skip to main content

SciTech ConnectSciTech Connect

Title: Measurement of the Lepton Charge Asymmetry in W -Boson Decays Produced in p{ovr p} Collisions

We describe a measurement of the charge asymmetry of leptons from W -boson decays in the rapidity range 0{lt}{vert_bar}y{sub l}{vert_bar}{lt}2.5 using W{r_arrow}e{nu},thinsp{mu}{nu} events from 110{plus_minus}7 pb{sup {minus}1} of data collected by the CDF detector during 1992{endash}1995. The asymmetry data constrain the ratio of d and u quark momentum distributions in the proton over the x range of 0.006 to 0.34 at Q{sup 2}{approx}M{sup 2}{sub W} . The asymmetry predictions that use parton distribution functions obtained from previously published CDF data in the central rapidity region (0.0{lt}{vert_bar}y{sub l}{vert_bar}{lt}1.1 ) do not agree with the new data in the large rapidity region ({vert_bar}y{sub l}{vert_bar}{gt}1.1 ). {copyright} {ital 1998} {ital The American Physical Society}
Authors:
; ; ; ; ;  [1] ; ; ; ; ;  [2] ; ; ; ; ;  [3] ; ; ;  [4] ; more »; ; ; ; ; ;  [5] ; ; ; ; ; ;  [6] ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [7] ; ; ; ;  [8] ; ; ; ; ; ; ; ;  [9] ; ; ;  [10] ; ; ; ; ; ; « less
  1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna (Italy)
  3. Brandeis University, Waltham, Massachusetts 02254 (United States)
  4. University of California at Los Angeles, Los Angeles, California 90024 (United States)
  5. University of Chicago, Chicago, Illinois 60637 (United States)
  6. Duke University, Durham, North Carolina 27708 (United States)
  7. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
  8. University of Florida, Gainesville, Florida 32611 (United States)
  9. Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati (Italy)
  10. University of Geneva, CH-1211, Geneva 4 (Switzerland)
Publication Date:
OSTI Identifier:
300160
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 81; Journal Issue: 26; Other Information: PBD: Dec 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; QUARKS; W PLUS BOSONS; W MINUS BOSONS; PARTICLE DECAY; MUONS; NEUTRINOS; FERMILAB COLLIDER DETECTOR; U QUARKS; D QUARKS; ELECTRIC CHARGES; PARTON MODEL