We present measurements of the top quark mass using the m_T2, a variable related to the transverse mass in events with two missing particles. We use the template method applied to t anti-t dilepton events produced in p anti-p collisions at Fermilab's Tevatron and collected by the CDF detector. From a data sample corresponding to an integrated luminosity of 3.4 fb-1, we select 236 t anti-t candidate events. Using the m_T2 distribution, we measure the top quark mass to be M_top = 168.0+4.8_-4.0 (stat.) +/- 2.9 (syst.) GeV/c2. By combining the m_T2 with the reconstructed top mass distributions based on a neutrino weighting method, we measure M_top = 169.3 +/- 2.7 (stat.) +/- 3.2 (syst.) GeV/c2. This is the first application of the m_T2 variable in a mass measurement at a hadron collider.

T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2010). Measurement of the Top Quark Mass in the Dilepton Channel Using m_t2 at CDF. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 81, 031102-1-031102-9 [10.1103/PhysRevD.81.031102].

Measurement of the Top Quark Mass in the Dilepton Channel Using m_t2 at CDF

CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MARGAROLI, FABRIZIO;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2010

Abstract

We present measurements of the top quark mass using the m_T2, a variable related to the transverse mass in events with two missing particles. We use the template method applied to t anti-t dilepton events produced in p anti-p collisions at Fermilab's Tevatron and collected by the CDF detector. From a data sample corresponding to an integrated luminosity of 3.4 fb-1, we select 236 t anti-t candidate events. Using the m_T2 distribution, we measure the top quark mass to be M_top = 168.0+4.8_-4.0 (stat.) +/- 2.9 (syst.) GeV/c2. By combining the m_T2 with the reconstructed top mass distributions based on a neutrino weighting method, we measure M_top = 169.3 +/- 2.7 (stat.) +/- 3.2 (syst.) GeV/c2. This is the first application of the m_T2 variable in a mass measurement at a hadron collider.
2010
T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2010). Measurement of the Top Quark Mass in the Dilepton Channel Using m_t2 at CDF. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 81, 031102-1-031102-9 [10.1103/PhysRevD.81.031102].
T. AALTONEN; B.ALVAREZ GONZALEZV; S. AMERIO; D. AMIDEI; A. ANASTASSOV; A. ANNOVI; J. ANTOS; G. APOLLINARI; J.A. APPEL; A. APRESYAN; T. ARISAWA; A. AR...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/99506
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