Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States

R. Aaij; B. Adeva; M. Adinolfi; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; A. Alfonso Albero; 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; I. Babuschkin; W. Barter; A. Bitadze; S. Borghi; J. Brodzicka; C. Burr; L. Capriotti; S. De Capua; G. Dujany; E. Gersabeck; M. Gersabeck; L. Grillo; J. Harrison; C. Hombach; S. Klaver; G. Lafferty; K. Maguire; A. McNab; C. Parkes; A. Pearce; P. Rodriguez Perez; G. Sarpis; LHCb Collaboration

doi:10.1103/PhysRevLett.119.181805

Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States

R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. AndreottiJ. E. Andrews, R. B. Appleby, F. Archilli, P. D'Argent, J. Arnau Romeu, A. Artamonov, M. Artuso, E. Aslanides, I. Babuschkin, W. Barter, A. Bitadze, S. Borghi, J. Brodzicka, C. Burr, L. Capriotti, S. De Capua, G. Dujany, E. Gersabeck, M. Gersabeck, L. Grillo, J. Harrison, C. Hombach, S. Klaver, G. Lafferty, K. Maguire, A. McNab, C. Parkes, A. Pearce, P. Rodriguez Perez, G. Sarpis, LHCb Collaboration

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Abstract

The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated.

Original language	English
Article number	181805
Journal	Physical Review Letters
Volume	119
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.119.181805
Publication status	Published - 31 Oct 2017

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Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., ... LHCb Collaboration (2017). Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States. Physical Review Letters, 119(18), Article 181805. https://doi.org/10.1103/PhysRevLett.119.181805

@article{d07af46d44b2490f92540ff447c36ba2,

title = "Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States",

abstract = "The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated.",

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 {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 E. Aslanides and I. Babuschkin and W. Barter and A. Bitadze and S. Borghi and J. Brodzicka and C. Burr and L. Capriotti and {De Capua}, S. and G. Dujany and E. Gersabeck and M. Gersabeck and L. Grillo and J. Harrison and C. Hombach and S. Klaver and G. Lafferty and K. Maguire and A. McNab and C. Parkes and A. Pearce and {Rodriguez Perez}, P. and G. Sarpis and {LHCb Collaboration}",

year = "2017",

month = oct,

day = "31",

doi = "10.1103/PhysRevLett.119.181805",

language = "English",

volume = "119",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "18",

}

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, 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, Babuschkin, I, Barter, W, Bitadze, A, Borghi, S, Brodzicka, J, Burr, C, Capriotti, L, De Capua, S, Dujany, G, Gersabeck, E , Gersabeck, M, Grillo, L, Harrison, J, Hombach, C, Klaver, S, Lafferty, G, Maguire, K, McNab, A, Parkes, C, Pearce, A, Rodriguez Perez, P, Sarpis, G & LHCb Collaboration 2017, 'Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States', Physical Review Letters, vol. 119, no. 18, 181805. https://doi.org/10.1103/PhysRevLett.119.181805

TY - JOUR

T1 - Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States

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 - 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 - Aslanides, E.

AU - Babuschkin, I.

AU - Barter, W.

AU - Bitadze, A.

AU - Borghi, S.

AU - Brodzicka, J.

AU - Burr, C.

AU - Capriotti, L.

AU - De Capua, S.

AU - Dujany, G.

AU - Gersabeck, E.

AU - Gersabeck, M.

AU - Grillo, L.

AU - Harrison, J.

AU - Hombach, C.

AU - Klaver, S.

AU - Lafferty, G.

AU - Maguire, K.

AU - McNab, A.

AU - Parkes, C.

AU - Pearce, A.

AU - Rodriguez Perez, P.

AU - Sarpis, G.

AU - LHCb Collaboration

PY - 2017/10/31

Y1 - 2017/10/31

N2 - The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated.

AB - The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated.

UR - http://www.scopus.com/inward/record.url?scp=85032734376&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.119.181805

DO - 10.1103/PhysRevLett.119.181805

M3 - Article

AN - SCOPUS:85032734376

SN - 0031-9007

VL - 119

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

M1 - 181805

ER -

Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States

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