We study the decay B−→J/ψK−π+π− using 117×106 BB⎯⎯⎯ events collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e− asymmetric-energy storage ring. We measure the branching fractions ℬ (B−→J/ψK−π+π−)=(116±7(stat.)±9(syst.))×10−5 and ℬ (B−→X(3872)K−)× ℬ (X(3872)→J/ψπ+π−)=(1.28±0.41)×10−5 and find the mass of the X(3872) to be 3873.4±1.4  MeV/c2. We search for the hc narrow state in the decay B−→hcK−, hc→J/ψπ+π− and for the decay B−→J/ψD0π−, with D0→K−π+. We set the 90% C.L. limits ℬ(B−→hcK−)×ℬ(hc→J/ψπ+π−)<3.4×10−6 and ℬ(B−→J/ψD0π−)<5.2×10−5.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2005). Study of the B−→J/ψK−π+π− decay and measurement of the B−→X(3872)K− branching fraction. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 71(7), 1-7 [10.1103/PhysRevD.71.071103].

Study of the B−→J/ψK−π+π− decay and measurement of the B−→X(3872)K− branching fraction

PATRIGNANI, CLAUDIA;
2005

Abstract

We study the decay B−→J/ψK−π+π− using 117×106 BB⎯⎯⎯ events collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e− asymmetric-energy storage ring. We measure the branching fractions ℬ (B−→J/ψK−π+π−)=(116±7(stat.)±9(syst.))×10−5 and ℬ (B−→X(3872)K−)× ℬ (X(3872)→J/ψπ+π−)=(1.28±0.41)×10−5 and find the mass of the X(3872) to be 3873.4±1.4  MeV/c2. We search for the hc narrow state in the decay B−→hcK−, hc→J/ψπ+π− and for the decay B−→J/ψD0π−, with D0→K−π+. We set the 90% C.L. limits ℬ(B−→hcK−)×ℬ(hc→J/ψπ+π−)<3.4×10−6 and ℬ(B−→J/ψD0π−)<5.2×10−5.
2005
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2005). Study of the B−→J/ψK−π+π− decay and measurement of the B−→X(3872)K− branching fraction. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 71(7), 1-7 [10.1103/PhysRevD.71.071103].
Aubert, B; Barate, R.; Boutigny, D.; Couderc, F.; Gaillard, J.-M.; Hicheur, A.; Karyotakis, Y.; Lees, J.P.; Tisserand, V.; Zghiche, A.; Palano, A.; Po...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/551963
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