Search for CP violation in Λb 0→pK and Λb 0→pπ decays

LHCb Collaboration

Research output: Contribution to journalArticle

Abstract

A search for CP violation in Λb 0→pK and Λb 0→pπ decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0fb−1. The CP -violating asymmetries are measured to be ACP pK =−0.020±0.013±0.019 and ACP =−0.035±0.017±0.020, and their difference ACP pK −ACP =0.014±0.022±0.010, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date.

Original languageEnglish
Pages (from-to)124-133
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume787
DOIs
Publication statusPublished - 10 Dec 2018

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CP violation
asymmetry
decay
luminosity
collisions
detectors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Search for CP violation in Λb 0→pK and Λb 0→pπ decays. / LHCb Collaboration.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 787, 10.12.2018, p. 124-133.

Research output: Contribution to journalArticle

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abstract = "A search for CP violation in Λb 0→pK− and Λb 0→pπ− decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0fb−1. The CP -violating asymmetries are measured to be ACP pK− =−0.020±0.013±0.019 and ACP pπ− =−0.035±0.017±0.020, and their difference ACP pK− −ACP pπ− =0.014±0.022±0.010, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date.",
author = "{LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. 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 G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d'Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and B. Batsukh and V. Battista and A. Bay and A. Mazurov and A. Petrov and S. Strokov",
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T1 - Search for CP violation in Λb 0→pK− and Λb 0→pπ− decays

AU - LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

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 - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d'Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Battista, V.

AU - Bay, A.

AU - Mazurov, A.

AU - Petrov, A.

AU - Strokov, S.

PY - 2018/12/10

Y1 - 2018/12/10

N2 - A search for CP violation in Λb 0→pK− and Λb 0→pπ− decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0fb−1. The CP -violating asymmetries are measured to be ACP pK− =−0.020±0.013±0.019 and ACP pπ− =−0.035±0.017±0.020, and their difference ACP pK− −ACP pπ− =0.014±0.022±0.010, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date.

AB - A search for CP violation in Λb 0→pK− and Λb 0→pπ− decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0fb−1. The CP -violating asymmetries are measured to be ACP pK− =−0.020±0.013±0.019 and ACP pπ− =−0.035±0.017±0.020, and their difference ACP pK− −ACP pπ− =0.014±0.022±0.010, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date.

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U2 - 10.1016/j.physletb.2018.10.039

DO - 10.1016/j.physletb.2018.10.039

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VL - 787

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EP - 133

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -