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Title: Hadronic Production of Ψ(2S) Cross section and Polarization

Abstract

The hadronic production cross section and the polarization of Ψ(2S) meson are measured by using the data from p$$\bar{p}$$ collisions at √s = 1.96 TeV collected by the Collider Detector at Fermilab. The datasets used correspond to integrated luminosity of 1.1 fb-1 and 800 pb-1, respectively. The decay Ψ(2S) → μ+μ- is used to reconstruct Ψ(2S) mesons in the rapidity range |y(Ψ(2S))| < 0.6. The coverage of the pT range is 2.0 GeV/c ≤ pT (Ψ(2S)) < 30 GeV/c for the cross section analysis and pT ≥ 5 GeV/c for the polarization analysis. For events with pT (Ψ(2S)) > 2 GeV/c the integrated inclusive cross section multiplied by the branching ratio for dimuon decay is 3.17 ± 0.04 ± 0.28 nb . This result agrees with the CDF Run I measurement considering the increased center-of-mass energy from 1.8 TeV to 1.96 TeV. The polarization of the promptly produced Ψ(2S) mesons is found to be increasingly longitudinal as pT increases from 5 GeV/c to 30 GeV/c. The result is compared to contemporary theory models.

Authors:
 [1]
  1. Carnegie Mellon Univ., Pittsburgh, PA (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
945432
Report Number(s):
FERMILAB-THESIS-2008-58
TRN: US0900833
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BRANCHING RATIO; CROSS SECTIONS; DECAY; FERMILAB COLLIDER DETECTOR; LUMINOSITY; MESONS; PARTICLE RAPIDITY; POLARIZATION; PRODUCTION; Experiment-HEP

Citation Formats

Chung, Kwangzoo. Hadronic Production of Ψ(2S) Cross section and Polarization. United States: N. p., 2008. Web. doi:10.2172/945432.
Chung, Kwangzoo. Hadronic Production of Ψ(2S) Cross section and Polarization. United States. https://doi.org/10.2172/945432
Chung, Kwangzoo. 2008. "Hadronic Production of Ψ(2S) Cross section and Polarization". United States. https://doi.org/10.2172/945432. https://www.osti.gov/servlets/purl/945432.
@article{osti_945432,
title = {Hadronic Production of Ψ(2S) Cross section and Polarization},
author = {Chung, Kwangzoo},
abstractNote = {The hadronic production cross section and the polarization of Ψ(2S) meson are measured by using the data from p$\bar{p}$ collisions at √s = 1.96 TeV collected by the Collider Detector at Fermilab. The datasets used correspond to integrated luminosity of 1.1 fb-1 and 800 pb-1, respectively. The decay Ψ(2S) → μ+μ- is used to reconstruct Ψ(2S) mesons in the rapidity range |y(Ψ(2S))| < 0.6. The coverage of the pT range is 2.0 GeV/c ≤ pT (Ψ(2S)) < 30 GeV/c for the cross section analysis and pT ≥ 5 GeV/c for the polarization analysis. For events with pT (Ψ(2S)) > 2 GeV/c the integrated inclusive cross section multiplied by the branching ratio for dimuon decay is 3.17 ± 0.04 ± 0.28 nb . This result agrees with the CDF Run I measurement considering the increased center-of-mass energy from 1.8 TeV to 1.96 TeV. The polarization of the promptly produced Ψ(2S) mesons is found to be increasingly longitudinal as pT increases from 5 GeV/c to 30 GeV/c. The result is compared to contemporary theory models.},
doi = {10.2172/945432},
url = {https://www.osti.gov/biblio/945432}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 01 00:00:00 EDT 2008},
month = {Thu May 01 00:00:00 EDT 2008}
}

Thesis/Dissertation:
Other availability
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