Multijet production at low x{sub Bj} in deep inelastic scattering at HERA.

Journal Article · Mon Dec 10 04:00:00 EST 2007 · Nucl. Phys. B

DOI:https://doi.org/10.1016/j.nuclphysb.2007.05.027· OSTI ID:935924

Chekanov, S; Derrick, M; Magill, S; Musgrave, B; Nicholass, D; Repond, J; Yoshida, R

Inclusive dijet and trijet production in deep inelastic ep scattering has been measured for 10 < Q{sup 2} < 100 GeV{sup 2} and low Bjorken x, 10{sup -4} <{sub Bj}<10{sup -2}. The data were taken at the HERA ep collider with center-of-mass energy {radical}s = 318 GeV using the ZEUS detector and correspond to an integrated luminosity of 82 pb{sup -1}. Jets were identified in the hadronic center-of-mass (HCM) frame using the k{sub T} cluster algorithm in the longitudinally invariant inclusive mode. Measurements of dijet and trijet differential cross sections are presented as functions of Q{sup 2}, x{sub Bj}, jet transverse energy, and jet pseudorapidity. As a further examination of low-x{sub Bj} dynamics, multi-differential cross sections as functions of the jet correlations in transverse momenta, azimuthal angles, and pseudorapidity are also presented. Calculations at {Omicron}({alpha}{sub s}{sup 2}) generally describe the trijet data well and improve the description of the dijet data compared to the calculation at {Omicron}({alpha}{sub s}{sup 2}).

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 935924
• Report Number(s): ANL-HEP-PR-07-28
• Journal Information: Nucl. Phys. B, Journal Name: Nucl. Phys. B Journal Issue: 1-2 ; Dec. 10, 2007 Vol. 786
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
ALGORITHMS
DEEP INELASTIC SCATTERING
DIFFERENTIAL CROSS SECTIONS
HERA STORAGE RING
JETS
LUMINOSITY
PARTICLE RAPIDITY
TRANSVERSE MOMENTUM