Measurement of CP asymmetries in D± → η′π± and Ds                             ±→η′π± decays

R. Aaij; B. Adeva; M. Adinolfi; 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; G. Andreassi; M. Andreotti; J. E. Andrews; R. B. Appleby; F. Archilli; P. d'Argent; J. Arnau Romeu; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; I. Babuschkin; S. Bachmann; J. J. Back; A. Badalov; C. Baesso; S. Baker; W. Baldini; S. Bifani; G. Chatzikonstantinidis; N. Farley; P. Griffith; I. R. Kenyon; C. Lazzeroni; A. Mazurov; J. McCarthy; L. Pescatore; A. Sergi; N. K. Watson; M. P. Williams; T. Williams; K. A. Zarebski; LHCb Collaboration

doi:10.1016/j.physletb.2017.05.013

Measurement of CP asymmetries in D^± → η^′π^± and D_s ^±→η^′π^± decays

R. Aaij, B. Adeva, M. Adinolfi, 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, G. Andreassi, M. Andreotti, J. E. AndrewsR. B. Appleby, F. Archilli, P. d'Argent, J. Arnau Romeu, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, I. Babuschkin, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, S. Baker, W. Baldini, S. Bifani, G. Chatzikonstantinidis, N. Farley, P. Griffith, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, L. Pescatore, A. Sergi, N. K. Watson, M. P. Williams, T. Williams, K. A. Zarebski, LHCb Collaboration

Physics and Astronomy

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Abstract

A search for CP violation in D^±→η^′π^± and D_s ^±→η^′π^± decays is performed using proton–proton collision data, corresponding to an integrated luminosity of 3 fb⁻¹, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The measured CP-violating charge asymmetries are A_CP(D^±→η^′π^±)=(−0.61±0.72±0.53±0.12)% and A_CP(D_s ^±→η^′π^±)=(−0.82±0.36±0.22±0.27)%, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the A_CP(D^±→K_S ⁰π^±) and A_CP(D_s ^±→ϕπ^±) measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.

Original language	English
Pages (from-to)	21-30
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	771
Early online date	12 May 2017
DOIs	https://doi.org/10.1016/j.physletb.2017.05.013
Publication status	Published - 10 Aug 2017

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Aaij_et_al_Measurement_of_CP_asymmetries_Physics_Leters_B_2017
Published in Physics Letters B on 12/05/2017 DOI: 10.1016/j.physletb.2017.05.013
Final published version, 753 KBLicence: Creative Commons: Attribution (CC BY)

https://www.sciencedirect.com/science/article/pii/S0370269317303702Licence: Creative Commons: Attribution (CC BY)

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Aaij, R., Adeva, B., Adinolfi, M., 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., Anderlini, L., Andreassi, G., Andreotti, M., ... LHCb Collaboration (2017). Measurement of CP asymmetries in D^± → η^′π^± and D_s ^±→η^′π^± decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 771, 21-30. https://doi.org/10.1016/j.physletb.2017.05.013

@article{91ca72dc54d44d06a67de13dd46ca484,

title = "Measurement of CP asymmetries in D± → η′π± and Ds ±→η′π± decays",

abstract = "A search for CP violation in D±→η′π± and Ds ±→η′π± decays is performed using proton–proton collision data, corresponding to an integrated luminosity of 3 fb−1, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The measured CP-violating charge asymmetries are ACP(D±→η′π±)=(−0.61±0.72±0.53±0.12)% and ACP(Ds ±→η′π±)=(−0.82±0.36±0.22±0.27)%, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the ACP(D±→KS 0π±) and ACP(Ds ±→ϕπ±) measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.",

author = "R. Aaij and B. Adeva and M. Adinolfi 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 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 E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and W. Baldini and S. Bifani and G. Chatzikonstantinidis and N. Farley and P. Griffith and Kenyon, {I. R.} and C. Lazzeroni and A. Mazurov and J. McCarthy and L. Pescatore and A. Sergi and Watson, {N. K.} and Williams, {M. P.} and T. Williams and Zarebski, {K. A.} and {LHCb Collaboration}",

year = "2017",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2017.05.013",

language = "English",

volume = "771",

pages = "21--30",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

Aaij, R, Adeva, B, Adinolfi, M, 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, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d'Argent, P, Arnau Romeu, J, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Baldini, W, Bifani, S, Chatzikonstantinidis, G, Farley, N, Griffith, P, Kenyon, IR, Lazzeroni, C, Mazurov, A, McCarthy, J, Pescatore, L, Sergi, A, Watson, NK, Williams, MP, Williams, T, Zarebski, KA & LHCb Collaboration 2017, 'Measurement of CP asymmetries in D^± → η^′π^± and D_s ^±→η^′π^± decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 771, pp. 21-30. https://doi.org/10.1016/j.physletb.2017.05.013

TY - JOUR

T1 - Measurement of CP asymmetries in D± → η′π± and Ds ±→η′π± decays

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

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 - 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 - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Baldini, W.

AU - Bifani, S.

AU - Chatzikonstantinidis, G.

AU - Farley, N.

AU - Griffith, P.

AU - Kenyon, I. R.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - McCarthy, J.

AU - Pescatore, L.

AU - Sergi, A.

AU - Watson, N. K.

AU - Williams, M. P.

AU - Williams, T.

AU - Zarebski, K. A.

AU - LHCb Collaboration

PY - 2017/8/10

Y1 - 2017/8/10

N2 - A search for CP violation in D±→η′π± and Ds ±→η′π± decays is performed using proton–proton collision data, corresponding to an integrated luminosity of 3 fb−1, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The measured CP-violating charge asymmetries are ACP(D±→η′π±)=(−0.61±0.72±0.53±0.12)% and ACP(Ds ±→η′π±)=(−0.82±0.36±0.22±0.27)%, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the ACP(D±→KS 0π±) and ACP(Ds ±→ϕπ±) measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.

AB - A search for CP violation in D±→η′π± and Ds ±→η′π± decays is performed using proton–proton collision data, corresponding to an integrated luminosity of 3 fb−1, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The measured CP-violating charge asymmetries are ACP(D±→η′π±)=(−0.61±0.72±0.53±0.12)% and ACP(Ds ±→η′π±)=(−0.82±0.36±0.22±0.27)%, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the ACP(D±→KS 0π±) and ACP(Ds ±→ϕπ±) measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.

UR - http://www.scopus.com/inward/record.url?scp=85034095342&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2017.05.013

DO - 10.1016/j.physletb.2017.05.013

M3 - Article

AN - SCOPUS:85034095342

SN - 0370-2693

VL - 771

SP - 21

EP - 30

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

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

ER -

Measurement of CP asymmetries in D± → η′π± and Ds ±→η′π± decays

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Measurement of CP asymmetries in D^± → η^′π^± and D_s ^±→η^′π^± decays