Dijet Mass Spectrum and a Search for Quark Compositeness in {ovr p}p Collisions at {radical} (s) =1.8 TeV

Journal Article · Mon Mar 01 00:00:00 EST 1999 · Physical Review Letters

OSTI ID:328592

Grinstein, S; Mostafa, M; Piegaia, R ^[1]; Alves, G A; Carvalho, W; Maciel, A K; da Motta, H; Oliveira, E; Santoro, A ^[2]; 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; James, E; Johns, K; Nang, F; Narayanan, A; Rutherfoord, J; Shupe, M ^[16]; Aihara, H; Barberis, E; Chen, L; others, and

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1. Universidad de Buenos Aires, Buenos Aires (Argentina)
2. LAFEX, Centro Brasileiro de Pesquisas Fisicas, 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)

Using the D0 detector at the 1.8 TeV{ovr p} p Fermilab Tevatron collider, we have measured the inclusive dijet mass spectrum in the central pseudorapidity region {vert_bar} {eta} {sub jet} {vert_bar} {lt}1.0 for dijet masses greater than 200 GeV/c{sup 2} . We have also measured the ratio of spectra {sigma} ({vert_bar} {eta} {sub jet} {vert_bar} {lt} 0.5)/ {sigma} (0.5{lt} {vert_bar} {eta} {sub jet } {vert_bar} {lt}1.0). The order {alpha} {sup 3} {sub s} quantum chromodynamics predictions are in good agreement with the data and we rule out models of quark compositeness with a contact interaction scale {lt} {number_sign} {number_sign}2.4 TeV at the 95{percent} confidence level. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 328592
• Journal Information: Physical Review Letters, Vol. 82, Issue 12; Other Information: PBD: Mar 1999
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
PROTON-ANTIPROTON INTERACTIONS
FERMILAB TEVATRON
REST MASS
QUANTUM CHROMODYNAMICS
JET MODEL
QUARKS
INCLUSIVE INTERACTIONS