Top Quark Mass Measurement in the lepton+jets Channel Using a Matrix Element Method and in situ Jet Energy Calibration

Journal Article · Fri Dec 17 00:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.252001· OSTI ID:21554476

Aaltonen, T; Brucken, E; Devoto, F; Mehtala, P; Orava, R ^[1]; Alvarez Gonzalez, B; Casal, B; Gomez, G; Palencia, E; Rodrigo, T; Ruiz, A; Scodellaro, L; Vila, I; Vilar, R ^[2]; Amerio, S; Dorigo, T; Gresele, A; Lazzizzera, I ^[3]; Amidei, D; Campbell, M ^[4]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander (Spain)
3. Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova (Italy)
4. University of Michigan, Ann Arbor, Michigan 48109 (United States)

A precision measurement of the top quark mass m{sub t} is obtained using a sample of tt events from pp collisions at the Fermilab Tevatron with the CDF II detector. Selected events require an electron or muon, large missing transverse energy, and exactly four high-energy jets, at least one of which is tagged as coming from a b quark. A likelihood is calculated using a matrix element method with quasi-Monte Carlo integration taking into account finite detector resolution and jet mass effects. The event likelihood is a function of m{sub t} and a parameter {Delta}{sub JES} used to calibrate the jet energy scale in situ. Using a total of 1087 events in 5.6 fb{sup -1} of integrated luminosity, a value of m{sub t}=173.0{+-}1.2 GeV/c{sup 2} is measured.

• OSTI ID: 21554476
• Journal Information: Physical Review Letters, Vol. 105, Issue 25; Other Information: DOI: 10.1103/PhysRevLett.105.252001; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
B QUARKS
CALIBRATION
ELECTRONS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
GEV RANGE 100-1000
JETS
LUMINOSITY
MASS
MATRIX ELEMENTS
MONTE CARLO METHOD
MUONS
PROTON-PROTON INTERACTIONS
RESOLUTION
T QUARKS
TRANSVERSE ENERGY
ACCELERATORS
BARYON-BARYON INTERACTIONS
BEAUTY PARTICLES
CALCULATION METHODS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
GEV RANGE
HADRON-HADRON INTERACTIONS
INTERACTIONS
KINETIC ENERGY
LEPTONS
MEASURING INSTRUMENTS
NUCLEON-NUCLEON INTERACTIONS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
QUARKS
RADIATION DETECTORS
SYNCHROTRONS
TOP PARTICLES