We measure the masses of b hadrons in exclusively reconstructed final states containing a J/psi ->mu(-)mu(+) decay using 220 pb(-1) of data collected by the CDF II experiment. We find: m(B(+))=5279.10 +/- 0.41((stat.))+/- 0.36((sys.)) MeV/c(2), m(B(0))=5279.63 +/- 0.53((stat.))+/- 0.33((sys.)) MeV/c(2), m(B(s)(0))=5366.01 +/- 0.73((stat.))+/- 0.33((sys.)) MeV/c(2), m(Lambda(0)(b))=5619.7 +/- 1.2((stat.))+/- 1.2((sys.)) MeV/c(2). m(B(+))-m(B(0))=-0.53 +/- 0.67((stat.))+/- 0.14((sys.)) MeV/c(2), m(B(s)(0))-m(B(0))=86.38 +/- 0.90((stat.))+/- 0.06((sys.)) MeV/c(2), m(Lambda(0)(b))-m(B(0))=339.2 +/- 1.4((stat.))+/- 0.1((sys.)) MeV/c(2). The measurements of the B(s)(0), Lambda(0)(b) mass, m(B(s)(0))-m(B(0)) and m(Lambda(0)(b))-m(B(0)) mass difference are of better precision than the current world averages.

D., A., J., A., T., A., T., A., M. G., A., D., A., et al. (2006). Measurement of bottom-quark hadron masses in exclusive J/psi decays with the CDF detector. PHYSICAL REVIEW LETTERS, 96(20) [10.1103/PhysRevLett.96.202001].

Measurement of bottom-quark hadron masses in exclusive J/psi decays with the CDF detector

PAOLETTI, RICCARDO;
2006-01-01

Abstract

We measure the masses of b hadrons in exclusively reconstructed final states containing a J/psi ->mu(-)mu(+) decay using 220 pb(-1) of data collected by the CDF II experiment. We find: m(B(+))=5279.10 +/- 0.41((stat.))+/- 0.36((sys.)) MeV/c(2), m(B(0))=5279.63 +/- 0.53((stat.))+/- 0.33((sys.)) MeV/c(2), m(B(s)(0))=5366.01 +/- 0.73((stat.))+/- 0.33((sys.)) MeV/c(2), m(Lambda(0)(b))=5619.7 +/- 1.2((stat.))+/- 1.2((sys.)) MeV/c(2). m(B(+))-m(B(0))=-0.53 +/- 0.67((stat.))+/- 0.14((sys.)) MeV/c(2), m(B(s)(0))-m(B(0))=86.38 +/- 0.90((stat.))+/- 0.06((sys.)) MeV/c(2), m(Lambda(0)(b))-m(B(0))=339.2 +/- 1.4((stat.))+/- 0.1((sys.)) MeV/c(2). The measurements of the B(s)(0), Lambda(0)(b) mass, m(B(s)(0))-m(B(0)) and m(Lambda(0)(b))-m(B(0)) mass difference are of better precision than the current world averages.
2006
D., A., J., A., T., A., T., A., M. G., A., D., A., et al. (2006). Measurement of bottom-quark hadron masses in exclusive J/psi decays with the CDF detector. PHYSICAL REVIEW LETTERS, 96(20) [10.1103/PhysRevLett.96.202001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39152
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