Precise measurement of the top quark mass in the dilepton channel at D0

Journal Article · Sun May 01 00:00:00 EDT 2011 · Submitted to Phys.Rev.Lett.

DOI:https://doi.org/10.1103/PhysRevLett.107.082004· OSTI ID:1013143

Abazov, Victor Mukhamedovich; Abbott, Braden Keim; Acharya, Bannanje Sripath; Adams, Mark Raymond; Adams, Todd; Alexeev, Guennadi D; Alkhazov, Georgiy D; Alton, Andrew K; Alverson, George O; Alves, Gilvan Augusto; Ancu, Lucian Stefan

We measure the top quark mass (m{sub t}) in p{bar p} collisions at a center of mass energy {radical}s = 1.96 TeV using dilepton t{bar t} {yields} W{sup +}bW{sup -}{bar b} {yields} {ell}{sup +} {nu}{sub {ell}}b{ell}{sup -} {bar {nu}}{sub {ell}}{bar b} events, where {ell} denotes an electron, a muon, or a tau that decays leptonically. The data correspond to an integrated luminosity of 5.4 fb{sup -1} collected with the D0 detector at the Fermilab Tevatron Collider. We obtain m{sub t} = 174.0 {+-} 1.8(stat) {+-} 2.4(syst) GeV, which is in agreement with the current world average m{sub t} = 173.3 {+-} 1.1 GeV. This is currently the most precise measurement of m{sub t} in the dilepton channel.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1013143
• Report Number(s): FERMILAB-PUB-11-203-E; arXiv eprint number arXiv:1105.0320; TRN: US1102415
• Journal Information: Submitted to Phys.Rev.Lett., Journal Name: Submitted to Phys.Rev.Lett.
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A CENTERS
FERMILAB TEVATRON
LUMINOSITY
T QUARKS
Experiment-HEP