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Title: First Measurement of the Angular Coefficients of Drell-Yan $$e^{+}e^{-}$$ pairs in the Z Mass Region from $$p\bar{p}$$ Collisions at $$\sqrt{s}$$ = 1.96 TeV

Abstract

We report on the first measurement of the angular distributions of final state electrons in p{bar p} {yields} {gamma}*/Z {yields} e{sup +}e{sup -} + X events produced in the Z boson mass region at {radical}s = 1.96 TeV. The data sample collected by the CDF II detector for this result corresponds to 2.1 fb{sup -1} of integrated luminosity. The angular distributions are studied as a function of the transverse momentum of the electron-positron pair and show good agreement with the Lam-Tung relation, consistent with a spin-1 description of the gluon, and demonstrate that at high values of the transverse momentum, Z bosons are produced via quark anti-quark annihilation and quark-gluon Compton processes.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1013147
Report Number(s):
FERMILAB-PUB-11-153-E
Journal ID: ISSN 0031--9007; arXiv eprint number arXiv:1103.5699; TRN: US1102419
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Submitted to Phys.Rev.Lett.
Additional Journal Information:
Journal Volume: 106; Journal Issue: 24; Journal ID: ISSN 0031--9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANGULAR DISTRIBUTION; ANNIHILATION; BOSONS; ELECTRONS; FERMILAB COLLIDER DETECTOR; LUMINOSITY; QUARKS; TRANSVERSE MOMENTUM; Experiment-HEP

Citation Formats

Aaltonen, T, Aaltonen, T, /Helsinki Inst. of Phys., Alvarez Gonzalez, B, /Oviedo U. /Cantabria Inst. of Phys., Amerio, S, /INFN, Padua, Amidei, D, /Michigan U., Anastassov, A, /Northwestern U., Annovi, A, /Frascati, Antos, J, /Comenius U., Apollinari, G, /Fermilab, Appel, J A, /Fermilab, Apresyan, A, and /Purdue U. /Waseda U. /Dubna, JINR. First Measurement of the Angular Coefficients of Drell-Yan $e^{+}e^{-}$ pairs in the Z Mass Region from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV. United States: N. p., 2011. Web. doi:10.1103/PhysRevLett.106.241801.
Aaltonen, T, Aaltonen, T, /Helsinki Inst. of Phys., Alvarez Gonzalez, B, /Oviedo U. /Cantabria Inst. of Phys., Amerio, S, /INFN, Padua, Amidei, D, /Michigan U., Anastassov, A, /Northwestern U., Annovi, A, /Frascati, Antos, J, /Comenius U., Apollinari, G, /Fermilab, Appel, J A, /Fermilab, Apresyan, A, & /Purdue U. /Waseda U. /Dubna, JINR. First Measurement of the Angular Coefficients of Drell-Yan $e^{+}e^{-}$ pairs in the Z Mass Region from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV. United States. https://doi.org/10.1103/PhysRevLett.106.241801
Aaltonen, T, Aaltonen, T, /Helsinki Inst. of Phys., Alvarez Gonzalez, B, /Oviedo U. /Cantabria Inst. of Phys., Amerio, S, /INFN, Padua, Amidei, D, /Michigan U., Anastassov, A, /Northwestern U., Annovi, A, /Frascati, Antos, J, /Comenius U., Apollinari, G, /Fermilab, Appel, J A, /Fermilab, Apresyan, A, and /Purdue U. /Waseda U. /Dubna, JINR. 2011. "First Measurement of the Angular Coefficients of Drell-Yan $e^{+}e^{-}$ pairs in the Z Mass Region from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV". United States. https://doi.org/10.1103/PhysRevLett.106.241801. https://www.osti.gov/servlets/purl/1013147.
@article{osti_1013147,
title = {First Measurement of the Angular Coefficients of Drell-Yan $e^{+}e^{-}$ pairs in the Z Mass Region from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV},
author = {Aaltonen, T and Aaltonen, T and /Helsinki Inst. of Phys. and Alvarez Gonzalez, B and /Oviedo U. /Cantabria Inst. of Phys. and Amerio, S and /INFN, Padua and Amidei, D and /Michigan U. and Anastassov, A and /Northwestern U. and Annovi, A and /Frascati and Antos, J and /Comenius U. and Apollinari, G and /Fermilab and Appel, J A and /Fermilab and Apresyan, A and /Purdue U. /Waseda U. /Dubna, JINR},
abstractNote = {We report on the first measurement of the angular distributions of final state electrons in p{bar p} {yields} {gamma}*/Z {yields} e{sup +}e{sup -} + X events produced in the Z boson mass region at {radical}s = 1.96 TeV. The data sample collected by the CDF II detector for this result corresponds to 2.1 fb{sup -1} of integrated luminosity. The angular distributions are studied as a function of the transverse momentum of the electron-positron pair and show good agreement with the Lam-Tung relation, consistent with a spin-1 description of the gluon, and demonstrate that at high values of the transverse momentum, Z bosons are produced via quark anti-quark annihilation and quark-gluon Compton processes.},
doi = {10.1103/PhysRevLett.106.241801},
url = {https://www.osti.gov/biblio/1013147}, journal = {Submitted to Phys.Rev.Lett.},
issn = {0031--9007},
number = 24,
volume = 106,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 2011},
month = {Tue Mar 01 00:00:00 EST 2011}
}