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Title: Measurement of the Forward-Backward Asymmetry in $$\gamma/Z$$ boson to Dilepton Events in Compact Muon Solenoid at a Center-of-mass Energy of 7 TeV

Abstract

The forward-backward asymmetry parameter ($$A_{\rm FB}$$) as a function of dilepton invariant mass in $$Z / \gamma^* \rightarrow l^+l^-$$ ($$l$$=$$e$$ or $$\mu$$) at $$\sqrt{s}$$=7 TeV is measured using 2.2 fb$$^{-1}$$ of $pp$ collision data in 2011. The uncorrected (raw) $$A_{\rm FB}$$ and the corrected (unfolded) $$A_{\rm FB}$$ is performed in a wide mass range between 40 GeV/$$c^{2}$$ to 1000 GeV/$$c^{2}$$, and comparative studies and correction techniques with simulation are described in detail. We measure raw $$A_{\rm FB}$$ for the first time in a large rapidity range of 3 $$<|\eta| <$$ 5 with electrons using the forward calorimeters and achieve almost non-diluted $$A_{\rm FB}$$ result. The $$A_{\rm FB}$$ measurements with muons and electrons and their combination are consistent with the Standard Model (SM) prediction within uncertainties.

Authors:
 [1]
  1. Texas Tech Univ., Lubbock, TX (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1248351
Report Number(s):
FERMILAB-THESIS-2011-47; CERN-THESIS-2011-266
1090893
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Roh, Youn Jung. Measurement of the Forward-Backward Asymmetry in $\gamma/Z$ boson to Dilepton Events in Compact Muon Solenoid at a Center-of-mass Energy of 7 TeV. United States: N. p., 2011. Web. doi:10.2172/1248351.
Roh, Youn Jung. Measurement of the Forward-Backward Asymmetry in $\gamma/Z$ boson to Dilepton Events in Compact Muon Solenoid at a Center-of-mass Energy of 7 TeV. United States. https://doi.org/10.2172/1248351
Roh, Youn Jung. 2011. "Measurement of the Forward-Backward Asymmetry in $\gamma/Z$ boson to Dilepton Events in Compact Muon Solenoid at a Center-of-mass Energy of 7 TeV". United States. https://doi.org/10.2172/1248351. https://www.osti.gov/servlets/purl/1248351.
@article{osti_1248351,
title = {Measurement of the Forward-Backward Asymmetry in $\gamma/Z$ boson to Dilepton Events in Compact Muon Solenoid at a Center-of-mass Energy of 7 TeV},
author = {Roh, Youn Jung},
abstractNote = {The forward-backward asymmetry parameter ($A_{\rm FB}$) as a function of dilepton invariant mass in $Z / \gamma^* \rightarrow l^+l^-$ ($l$=$e$ or $\mu$) at $\sqrt{s}$=7 TeV is measured using 2.2 fb$^{-1}$ of $pp$ collision data in 2011. The uncorrected (raw) $A_{\rm FB}$ and the corrected (unfolded) $A_{\rm FB}$ is performed in a wide mass range between 40 GeV/$c^{2}$ to 1000 GeV/$c^{2}$, and comparative studies and correction techniques with simulation are described in detail. We measure raw $A_{\rm FB}$ for the first time in a large rapidity range of 3 $<|\eta| <$ 5 with electrons using the forward calorimeters and achieve almost non-diluted $A_{\rm FB}$ result. The $A_{\rm FB}$ measurements with muons and electrons and their combination are consistent with the Standard Model (SM) prediction within uncertainties.},
doi = {10.2172/1248351},
url = {https://www.osti.gov/biblio/1248351}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2011},
month = {Thu Dec 01 00:00:00 EST 2011}
}

Thesis/Dissertation:
Other availability
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