Direct Measurement of the Top Quark Mass

Journal Article · Fri Aug 01 00:00:00 EDT 1997 · Physical Review Letters

OSTI ID:628694

Gomez, B; Hoeneisen, B; Mooney, P; Negret, J P ^[1]; Davis, K; Fein, D; Forden, G E; Guida, J A; James, E; Johns, K; Markosky, L; Nang, F; Narayanan, A ^[2]; Butler, J M ^[3]; Fatyga, M; Featherly, J; Gibbard, B; Gordon, H; Graf, N; Kahn, S ; Kotcher, J; Protopopescu, S; Rajagopalan, S ^[4]; Bantly, J; Cullen-Vidal, D; Cutts, D; Guida, J M; Hoftun, J S; Nesic, D; Partridge, R ^[5]; Grinstein, S; Piegaia, R ^[6]; Bloom, P; Fisyak, Y; Glenn, S; Grim, G; Klopfenstein, C; Lander, R; Mani, S ^[7]; Drinkard, J; Fahland, T; Hall, R E ^[8]; Boswell, C; Choudhary, B C; Cochran, J; Ellison, J; Gartung, P; Heinson, A P; Huehn, T ^[9]; Alves, G A; Carvalho, W; Maciel, A K; de Miranda, J M; da Motta, H; Nicola, M ^[10]; Castilla-Valdez, H; Gonzalez Solis, J L; Hernandez-Montoya, R; Magana-Mendoza, L ^[11]; Adam, I; Kotwal, A V ^[12]; Bhattacharjee, M ^[13]; Abachi, S; Ahn, S; Baldin, B; Bartlett, J F; Bhat, P C; Boehnlein, A; Borcherding, F; Brandt, A; Bross, A; Christenson, J H; Cooper, W E; Demarteau, M; Denisov, D; Diehl, H T; Diesburg, M; Feher, S; Fisk, H E; Fuess, S; Genser, K; Gerber, C E; Green, D R; Greenlee, H; Grossman, N; Haggerty, H; Hansen, S; Heintz, U; others, and

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1. Universidad de los Andes, Bogota (Colombia)
2. University of Arizona, Tucson, Arizona 85721 (United States)
3. Boston University, Boston, Massachusetts 02215 (United States)
4. Brookhaven National Laboratory, Upton, New York 11973 (United States)
5. Brown University, Providence, Rhode Island 02912 (United States)
6. Universidad de Buenos Aires, Buenos Aires (Argentina)
7. University of California, Davis, California 95616 (United States)
8. University of California, Irvine, California 92697 (United States)
9. University of California, Riverside, California 92521 (United States)
10. LAFEX, Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro (Brazil)
11. CINVESTAV, Mexico City (Mexico)
12. Columbia University, New York, New York 10027 (United States)
13. Delhi University, Delhi, (India) 110007

We measure the top quark mass m{sub t} using t{ovr t} pairs produced in the D0 detector by {radical}(s)=1.8TeV p{ovr p} collisions in a 125pb{sup {minus}1} exposure at the Fermilab Tevatron. We make a two constraint fit to m{sub t} in t{ovr t}{r_arrow}bW{sup +}{ovr b}W{sup {minus}} final states with one {ital W} decaying to q{ovr q} and the other to e{nu} or {mu}{nu} . Events are binned in fit mass {ital versus} a measure of probability for events to be signal rather than background. Likelihood fits to the data yield m{sub t}=173.3{plus_minus}5.6(stat){plus_minus} 6.2(syst)GeV/c{sup 2} . {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 628694
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 7 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FERMILAB TEVATRON
MASS
PAIR PRODUCTION
PROTON-ANTIPROTON INTERACTIONS
QUARKONIUM
T QUARKS
W MINUS BOSONS
W PLUS BOSONS