseudorapidity. The jet shapes in DIS are observed to be similar to those in e(+)e(-) interactions and narrower than those in (p) over bar p collisions for comparable E(T)(jet). Since the jets in e(+)e(-) interactions and e(+)p DIS are predominantly quark initiated in both cases, the similarity in the jet shapes indicates that the pattern of QCD radiation within a quark jet is to a large extent independent of the hard scattering process in these reactions.

Measurement of jet shapes in high-Q(2) deep inelastic scattering at HERA / J., B., M., D., D., K., S., M., D., M., B., M., J., R., R., S., R. L., T., R., Y., H., Z., M. C., K., F., A., P., A., G., B., M., B., L., B., D., B., A., B., G., B., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 8:(1999), pp. 367-380. [10.1007/s100520050471]

Measurement of jet shapes in high-Q(2) deep inelastic scattering at HERA

D'AGOSTINI, Giulio;NIGRO, Andrea;
1999

Abstract

The shapes of jets with transverse energies, E(T)(jet), up to 45 GeV produced in neutral- and charged-current deep inelastic e(+)p scattering (DIS) at Q(2) > 100 GeV(2) have been measured with the ZEUS detector at HERA. Jets are identified using a cane algorithm in the eta-phi plane with a cone radius of one unit. The jets become narrower as E(T)(jet) increases. The jet, shapes in neutral- and charged-current DIS are found to be very similar. The jets in neutral-current DIS are narrower than those in resolved processes in photoproduction and closer to those in direct-photon processes for the same ranges in E(T)(jet) and jet pseudorapidity. The jet shapes in DIS are observed to be similar to those in e(+)e(-) interactions and narrower than those in (p) over bar p collisions for comparable E(T)(jet). Since the jets in e(+)e(-) interactions and e(+)p DIS are predominantly quark initiated in both cases, the similarity in the jet shapes indicates that the pattern of QCD radiation within a quark jet is to a large extent independent of the hard scattering process in these reactions.
1999
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of jet shapes in high-Q(2) deep inelastic scattering at HERA / J., B., M., D., D., K., S., M., D., M., B., M., J., R., R., S., R. L., T., R., Y., H., Z., M. C., K., F., A., P., A., G., B., M., B., L., B., D., B., A., B., G., B., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 8:(1999), pp. 367-380. [10.1007/s100520050471]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/496876
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