Measurement of indirect CP asymmetries in D0 → KK+ and D0 → ππ+ decays using semileptonic B decays

The Lhcb Collaboration

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Abstract: Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D0 → KK+ and D0 → ππ+ are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The D0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D0 or (Formula presented.). The asymmetries in effective lifetimes between D0 and (Formula presented.) decays, which are sensitive to indirect CP violation, are determined to be

(Formula presented.)

where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D0 decays.[Figure not available: see fulltext.]

Original languageEnglish (US)
JournalJournal of High Energy Physics
Volume2015
Issue number4
DOIs
StatePublished - Apr 1 2015

Fingerprint

asymmetry
decay
CP violation
decay rates
muons
mesons
luminosity
life (durability)
collisions

Keywords

  • Charm physics
  • CP violation
  • Hadron-Hadron Scattering
  • Lifetime

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of indirect CP asymmetries in D0 → KK+ and D0 → ππ+ decays using semileptonic B decays. / The Lhcb Collaboration.

In: Journal of High Energy Physics, Vol. 2015, No. 4, 01.04.2015.

Research output: Contribution to journalArticle

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title = "Measurement of indirect CP asymmetries in D0 → K−K+ and D0 → π−π+ decays using semileptonic B decays",
abstract = "Abstract: Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D0 → K−K+ and D0 → π−π+ are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The D0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D0 or (Formula presented.). The asymmetries in effective lifetimes between D0 and (Formula presented.) decays, which are sensitive to indirect CP violation, are determined to be(Formula presented.)where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D0 decays.[Figure not available: see fulltext.]",
keywords = "Charm physics, CP violation, Hadron-Hadron Scattering, Lifetime",
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 R. Andreassen and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli 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 S. Belogurov and Blusk, {Steven Roy} and Tomasz Skwarnicki and Sheldon Stone",
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T1 - Measurement of indirect CP asymmetries in D0 → K−K+ and D0 → π−π+ decays using semileptonic B decays

AU - The Lhcb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Artuso, Marina

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Blusk, Steven Roy

AU - Skwarnicki, Tomasz

AU - Stone, Sheldon

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Abstract: Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D0 → K−K+ and D0 → π−π+ are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The D0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D0 or (Formula presented.). The asymmetries in effective lifetimes between D0 and (Formula presented.) decays, which are sensitive to indirect CP violation, are determined to be(Formula presented.)where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D0 decays.[Figure not available: see fulltext.]

AB - Abstract: Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D0 → K−K+ and D0 → π−π+ are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The D0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D0 or (Formula presented.). The asymmetries in effective lifetimes between D0 and (Formula presented.) decays, which are sensitive to indirect CP violation, are determined to be(Formula presented.)where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D0 decays.[Figure not available: see fulltext.]

KW - Charm physics

KW - CP violation

KW - Hadron-Hadron Scattering

KW - Lifetime

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U2 - 10.1007/JHEP04(2015)043

DO - 10.1007/JHEP04(2015)043

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JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

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