Search for CP violation in D±→ K0                        SK± and D±s→ K0Sπ± decays

LHCb Collaboration; R. Aaij; R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; J. Anderson; R. Andreassen; M. Andreotti; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; A. Badalov; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Bifani; N. Farley; P. Griffith; P. Ilten; I. R. Kenyon; C. Lazzeroni; A. Mazurov; J. McCarthy; C. J. Parkinson; L. Pescatore; D. Popov; N. K. Watson

doi:10.1007/JHEP10(2014)025

Search for CP violation in D^±→ K⁰ _SK^±and D^±_s→ K⁰_Sπ^±decays

LHCb Collaboration, R. Aaij, R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. AnderliniJ. Anderson, R. Andreassen, M. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Bifani, N. Farley, P. Griffith, P. Ilten, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, C. J. Parkinson, L. Pescatore, D. Popov, N. K. Watson

Physics and Astronomy

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Abstract

A search for CP violation in Cabibbo-suppressed D^±→ K⁰ _SK^±and D^±_s→ K⁰_Sπ^±decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb^-1, recorded by the LHCb experiment. The individual CP-violating asymmetries are measured to be A^D±_CP→ K⁰_SK^± = (+0.03 ± 0.17 ± 0.14)%

A^D±s_CP → K⁰_Sπ^± = (+0.38 ± 0.46 ± 0.17)%, assuming that CP violation in the Cabibbo-favoured decays is negligible. A combination of the measured asymmetries for the four decay modes D^±_(s)→ K⁰ _SK^±and D^±_(s)→ K⁰_Sπ^±gives the sum A^D±→K0SK±_CP + A^{D±s→K0Sπ±} _CP = (+0.41 ± 0.49 ± 0.26)%. In all cases, the first uncertainties are statistical and the second systematic. The results represent the most precise measurements of these asymmetries to date and show no evidence for CP violation.

Original language	English
Article number	25
Number of pages	18
Journal	Journal of High Energy Physics
Volume	2014
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2014)025
Publication status	Published - 3 Oct 2014

Keywords

CP violation
Hadron-Hadron Scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

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Cite this

LHCb Collaboration, Aaij, R., Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., ... Watson, N. K. (2014). Search for CP violation in D^±→ K⁰ _SK^±and D^±_s→ K⁰_Sπ^±decays. Journal of High Energy Physics, 2014(10), Article 25. https://doi.org/10.1007/JHEP10(2014)025

@article{5e820d3205de41dcb4743ca22c030c3c,

title = "Search for CP violation in D±→ K0 SK± and D±s→ K0Sπ± decays",

abstract = "A search for CP violation in Cabibbo-suppressed D±→ K0 SK±and D±s→ K0Sπ± decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb-1, recorded by the LHCb experiment. The individual CP-violating asymmetries are measured to be AD±CP → K0SK± = (+0.03 ± 0.17 ± 0.14)%AD±sCP → K0Sπ± = (+0.38 ± 0.46 ± 0.17)%, assuming that CP violation in the Cabibbo-favoured decays is negligible. A combination of the measured asymmetries for the four decay modes D±(s) → K0 SK±and D±(s) → K0Sπ± gives the sum AD±→K0SK±CP + AD±s→K0Sπ± CP = (+0.41 ± 0.49 ± 0.26)%. In all cases, the first uncertainties are statistical and the second systematic. The results represent the most precise measurements of these asymmetries to date and show no evidence for CP violation.",

keywords = "CP violation, Hadron-Hadron Scattering",

author = "{LHCb Collaboration} and R. Aaij 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 E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Bifani and N. Farley and P. Griffith and P. Ilten and Kenyon, {I. R.} and C. Lazzeroni and A. Mazurov and J. McCarthy and Parkinson, {C. J.} and L. Pescatore and D. Popov and Watson, {N. K.}",

year = "2014",

month = oct,

day = "3",

doi = "10.1007/JHEP10(2014)025",

language = "English",

volume = "2014",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "10",

}

LHCb Collaboration, Aaij, R, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreassen, R, Andreotti, M, Andrews, JE, Appleby, RB, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Bifani, S, Farley, N, Griffith, P, Ilten, P, Kenyon, IR, Lazzeroni, C, Mazurov, A, McCarthy, J, Parkinson, CJ, Pescatore, L, Popov, D & Watson, NK 2014, 'Search for CP violation in D^±→ K⁰ _SK^±and D^±_s→ K⁰_Sπ^±decays', Journal of High Energy Physics, vol. 2014, no. 10, 25. https://doi.org/10.1007/JHEP10(2014)025

TY - JOUR

T1 - Search for CP violation in D±→ K0 SK± and D±s→ K0Sπ± decays

AU - 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 - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Bifani, S.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Kenyon, I. R.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - McCarthy, J.

AU - Parkinson, C. J.

AU - Pescatore, L.

AU - Popov, D.

AU - Watson, N. K.

PY - 2014/10/3

Y1 - 2014/10/3

N2 - A search for CP violation in Cabibbo-suppressed D±→ K0 SK±and D±s→ K0Sπ± decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb-1, recorded by the LHCb experiment. The individual CP-violating asymmetries are measured to be AD±CP → K0SK± = (+0.03 ± 0.17 ± 0.14)%AD±sCP → K0Sπ± = (+0.38 ± 0.46 ± 0.17)%, assuming that CP violation in the Cabibbo-favoured decays is negligible. A combination of the measured asymmetries for the four decay modes D±(s) → K0 SK±and D±(s) → K0Sπ± gives the sum AD±→K0SK±CP + AD±s→K0Sπ± CP = (+0.41 ± 0.49 ± 0.26)%. In all cases, the first uncertainties are statistical and the second systematic. The results represent the most precise measurements of these asymmetries to date and show no evidence for CP violation.

AB - A search for CP violation in Cabibbo-suppressed D±→ K0 SK±and D±s→ K0Sπ± decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb-1, recorded by the LHCb experiment. The individual CP-violating asymmetries are measured to be AD±CP → K0SK± = (+0.03 ± 0.17 ± 0.14)%AD±sCP → K0Sπ± = (+0.38 ± 0.46 ± 0.17)%, assuming that CP violation in the Cabibbo-favoured decays is negligible. A combination of the measured asymmetries for the four decay modes D±(s) → K0 SK±and D±(s) → K0Sπ± gives the sum AD±→K0SK±CP + AD±s→K0Sπ± CP = (+0.41 ± 0.49 ± 0.26)%. In all cases, the first uncertainties are statistical and the second systematic. The results represent the most precise measurements of these asymmetries to date and show no evidence for CP violation.

KW - CP violation

KW - Hadron-Hadron Scattering

UR - http://www.scopus.com/inward/record.url?scp=84959855311&partnerID=8YFLogxK

U2 - 10.1007/JHEP10(2014)025

DO - 10.1007/JHEP10(2014)025

M3 - Article

AN - SCOPUS:84959855311

SN - 1126-6708

VL - 2014

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 25

ER -

Search for CP violation in D±→ K0 SK± and D±s→ K0Sπ± decays