Direct Measurement of the Mass Difference between Top and Antitop Quarks

Journal Article · Fri Sep 25 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.132001· OSTI ID:21370690

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; Benitez, J A; Brock, R; Edmunds, D; Hall, I ^[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 present a measurement of the mass difference between t and t quarks in lepton+jets final states of tt events in 1 fb{sup -1} of data collected with the D0 detector from Fermilab Tevatron Collider pp collisions at sq root(s)=1.96 TeV. The measured mass difference of 3.8+-3.7 GeV is consistent with the equality of t and t masses. This is the first direct measurement of a mass difference between a quark and its antiquark partner.

• OSTI ID: 21370690
• Journal Information: Physical Review Letters, Vol. 103, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.103.132001; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FERMILAB TEVATRON
GEV RANGE 01-10
LEPTONS
MASS DIFFERENCE
PROTON-PROTON INTERACTIONS
T ANTIQUARKS
T QUARKS
TEV RANGE 01-10
ACCELERATORS
ANTIMATTER
ANTIPARTICLES
ANTIQUARKS
BARYON-BARYON INTERACTIONS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATTER
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
QUARKS
SYNCHROTRONS
TEV RANGE
TOP PARTICLES