Search for CP violation through an amplitude analysis of D                          
                        0
                                                  → K                          
                        +
                                                  K                          
                        −
                                                  π                          
                        +
                                                  π                          
                        −
                                                  decays

The Lhcb Collaboration

doi:10.1007/JHEP02(2019)126

Search for CP violation through an amplitude analysis of D ⁰ → K ⁺ K ⁻ π ⁺ π ⁻ decays

The Lhcb Collaboration

Department of Physics

Research output: Contribution to journal › Article

Abstract

A search for CP violation in the Cabibbo-suppressed D ⁰ → K ⁺ K ⁻ π ⁺ π ⁻ decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb ⁻¹ . The D ⁰ mesons are reconstructed from semileptonic b-hadron decays into D ⁰ μ ⁻ X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D ⁰ decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered.[Figure not available: see fulltext.]

Original language	English (US)
Article number	126
Journal	Journal of High Energy Physics
Volume	2019
Issue number	2
DOIs	https://doi.org/10.1007/JHEP02(2019)126
State	Published - Feb 1 2019

Fingerprint

CP violation

decay

mesons

luminosity

collisions

sensitivity

symmetry

Keywords

Charm physics
CP violation
Flavor physics
Hadron-Hadron scattering (experiments)

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

The Lhcb Collaboration (2019). Search for CP violation through an amplitude analysis of D ⁰ → K ⁺ K ⁻ π ⁺ π ⁻ decays Journal of High Energy Physics, 2019(2), [126]. https://doi.org/10.1007/JHEP02(2019)126

Search for CP violation through an amplitude analysis of D ⁰ → K ⁺ K ⁻ π ⁺ π ⁻ decays . / The Lhcb Collaboration.

In: Journal of High Energy Physics, Vol. 2019, No. 2, 126, 01.02.2019.

Research output: Contribution to journal › Article

The Lhcb Collaboration 2019, ' Search for CP violation through an amplitude analysis of D ⁰ → K ⁺ K ⁻ π ⁺ π ⁻ decays ', Journal of High Energy Physics, vol. 2019, no. 2, 126. https://doi.org/10.1007/JHEP02(2019)126

The Lhcb Collaboration. Search for CP violation through an amplitude analysis of D ⁰ → K ⁺ K ⁻ π ⁺ π ⁻ decays Journal of High Energy Physics. 2019 Feb 1;2019(2). 126. https://doi.org/10.1007/JHEP02(2019)126

The Lhcb Collaboration. / Search for CP violation through an amplitude analysis of D ⁰ → K ⁺ K ⁻ π ⁺ π ⁻ decays In: Journal of High Energy Physics. 2019 ; Vol. 2019, No. 2.

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abstract = "A search for CP violation in the Cabibbo-suppressed D 0 → K + K − π + π − decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb −1 . The D 0 mesons are reconstructed from semileptonic b-hadron decays into D 0 μ − X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D 0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1{\%} to 15{\%} depending on the amplitude considered.[Figure not available: see fulltext.]",

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author = "{The Lhcb Collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. 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 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 F. Archilli and {Arnau Romeu}, J. and A. Artamonov and Marina 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 Barrand, {G. C.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Battig and Blusk, {Steven Roy} and Matthew Rudolph and Tomasz Skwarnicki and Sheldon Stone",

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AU - Alexander, M.

AU - Alfonso Albero, A.

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 - Archilli, F.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, Marina

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

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AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barrand, G. C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Battig, A.

AU - Blusk, Steven Roy

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N2 - A search for CP violation in the Cabibbo-suppressed D 0 → K + K − π + π − decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb −1 . The D 0 mesons are reconstructed from semileptonic b-hadron decays into D 0 μ − X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D 0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered.[Figure not available: see fulltext.]

AB - A search for CP violation in the Cabibbo-suppressed D 0 → K + K − π + π − decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb −1 . The D 0 mesons are reconstructed from semileptonic b-hadron decays into D 0 μ − X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D 0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered.[Figure not available: see fulltext.]

KW - Charm physics

KW - CP violation

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

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Access to Document

10.1007/JHEP02(2019)126