A study of the decay width difference in the b(s)/0-B̄(s)/0 system using φφ correlations Aleph collaboration

R. Barate; D. Decamp; P. Ghez; C. Goy; J. P. Lees; E. Merle; M. N. Minard; B. Pietrzyk; R. Alemany; S. Bravo; M. P. Casado; M. Chmeissani; J. M. Crespo; E. Fernandez; M. Fernandez-Bosman; L. Garrido; E. Graugés; M. Martinez; G. Merino; R. Miquel; L. M. Mir; A. Pacheco; H. Ruiz; A. Colaleo; D. Creanza; M. de Palma; G. Iaselli; G. Maggi; M. Maggi; S. Nuzzo; A. Ranieri; G. Raso; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; A. Tricomi; G. Zito; X. Huang; J. Lin; Q. Ouyang; T. Wang; Y. Xie; R. Xu; S. Xue; J. Zhang; L. Zhang; W. Zhao; D. Abbaneo; G. Boix; O. Buchmüller; M. Cattaneo; F. Cerutti; G. Dissertori; H. Drevermann; R. W. Forty; M. Frank; T. C. Greening; A. W. Halley; J. B. Hansen; J. Harvey; P. Janot; B. Jost; I. Lehraus; P. Mato; A. Minten; A. Moutoussi; F. Ranjard; L. Rolandi; D. Schlatter; M. Schmitt; O. Schneider; P. Spagnolo; W. Tejessy; F. Teubert; E. Tournefier; A. E. Wright; Z. Ajaltouni; F. Badaud; G. Chazelle; O. Deschamps; A. Falvard; P. Gay; C. Guicheney; P. Henrard; J. Jousset; B. Michel; S. Monteil; J. C. Montret; D. Pallin; P. Perret; F. Podlyski; J. D. Hansen; J. R. Hansen; P. H. Hansen; B. S. Nilsson; A. Wäänänen; G. Daskalakis; A. Kyriakis; C. Markou

doi:10.1016/S0370-2693(00)00750-4

A study of the decay width difference in the b(s)/⁰-B̄(s)/⁰ system using φφ correlations Aleph collaboration

R. Barate, D. Decamp, P. Ghez, C. Goy, J. P. Lees, E. Merle, M. N. Minard, B. Pietrzyk, R. Alemany, S. Bravo, M. P. Casado, M. Chmeissani, J. M. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. Graugés, M. Martinez, G. Merino, R. MiquelL. M. Mir, A. Pacheco, H. Ruiz, A. Colaleo, D. Creanza, M. de Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, G. Boix, O. Buchmüller, M. Cattaneo, F. Cerutti, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, T. C. Greening, A. W. Halley, J. B. Hansen, J. Harvey, P. Janot, B. Jost, I. Lehraus, P. Mato, A. Minten, A. Moutoussi, F. Ranjard, L. Rolandi, D. Schlatter, M. Schmitt, O. Schneider, P. Spagnolo, W. Tejessy, F. Teubert, E. Tournefier, A. E. Wright, Z. Ajaltouni, F. Badaud, G. Chazelle, O. Deschamps, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. C. Montret, D. Pallin, P. Perret, F. Podlyski, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, A. Wäänänen, G. Daskalakis, A. Kyriakis, C. Markou

Department of Physics

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Abstract

In a data sample of about four million hadronic Z decays recorded with the ALEPH detector from 1991 to 1995, the B(s)/0→D(s)/((*))+D(s)/((*))- decay is observed, based on tagging the final state with two φ mesons in the same hemisphere. The D(s)/((*))+D(s)/((*))- final state is mostly CP even and corresponds to the short-lived B(s)/0 mass eigenstate. The branching ratio of this decay is measured to be BR(B(s)/0(short) → D(s)/((*))+D(s)/((*))-) = (23 ± 10-9/+19)%. A measurement of the lifetime of the B(s)/0(short) gives 1.27 ± 0.33 ± 0.08 ps. The lifetime and branching ratio measurements provide two essentially independent methods of estimating the relative decay width difference ΔΓ/Γ in the B(s)/0-B̄(s)/0 system, corresponding to an average value ΔΓ/Γ = (25-14/+21)%. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	286-299
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	486
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(00)00750-4
Publication status	Published - 3 Aug 2000

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10.1016/S0370-2693(00)00750-4

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Barate, R., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Merle, E., Minard, M. N., Pietrzyk, B., Alemany, R., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Graugés, E., Martinez, M., Merino, G., ... Markou, C. (2000). A study of the decay width difference in the b(s)/⁰-B̄(s)/⁰ system using φφ correlations Aleph collaboration. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 486(3-4), 286-299. https://doi.org/10.1016/S0370-2693(00)00750-4

@article{c412eb6b1c3b4bbfa09a0f0af53818bd,

title = "A study of the decay width difference in the b(s)/0-{\=B}(s)/0 system using φφ correlations Aleph collaboration",

abstract = "In a data sample of about four million hadronic Z decays recorded with the ALEPH detector from 1991 to 1995, the B(s)/0→D(s)/((*))+D(s)/((*))- decay is observed, based on tagging the final state with two φ mesons in the same hemisphere. The D(s)/((*))+D(s)/((*))- final state is mostly CP even and corresponds to the short-lived B(s)/0 mass eigenstate. The branching ratio of this decay is measured to be BR(B(s)/0(short) → D(s)/((*))+D(s)/((*))-) = (23 ± 10-9/+19)%. A measurement of the lifetime of the B(s)/0(short) gives 1.27 ± 0.33 ± 0.08 ps. The lifetime and branching ratio measurements provide two essentially independent methods of estimating the relative decay width difference ΔΓ/Γ in the B(s)/0-{\=B}(s)/0 system, corresponding to an average value ΔΓ/Γ = (25-14/+21)%. (C) 2000 Elsevier Science B.V.",

author = "R. Barate and D. Decamp and P. Ghez and C. Goy and Lees, {J. P.} and E. Merle and Minard, {M. N.} and B. Pietrzyk and R. Alemany and S. Bravo and Casado, {M. P.} and M. Chmeissani and Crespo, {J. M.} and E. Fernandez and M. Fernandez-Bosman and L. Garrido and E. Graug{\'e}s and M. Martinez and G. Merino and R. Miquel and Mir, {L. M.} and A. Pacheco and H. Ruiz and A. Colaleo and D. Creanza and {de Palma}, M. and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and Q. Ouyang and T. Wang and Y. Xie and R. Xu and S. Xue and J. Zhang and L. Zhang and W. Zhao and D. Abbaneo and G. Boix and O. Buchm{\"u}ller and M. Cattaneo and F. Cerutti and G. Dissertori and H. Drevermann and Forty, {R. W.} and M. Frank and Greening, {T. C.} and Halley, {A. W.} and Hansen, {J. B.} and J. Harvey and P. Janot and B. Jost and I. Lehraus and P. Mato and A. Minten and A. Moutoussi and F. Ranjard and L. Rolandi and D. Schlatter and M. Schmitt and O. Schneider and P. Spagnolo and W. Tejessy and F. Teubert and E. Tournefier and Wright, {A. E.} and Z. Ajaltouni and F. Badaud and G. Chazelle and O. Deschamps and A. Falvard and P. Gay and C. Guicheney and P. Henrard and J. Jousset and B. Michel and S. Monteil and Montret, {J. C.} and D. Pallin and P. Perret and F. Podlyski and Hansen, {J. D.} and Hansen, {J. R.} and Hansen, {P. H.} and Nilsson, {B. S.} and A. W{\"a}{\"a}n{\"a}nen and G. Daskalakis and A. Kyriakis and C. Markou",

year = "2000",

month = aug,

day = "3",

doi = "10.1016/S0370-2693(00)00750-4",

language = "English",

volume = "486",

pages = "286--299",

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

issn = "0370-2693",

number = "3-4",

}

Barate, R, Decamp, D, Ghez, P, Goy, C, Lees, JP, Merle, E, Minard, MN, Pietrzyk, B, Alemany, R, Bravo, S, Casado, MP, Chmeissani, M, Crespo, JM, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Graugés, E, Martinez, M, Merino, G, Miquel, R, Mir, LM, Pacheco, A, Ruiz, H, Colaleo, A, Creanza, D, de Palma, M, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Boix, G, Buchmüller, O, Cattaneo, M, Cerutti, F, Dissertori, G, Drevermann, H, Forty, RW, Frank, M, Greening, TC, Halley, AW, Hansen, JB, Harvey, J, Janot, P, Jost, B, Lehraus, I, Mato, P, Minten, A, Moutoussi, A, Ranjard, F, Rolandi, L, Schlatter, D, Schmitt, M, Schneider, O, Spagnolo, P, Tejessy, W, Teubert, F, Tournefier, E, Wright, AE, Ajaltouni, Z, Badaud, F, Chazelle, G, Deschamps, O, Falvard, A, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, JC, Pallin, D, Perret, P, Podlyski, F, Hansen, JD, Hansen, JR, Hansen, PH, Nilsson, BS, Wäänänen, A, Daskalakis, G, Kyriakis, A & Markou, C 2000, 'A study of the decay width difference in the b(s)/⁰-B̄(s)/⁰ system using φφ correlations Aleph collaboration', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 486, no. 3-4, pp. 286-299. https://doi.org/10.1016/S0370-2693(00)00750-4

TY - JOUR

T1 - A study of the decay width difference in the b(s)/0-B̄(s)/0 system using φφ correlations Aleph collaboration

AU - Barate, R.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Merle, E.

AU - Minard, M. N.

AU - Pietrzyk, B.

AU - Alemany, R.

AU - Bravo, S.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, L.

AU - Graugés, E.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, L. M.

AU - Pacheco, A.

AU - Ruiz, H.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, R.

AU - Xue, S.

AU - Zhang, J.

AU - Zhang, L.

AU - Zhao, W.

AU - Abbaneo, D.

AU - Boix, G.

AU - Buchmüller, O.

AU - Cattaneo, M.

AU - Cerutti, F.

AU - Dissertori, G.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Greening, T. C.

AU - Halley, A. W.

AU - Hansen, J. B.

AU - Harvey, J.

AU - Janot, P.

AU - Jost, B.

AU - Lehraus, I.

AU - Mato, P.

AU - Minten, A.

AU - Moutoussi, A.

AU - Ranjard, F.

AU - Rolandi, L.

AU - Schlatter, D.

AU - Schmitt, M.

AU - Schneider, O.

AU - Spagnolo, P.

AU - Tejessy, W.

AU - Teubert, F.

AU - Tournefier, E.

AU - Wright, A. E.

AU - Ajaltouni, Z.

AU - Badaud, F.

AU - Chazelle, G.

AU - Deschamps, O.

AU - Falvard, A.

AU - Gay, P.

AU - Guicheney, C.

AU - Henrard, P.

AU - Jousset, J.

AU - Michel, B.

AU - Monteil, S.

AU - Montret, J. C.

AU - Pallin, D.

AU - Perret, P.

AU - Podlyski, F.

AU - Hansen, J. D.

AU - Hansen, J. R.

AU - Hansen, P. H.

AU - Nilsson, B. S.

AU - Wäänänen, A.

AU - Daskalakis, G.

AU - Kyriakis, A.

AU - Markou, C.

PY - 2000/8/3

Y1 - 2000/8/3

N2 - In a data sample of about four million hadronic Z decays recorded with the ALEPH detector from 1991 to 1995, the B(s)/0→D(s)/((*))+D(s)/((*))- decay is observed, based on tagging the final state with two φ mesons in the same hemisphere. The D(s)/((*))+D(s)/((*))- final state is mostly CP even and corresponds to the short-lived B(s)/0 mass eigenstate. The branching ratio of this decay is measured to be BR(B(s)/0(short) → D(s)/((*))+D(s)/((*))-) = (23 ± 10-9/+19)%. A measurement of the lifetime of the B(s)/0(short) gives 1.27 ± 0.33 ± 0.08 ps. The lifetime and branching ratio measurements provide two essentially independent methods of estimating the relative decay width difference ΔΓ/Γ in the B(s)/0-B̄(s)/0 system, corresponding to an average value ΔΓ/Γ = (25-14/+21)%. (C) 2000 Elsevier Science B.V.

AB - In a data sample of about four million hadronic Z decays recorded with the ALEPH detector from 1991 to 1995, the B(s)/0→D(s)/((*))+D(s)/((*))- decay is observed, based on tagging the final state with two φ mesons in the same hemisphere. The D(s)/((*))+D(s)/((*))- final state is mostly CP even and corresponds to the short-lived B(s)/0 mass eigenstate. The branching ratio of this decay is measured to be BR(B(s)/0(short) → D(s)/((*))+D(s)/((*))-) = (23 ± 10-9/+19)%. A measurement of the lifetime of the B(s)/0(short) gives 1.27 ± 0.33 ± 0.08 ps. The lifetime and branching ratio measurements provide two essentially independent methods of estimating the relative decay width difference ΔΓ/Γ in the B(s)/0-B̄(s)/0 system, corresponding to an average value ΔΓ/Γ = (25-14/+21)%. (C) 2000 Elsevier Science B.V.

U2 - 10.1016/S0370-2693(00)00750-4

DO - 10.1016/S0370-2693(00)00750-4

M3 - Article

VL - 486

SP - 286

EP - 299

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

IS - 3-4

ER -

A study of the decay width difference in the b(s)/0-B̄(s)/0 system using φφ correlations Aleph collaboration

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A study of the decay width difference in the b(s)/⁰-B̄(s)/⁰ system using φφ correlations Aleph collaboration