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Variation of multiplicity and transverse energy flow with W{sup 2} and Q{sup 2} in deep inelastic scattering at HERA

Abstract

Charged particle and transverse energy flow for deep inelastic ep scattering at HERA have been investigated in the hadronic center of mass systems as a function of pseudorapidity {eta}* in different W{sup 2} and Q{sup 2} intervals. In addition, the mean charged particle multiplicity and the mean transverse energy as a function of W{sup 2} and Q{sup 2} have been studied. The measurements were made in the kinematic region 85 < W < 230 GeV and 10 < Q{sup 2} < 7000 GeV{sup 2}. The < n{sub ch} > was found to increase with increasing W{sup 2} at fixed Q{sup 2} but did not show any significant dependence on Q{sup 2} at fixed W{sup 2}. The best description of the mean charged multiplicity is given by =a+b{center_dot}ln(W{sup 2}/GeV{sup 2}) with a=-1.38{+-}0.07 and b=0.93{+-}0.05. The increased both with increasing W{sup 2} at fixed Q{sup 2} and with increasing Q{sup 2} at fixed W{sup 2}. The mean transverse energy is described by =a+b{center_dot}ln(W{sup 2}/GeV{sup 2})+c{center_dot}ln (Q{sup 2}/GeV{sup 2})GeV with a=-5.93{+-}0.07, b=1.28{+-}0.06 and c=0.69{+-}0.02. Different QCD models have been compared with data. Only the Color Dipole Model, as implemented in the Monte  More>>
Authors:
Publication Date:
Apr 01, 1995
Product Type:
Thesis/Dissertation
Report Number:
LUNFD6-NFFL-1703
Reference Number:
SCA: 663420; PA: AIX-26:053817; EDB-95:093809; ERA-20:020266; NTS-96:003227; SN: 95001414606
Resource Relation:
Other Information: TH: Diss. (FD).; PBD: Apr 1995
Subject:
66 PHYSICS; DEEP INELASTIC SCATTERING; CHARGED PARTICLES; TRANSVERSE ENERGY; CROSSED FIELDS; HERA STORAGE RING; MULTIPLICITY; SPECTROSCOPY
OSTI ID:
66347
Research Organizations:
Lund Univ. (Sweden). Dept. of Physics
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE95631868; ISBN 91-628-1581-4; TRN: SE9500096053817
Availability:
INIS; OSTI as DE95631868
Submitting Site:
SWDN
Size:
114 p.
Announcement Date:

Citation Formats

Lohmander, H. Variation of multiplicity and transverse energy flow with W{sup 2} and Q{sup 2} in deep inelastic scattering at HERA. Sweden: N. p., 1995. Web.
Lohmander, H. Variation of multiplicity and transverse energy flow with W{sup 2} and Q{sup 2} in deep inelastic scattering at HERA. Sweden.
Lohmander, H. 1995. "Variation of multiplicity and transverse energy flow with W{sup 2} and Q{sup 2} in deep inelastic scattering at HERA." Sweden.
@misc{etde_66347,
title = {Variation of multiplicity and transverse energy flow with W{sup 2} and Q{sup 2} in deep inelastic scattering at HERA}
author = {Lohmander, H}
abstractNote = {Charged particle and transverse energy flow for deep inelastic ep scattering at HERA have been investigated in the hadronic center of mass systems as a function of pseudorapidity {eta}* in different W{sup 2} and Q{sup 2} intervals. In addition, the mean charged particle multiplicity and the mean transverse energy as a function of W{sup 2} and Q{sup 2} have been studied. The measurements were made in the kinematic region 85 < W < 230 GeV and 10 < Q{sup 2} < 7000 GeV{sup 2}. The < n{sub ch} > was found to increase with increasing W{sup 2} at fixed Q{sup 2} but did not show any significant dependence on Q{sup 2} at fixed W{sup 2}. The best description of the mean charged multiplicity is given by =a+b{center_dot}ln(W{sup 2}/GeV{sup 2}) with a=-1.38{+-}0.07 and b=0.93{+-}0.05. The increased both with increasing W{sup 2} at fixed Q{sup 2} and with increasing Q{sup 2} at fixed W{sup 2}. The mean transverse energy is described by =a+b{center_dot}ln(W{sup 2}/GeV{sup 2})+c{center_dot}ln (Q{sup 2}/GeV{sup 2})GeV with a=-5.93{+-}0.07, b=1.28{+-}0.06 and c=0.69{+-}0.02. Different QCD models have been compared with data. Only the Color Dipole Model, as implemented in the Monte Carlo program Ariadne, describes the data satisfactorily. 29 refs.}
place = {Sweden}
year = {1995}
month = {Apr}
}