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Measurement of the B-0 -> J/psi pi(+)pi(-) branching fraction

Aubert, B; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; Robbe, P; ... BABAR Collaboration, ; + view all (2003) Measurement of the B-0 -> J/psi pi(+)pi(-) branching fraction. PHYS REV LETT , 90 (9) , Article 091801. 10.1103/PhysRevLett.90.091801. Green open access

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Abstract

We present a measurement of the branching fraction for the decay of the neutral B meson into the final state J/psipi(+)pi(-). The data set contains approximately 56x10(6) B (B) over bar pairs produced at the Y(4S) resonance and recorded with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) storage ring. The result of this analysis is B(B-0-->J/psipi(+)pi(-))=(4.6+/-0.7+/-0.6)x10(-5), where the first error is statistical and the second is systematic. In addition, we measure B(B-0-->J/psirho(0))=(1.6+/-0.6+/-0.4)x10(-5).

Type: Article
Title: Measurement of the B-0 -> J/psi pi(+)pi(-) branching fraction
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.90.091801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.90.091801
Language: English
Additional information: © 2003 The American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303616
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