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Title: Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in pp-bar Collisions at √s= 1.96 TeV

Abstract

We report a study of the invariant mass distribution of jet pairs produced in association with a W boson using data collected with the CDF detector which correspond to an integrated luminosity of 4.3 fb-1. The observed distribution has an excess in the 120-160 GeV/c2 mass range which is not described by current theoretical predictions within the statistical and systematic uncertainties. In this letter we report studies of the properties of this excess.

Authors:
 [1]
  1. et al.
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
CDF
OSTI Identifier:
1011162
Report Number(s):
FERMILAB-PUB-11-164-E; arXiv:1104.0699
Journal ID: ISSN 0031-9007; oai:inspirehep.net:894999; TRN: US1102128
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 17; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DISTRIBUTION; FERMILAB COLLIDER DETECTOR; INTERMEDIATE BOSONS; LUMINOSITY; MASS DISTRIBUTION; Experiment-HEP

Citation Formats

Aaltonen, T. Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in pp-bar Collisions at √s= 1.96 TeV. United States: N. p., 2011. Web. doi:10.1103/PhysRevLett.106.171801.
Aaltonen, T. Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in pp-bar Collisions at √s= 1.96 TeV. United States. https://doi.org/10.1103/PhysRevLett.106.171801
Aaltonen, T. 2011. "Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in pp-bar Collisions at √s= 1.96 TeV". United States. https://doi.org/10.1103/PhysRevLett.106.171801. https://www.osti.gov/servlets/purl/1011162.
@article{osti_1011162,
title = {Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in pp-bar Collisions at √s= 1.96 TeV},
author = {Aaltonen, T},
abstractNote = {We report a study of the invariant mass distribution of jet pairs produced in association with a W boson using data collected with the CDF detector which correspond to an integrated luminosity of 4.3 fb-1. The observed distribution has an excess in the 120-160 GeV/c2 mass range which is not described by current theoretical predictions within the statistical and systematic uncertainties. In this letter we report studies of the properties of this excess.},
doi = {10.1103/PhysRevLett.106.171801},
url = {https://www.osti.gov/biblio/1011162}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 17,
volume = 106,
place = {United States},
year = {Thu Apr 28 00:00:00 EDT 2011},
month = {Thu Apr 28 00:00:00 EDT 2011}
}

Journal Article:

Figures / Tables:

FIG. 1 FIG. 1: The dijet invariant mass distribution. The sum of electron and muon events is plotted. In the left plots we show the fits for known processes only (a) and with the addition of a hypothetical Gaussian component (c). On the right plots we show, by subtraction, only the resonantmore » contribution to Mjj including WW and WZ production (b) and the hypothesized narrow Gaussian contribution (d). In plot (b) and (d) data points differ because the normalization of the background changes between the two fits. The band in the subtracted plots represents the sum of all background shape systematic uncertainties described in the text. The distributions are shown with a 8 GeV/c2 binning while the actual fit is performed using a 4 GeV/c2 bin size.« less

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