Evidence of color coherence effects in W + jets events from pp collisions at √s = 1.8 TeV
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 464:1-2 (1999) 145-155
Abstract:
We report the results of a study of color coherence effects in pp collisions based on data collected by the DØ detector during the 1994-1995 run of the Fermilab Tevatron Collider, at a center of mass energy √s = 1.8 TeV. Initial-to-final state color interference effects are observed by examining particle distribution patterns in events with a W boson and at least one jet. The data are compared to Monte Carlo simulations with different color coherence implementations and to an analytic modified-leading-logarithm perturbative calculation based on the local parton-hadron duality hypothesis. © 1999 Published by Elsevier Science B.V. All rights reserved.Search for second generation leptoquark pairs decaying to μv + jets in pp collisons at √ s = 1.8 Tev
Physical Review Letters 83:15 (1999) 2896-2901
Abstract:
We report on a search for second generation leptoquarks (LQ) produced in pp collisions at √ = 1.8TeV using the D0 detector at Fermilab. Second generation leptoquarks are assumed to be produced in pairs and to decay to either μ or v and either a strange or a charm quark (q). Limits are placed on σ (pp → LQLQ → μ v + jets) as a function of the mass of the leptoquark. For equal branching ratios to μq and vq second generation scalar leptoquarks with a mass below 160 GeV/c2 vector leptoquarks with anomalous minimal vector couplings with a mass below 240 GeV/c2 and vector leptoquarks with Yang-Mills couplings with a mass below 290 GeV/c2 are excluded at the 95% confidence level. © 1999 The American Physical Society.Studies of WW and WZ production and limits on anomalous WWγ and WWZ couplings
Physical Review D - Particles, Fields, Gravitation and Cosmology 60:7 (1999)
Abstract:
Evidence of anomalous (Formula presented) and (Formula presented) production was sought in (Formula presented) collisions at a center-of-mass energy of (Formula presented) The final states (Formula presented) jet (Formula presented) (Formula presented) and (Formula presented) were studied using a data sample corresponding to an integrated luminosity of approximately (Formula presented) No evidence of anomalous diboson production was found. Limits were set on anomalous (Formula presented) and (Formula presented) couplings and were combined with our previous results. The combined 95% confidence level anomalous coupling limits for (Formula presented) are (Formula presented) (Formula presented) and (Formula presented) (Formula presented) assuming the (Formula presented) couplings are equal to the (Formula presented) couplings. © 1999 The American Physical Society.Evidence of color coherence effects in W plus jets events from p(p)over-bar collisions at √s=1.8 TeV
PHYSICS LETTERS B 464:1-2 (1999) 145-155
Search for R-Parity violating supersymmetry in the dielectron channel
PHYSICAL REVIEW LETTERS 83:22 (1999) 4476-4481