First measurement of the differential branching fraction and CP asymmetry of the B± → π±μ+ μ decay

The Lhcb Collaboration

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The differential branching fraction with respect to the dimuon invariant mass squared, and the CP asymmetry of the B± → π±μ+μ decay are measured for the first time. The CKM matrix elements |Vtd| and |Vts|, and the ratio |Vtd/Vts| are determined. The analysis is performed using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The total branching fraction and CP asymmetry of B± → π±μ+μ decays are measured to be (Formula presented.) where the first uncertainties are statistical and the second are systematic. These are the most precise measurements of these observables to date, and they are compatible with the predictions of the Standard Model.

Original languageEnglish (US)
Article number34
JournalJournal of High Energy Physics
Volume2015
Issue number10
DOIs
StatePublished - Oct 1 2015

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asymmetry
protons
decay
center of mass
luminosity
collisions
matrices
predictions
energy

Keywords

  • B physics
  • Branching fraction
  • CP violation
  • Hadron-Hadron Scattering
  • Rare decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

First measurement of the differential branching fraction and CP asymmetry of the B± → π±μ+ μ decay. / The Lhcb Collaboration.

In: Journal of High Energy Physics, Vol. 2015, No. 10, 34, 01.10.2015.

Research output: Contribution to journalArticle

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abstract = "The differential branching fraction with respect to the dimuon invariant mass squared, and the CP asymmetry of the B± → π±μ+μ− decay are measured for the first time. The CKM matrix elements |Vtd| and |Vts|, and the ratio |Vtd/Vts| are determined. The analysis is performed using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The total branching fraction and CP asymmetry of B± → π±μ+μ− decays are measured to be (Formula presented.) where the first uncertainties are statistical and the second are systematic. These are the most precise measurements of these observables to date, and they are compatible with the predictions of the Standard Model.",
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author = "{The Lhcb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and P. d’Argent and A. Artamonov and M. Artuso and Marina Artuso and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and Blusk, {Steven Roy} and Tomasz Skwarnicki and Sheldon Stone",
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AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

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AU - Ali, S.

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AU - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassi, G.

AU - Andreotti, M.

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AU - Aquines Gutierrez, O.

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AU - d’Argent, P.

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AU - Artuso, Marina

AU - Auriemma, G.

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AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

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AU - Barlow, R. J.

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AU - Battista, V.

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AU - Beddow, J.

AU - Bedeschi, F.

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AU - Stone, Sheldon

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KW - CP violation

KW - Hadron-Hadron Scattering

KW - Rare decay

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