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Study of high momentum eta ' production in B ->eta X-'(s)

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, JM; Hicheur, A; Karyotakis, Y; ... BABAR Collaboration; + view all (2004) Study of high momentum eta ' production in B ->eta X-'(s). PHYS REV LETT , 93 (6) , Article 061801. 10.1103/PhysRevLett.93.061801. Green open access

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Abstract

We measure the branching fraction for the charmless semi-inclusive process B-->eta(')X(s), where the eta(') meson has a momentum in the range 2.0 to 2.7 GeV/c in the Y(4S) center-of-mass frame and X-s represents a system comprising a kaon and zero to four pions. We find B(B-->eta(')X(s))=[3.9+/-0.8(stat)+/-0.5(syst)+/-0.8(model)]x10(-4). We also obtain the X-s mass spectrum and find that it fits models predicting high masses.

Type: Article
Title: Study of high momentum eta ' production in B ->eta X-'(s)
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.93.061801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.93.061801
Language: English
Additional information: The American Physical Society
Keywords: B-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/1303673
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