Observation of Single Top-Quark Production

Journal Article · Fri Aug 28 04:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.092001· OSTI ID:21364642

Abazov, V M; Alexeev, G D; Kharzheev, Y N; Malyshev, V L; Tokmenin, V V; Vertogradov, L S; Yatsunenko, Y A ^[1]; Abbott, B; Gutierrez, P; Hossain, S; Jain, S; Rominsky, M; Severini, H; Skubic, P; Strauss, M ^[2]; Abolins, M; Alton, A; Benitez, J A; Brock, R; Edmunds, D ^[3]

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1. Joint Institute for Nuclear Research, Dubna (Russian Federation)
2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
3. Michigan State University, East Lansing, Michigan 48824 (United States)

We report observation of the electroweak production of single top quarks in pp collisions at sq root(s)=1.96 TeV based on 2.3 fb{sup -1} of data collected by the D0 detector at the Fermilab Tevatron Collider. Using events containing an isolated electron or muon and missing transverse energy, together with jets originating from the fragmentation of b quarks, we measure a cross section of sigma(pp->tb+X,tqb+X)=3.94+-0.88 pb. The probability to measure a cross section at this value or higher in the absence of signal is 2.5x10{sup -7}, corresponding to a 5.0 standard deviation significance for the observation.

• OSTI ID: 21364642
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 103; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
B QUARKS
BARYON-BARYON INTERACTIONS
BEAUTY PARTICLES
CROSS SECTIONS
CYCLIC ACCELERATORS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMILAB TEVATRON
FERMIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
KINETIC ENERGY
LEPTONS
MUONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
PROBABILITY
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUARKS
SYNCHROTRONS
T QUARKS
TEV RANGE
TEV RANGE 01-10
TOP PARTICLES
TRANSVERSE ENERGY