Measurement of CP violation parameters and polarisation fractions in Bs 0→J/ψK decays

The CMS Collaboration

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Abstract: The first measurement of CP asymmetries in the decay (Formula Presented.) and an updated measurement of its branching fraction and polarisation fractions are presented. The results are obtained using data corresponding to an integrated luminosity of 3.0 fb−1 of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. Together with constraints from B0 → J/ψ ρ0, the results are used to constrain additional contributions due to penguin diagrams in the CP -violating phase ϕs, measured through Bs 0 decays to charmonium.[Figure not available: see fulltext.]

Original languageEnglish (US)
Article number82
Pages (from-to)1-38
Number of pages38
JournalJournal of High Energy Physics
Volume2015
Issue number11
DOIs
StatePublished - Nov 1 2015

Fingerprint

CP violation
protons
decay
polarization
center of mass
diagrams
luminosity
asymmetry
collisions
detectors
energy

Keywords

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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of CP violation parameters and polarisation fractions in Bs 0→J/ψK decays. / The CMS Collaboration.

In: Journal of High Energy Physics, Vol. 2015, No. 11, 82, 01.11.2015, p. 1-38.

Research output: Contribution to journalArticle

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N2 - Abstract: The first measurement of CP asymmetries in the decay (Formula Presented.) and an updated measurement of its branching fraction and polarisation fractions are presented. The results are obtained using data corresponding to an integrated luminosity of 3.0 fb−1 of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. Together with constraints from B0 → J/ψ ρ0, the results are used to constrain additional contributions due to penguin diagrams in the CP -violating phase ϕs, measured through Bs 0 decays to charmonium.[Figure not available: see fulltext.]

AB - Abstract: The first measurement of CP asymmetries in the decay (Formula Presented.) and an updated measurement of its branching fraction and polarisation fractions are presented. The results are obtained using data corresponding to an integrated luminosity of 3.0 fb−1 of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. Together with constraints from B0 → J/ψ ρ0, the results are used to constrain additional contributions due to penguin diagrams in the CP -violating phase ϕs, measured through Bs 0 decays to charmonium.[Figure not available: see fulltext.]

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KW - Branching fraction

KW - CP violation

KW - Flavor physics

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