UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Observation of the decay B -> J/psi eta K and search for X(3872)-> J/psi eta

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, JM; Hicheur, A; Karyotakis, Y; ... BaBar Collaboration; + view all (2004) Observation of the decay B -> J/psi eta K and search for X(3872)-> J/psi eta. PHYS REV LETT , 93 (4) , Article 041801. 10.1103/PhysRevLett.93.041801. Green open access

[thumbnail of 1303666.pdf]
Preview
PDF
1303666.pdf

Download (347kB)

Abstract

We report the observation of the B meson decay B+/--->J/psietaK(+/-) and evidence for the decay B-0-->J/psietaK(S)(0), using 90x10(6) B(B) over bar events collected at the Y(4S) resonance with the BABAR detector at the SLAC PEP-II e(+)e(-) asymmetric-energy storage ring. We obtain branching fractions of B(B+/--->J/psietaK(+/-))=[10.8+/-2.3(stat)+/-2.4(syst)]x10(-5) and B(B-0-->J/psietaK(S)(0))=[8.4+/-2.6(stat)+/-2.7(syst)]x10(-5). We search for the new narrow mass state, the X(3872), recently reported by the Belle Collaboration, in the decay B+/--->X(3872)K+/-,X(3872)-->J/psieta and determine an upper limit of B[B+/--->X(3872)K+/--->J/psietaK(+/-)]<7.7x10(-6) at 90% confidence level.

Type: Article
Title: Observation of the decay B -> J/psi eta K and search for X(3872)-> J/psi eta
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.93.041801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.93.041801
Language: English
Additional information: The American Physical Society
Keywords: MESON DECAYS
UCL classification: UCL
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 > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303666
Downloads since deposit
47Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item