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Title: Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in pp collisions at {radical}(s)=1.96 TeV

Abstract

This paper describes a measurement of the top quark mass, M{sub top}, with the dynamical likelihood method (DLM) using the CDF II detector at the Fermilab Tevatron. The Tevatron produces top/antitop (tt) pairs in pp collisions at a center-of-mass energy of 1.96 TeV. The data sample used in this analysis was accumulated from March 2002 through August 2004, which corresponds to an integrated luminosity of 318 pb{sup -1}. We use the tt candidates in the 'lepton+jets' decay channel, requiring at least one jet identified as a b quark by finding a displaced secondary vertex. The DLM defines a likelihood for each event based on the differential cross section as a function of M{sub top} per unit phase space volume of the final partons, multiplied by the transfer functions from jet to parton energies. The method takes into account all possible jet combinations in an event, and the likelihood is multiplied event by event to derive the top quark mass by the maximum likelihood method. Using 63 tt candidates observed in the data, with 9.2 events expected from background, we measure the top quark mass to be 173.2(+2.6/-2.4)(stat.){+-}3.2(syst.) GeV/c{sup 2}, or 173.2(+4.1/-4.0) GeV/c{sup 2}.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]; ;  [2]
  1. University of Illinois, Urbana, Illinois 61801 (United States)
  2. University of Florida, Gainesville, Florida 32611 (United States) (and others)
Publication Date:
OSTI Identifier:
20782964
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.73.092002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B QUARKS; DIFFERENTIAL CROSS SECTIONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; GEV RANGE; INCLUSIVE INTERACTIONS; JET MODEL; LEPTONS; MAXIMUM-LIKELIHOOD FIT; PARTICLE DECAY; PHASE SPACE; PROTON-PROTON INTERACTIONS; REST MASS; T QUARKS; TEV RANGE; TRANSFER FUNCTIONS

Citation Formats

Abulencia, A., Budd, S., Chu, P.H., Ciobanu, C.I., Errede, D., Errede, S., Gerberich, H., Grundler, U., Junk, T.R., Kraus, J., Liss, T.M., Marino, C., Pitts, K., Rogers, E., Taffard, A., Veramendi, G., Vickey, T., Zhang, X., Acosta, D., and Cruz, A. Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in pp collisions at {radical}(s)=1.96 TeV. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.73.092002.
Abulencia, A., Budd, S., Chu, P.H., Ciobanu, C.I., Errede, D., Errede, S., Gerberich, H., Grundler, U., Junk, T.R., Kraus, J., Liss, T.M., Marino, C., Pitts, K., Rogers, E., Taffard, A., Veramendi, G., Vickey, T., Zhang, X., Acosta, D., & Cruz, A. Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in pp collisions at {radical}(s)=1.96 TeV. United States. doi:10.1103/PHYSREVD.73.092002.
Abulencia, A., Budd, S., Chu, P.H., Ciobanu, C.I., Errede, D., Errede, S., Gerberich, H., Grundler, U., Junk, T.R., Kraus, J., Liss, T.M., Marino, C., Pitts, K., Rogers, E., Taffard, A., Veramendi, G., Vickey, T., Zhang, X., Acosta, D., and Cruz, A. Mon . "Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in pp collisions at {radical}(s)=1.96 TeV". United States. doi:10.1103/PHYSREVD.73.092002.
@article{osti_20782964,
title = {Measurement of the top quark mass with the dynamical likelihood method using lepton plus jets events with b-tags in pp collisions at {radical}(s)=1.96 TeV},
author = {Abulencia, A. and Budd, S. and Chu, P.H. and Ciobanu, C.I. and Errede, D. and Errede, S. and Gerberich, H. and Grundler, U. and Junk, T.R. and Kraus, J. and Liss, T.M. and Marino, C. and Pitts, K. and Rogers, E. and Taffard, A. and Veramendi, G. and Vickey, T. and Zhang, X. and Acosta, D. and Cruz, A.},
abstractNote = {This paper describes a measurement of the top quark mass, M{sub top}, with the dynamical likelihood method (DLM) using the CDF II detector at the Fermilab Tevatron. The Tevatron produces top/antitop (tt) pairs in pp collisions at a center-of-mass energy of 1.96 TeV. The data sample used in this analysis was accumulated from March 2002 through August 2004, which corresponds to an integrated luminosity of 318 pb{sup -1}. We use the tt candidates in the 'lepton+jets' decay channel, requiring at least one jet identified as a b quark by finding a displaced secondary vertex. The DLM defines a likelihood for each event based on the differential cross section as a function of M{sub top} per unit phase space volume of the final partons, multiplied by the transfer functions from jet to parton energies. The method takes into account all possible jet combinations in an event, and the likelihood is multiplied event by event to derive the top quark mass by the maximum likelihood method. Using 63 tt candidates observed in the data, with 9.2 events expected from background, we measure the top quark mass to be 173.2(+2.6/-2.4)(stat.){+-}3.2(syst.) GeV/c{sup 2}, or 173.2(+4.1/-4.0) GeV/c{sup 2}.},
doi = {10.1103/PHYSREVD.73.092002},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 73,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}