Measurement of the Bs 0 → ϕϕ branching fraction and search for the decay B0 → ϕϕ

The Lhcb Collaboration

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the Bs 0 → ϕϕ branching fraction is measured to be (formula presented.)where fs/fd represents the ratio of the Bs 0to B0 production cross-sections, and the B0 → ϕK*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 → ϕϕ is also made. No signal is observed, and an upper limit on the branching fraction is set as(formula presented.)at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.

Original languageEnglish (US)
Article number53
JournalJournal of High Energy Physics
Volume2015
Issue number10
DOIs
StatePublished - Oct 1 2015

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decay
center of mass
confidence
luminosity
collisions
cross sections
energy

Keywords

  • B physics
  • Branching fraction
  • Flavor physics
  • Hadron-Hadron Scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of the Bs 0 → ϕϕ branching fraction and search for the decay B0 → ϕϕ. / The Lhcb Collaboration.

In: Journal of High Energy Physics, Vol. 2015, No. 10, 53, 01.10.2015.

Research output: Contribution to journalArticle

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abstract = "Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the Bs 0 → ϕϕ branching fraction is measured to be (formula presented.)where fs/fd represents the ratio of the Bs 0to B0 production cross-sections, and the B0 → ϕK*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 → ϕϕ is also made. No signal is observed, and an upper limit on the branching fraction is set as(formula presented.)at 90{\%} confidence level. This is a factor of seven improvement compared to the previous best limit.",
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AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

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AU - Artuso, Marina

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AB - Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the Bs 0 → ϕϕ branching fraction is measured to be (formula presented.)where fs/fd represents the ratio of the Bs 0to B0 production cross-sections, and the B0 → ϕK*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 → ϕϕ is also made. No signal is observed, and an upper limit on the branching fraction is set as(formula presented.)at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.

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KW - Flavor physics

KW - Hadron-Hadron Scattering

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