Measurement of the top quark pair production cross section in p{bar p} collisions using multijet final states

Journal Article · Thu Jul 01 04:00:00 EDT 1999 · Physical Review, D

OSTI ID:365856

Grinstein, S; Mostafa, M; Piegaia, R ^[1]; Alves, G A; Carvalho, W; Maciel, A K; da Motta, H; Oliveira, E; Santoro, A ^[2]; Lima, J G; Oguri, V ^[3]; Gomez, B; Hoeneisen, B; Mooney, P; Negret, J P ^[4]; Ducros, Y ^[5]; Beri, S B; Bhatnagar, V; Kohli, J M; Singh, J B ^[6] ; Shivpuri, R K ^[7]; Acharya, B S; Banerjee, S; Dugad, S R; Gupta, A; Krishnaswamy, M R; Mondal, N K; Narasimham, V S; Parua, N; Shankar, H C ^[8]; Park, Y M ^[9]; Choi, S; Kim, S K ^[10]; Castilla-Valdez, H; Gonzalez Solis, J L; Hernandez-Montoya, R; Magana-Mendoza, L; Sanchez-Hernandez, A ^[11]; Pawlik, B ^[12]; Gavrilov, V; Gershtein, Y; Kuleshov, S ^[13]; Belyaev, A; Dudko, L V; Ermolov, P; Karmanov, D; Leflat, A; Manankov, V; Merkin, M; Shabalina, E ^[14]; Abramov, V; Babintsev, V V; Bezzubov, V A; Bojko, N I; Burtovoi, V S; Chekulaev, S V; Denisov, S P; Dyshkant, A; Eroshin, O V; Evdokimov, V N; Galyaev, A N; Goncharov, P I; Gurzhiev, S N; Kostritskiy, A V; Kozelov, A V; Kozlovsky, E A; Mayorov, A A ^[15]; Babukhadia, L; Davis, K; Fein, D; Forden, G E; Guida, J A; Johns, K; Nang, F; Narayanan, A; Rutherfoord, J; Shupe, M ^[16]; Aihara, H; Barberis, E; Clark, A R; others, and

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1. Universidad de Buenos Aires, Buenos Aires (Argentina)
2. LAFEX, Centro Brasileiro de Pesquisas Fi sicas, Rio de Janeiro (Brazil)
3. Universidade do Estado do Rio de Janeiro, Rio de Janeiro (Brazil)
4. Universidad de los Andes, Bogota (Colombia)
5. DAPNIA/Service de Physique des Particules, CEA, Saclay (France)
6. Panjab University, Chandigarh (India)
7. Delhi University, Delhi (India)
8. Tata Institute of Fundamental Research, Mumbai (India)
9. Kyungsung University, Pusan (Korea)
10. Seoul National University, Seoul (Korea)
11. CINVESTAV, Mexico City (Mexico)
12. Institute of Nuclear Physics, Krakow (Poland)
13. Institute for Theoretical and Experimental Physics, Moscow (Russia)
14. Moscow State University, Moscow (Russia)
15. Institute for High Energy Physics, Protvino (Russia)
16. University of Arizona, Tucson, Arizona 85721 (United States)

We have studied t{bar t} production using multijet final states in p{bar p} collisions at a center-of-mass energy of 1.8 TeV, with an integrated luminosity of 110.3 pb{sup {minus}1}. Each of the top quarks with these final states decays exclusively to a bottom quark and a {ital W} boson, with the {ital W} bosons decaying into quark-antiquark pairs. The analysis has been optimized using neural networks to achieve the smallest expected fractional uncertainty on the t{bar t} production cross section, and yields a cross section of 7.1{plus_minus}2.8 (stat){plus_minus}1.5 (syst) pb, assuming a top quark mass of 172.1 GeV/c{sup 2}. Combining this result with previous DO/ measurements, where one or both of the {ital W} bosons decay leptonically, gives a t{bar t} production cross section of 5.9{plus_minus}1.2 (stat){plus_minus}1.1 (syst)thinsppb. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 365856
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 60; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B QUARKS
CROSS SECTIONS
NEURAL NETWORKS
PARTICLE PRODUCTION
PROTON-ANTIPROTON INTERACTIONS
T QUARKS
W PLUS BOSONS