Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs

S. Esen; A. J. Schwartz; I. Adachi; H. Aihara; K. Arinstein; V. Aulchenko; T. Aushev; T. Aziz; A. M. Bakich; V. Balagura; E. Barberio; A. Bay; M. Bischofberger; A. Bondar; A. Bozek; M. Bračko; T. E. Browder; M. C. Chang; P. Chang; A. Chen; P. Chen; B. G. Cheon; C. C. Chiang; Y. Choi; J. Dalseno; M. Dash; Z. Doležl; Z. Drásal; A. Drutskoy; S. Eidelman; P. Goldenzweig; B. Golob; H. Ha; J. Haba; T. Hara; K. Hayasaka; T. Higuchi; Y. Hoshi; W. S. Hou; Y. B. Hsiung; H. J. Hyun; T. Iijima; K. Inami; R. Itoh; M. Iwabuchi; N. J. Joshi; T. Julius; J. H. Kang; T. Kawasaki; H. Kichimi; H. J. Kim; H. O. Kim; J. H. Kim; Y. J. Kim; K. Kinoshita; B. R. Ko; P. Kodyš; S. Korpar; P. Križan; P. Krokovny; T. Kuhr; T. Kumita; Y. J. Kwon; S. H. Kyeong; J. S. Lange; S. H. Lee; Y. Liu; D. Liventsev; R. Louvot; A. Matyja; S. McOnie; H. Miyata; R. Mizuk; G. B. Mohanty; E. Nakano; M. Nakao; H. Nakazawa; Z. Natkaniec; S. Neubauer; S. Nishida; O. Nitoh; T. Ohshima; S. Okuno; S. L. Olsen; P. Pakhlov; C. W. Park; H. Park; H. K. Park; M. Petrič; L. E. Piilonen; M. Röhrken; S. Ryu; H. Sahoo; Y. Sakai; O. Schneider; C. Schwanda; K. Senyo; M. E. Sevior; M. Shapkin; C. P. Shen; J. G. Shiu; P. Smerkol; E. Solovieva; M. Starič; K. Sumisawa; T. Sumiyoshi; Y. Teramoto; K. Trabelsi; S. Uehara; Y. Unno; S. Uno; P. Urquijo; Y. Usov; G. Varner; K. E. Varvell; K. Vervink; C. H. Wang; M. Z. Wang; P. Wang; Y. Watanabe; R. Wedd; J. Wicht; E. Won; B. D. Yabsley; Y. Yamashita; Z. P. Zhang; V. Zhilich; A. Zupanc

doi:10.1103/PhysRevLett.105.201802

Observation of Bs0→Ds()+Ds()- using e⊃+e⊃- collisions and a determination of the B_s-B_̄s width difference ΔΓ_s

S. Esen^*
, A. J. Schwartz
, I. Adachi
, H. Aihara
, K. Arinstein
, V. Aulchenko
, T. Aushev
, T. Aziz
, A. M. Bakich
, V. Balagura
, E. Barberio
, A. Bay
, M. Bischofberger
, A. Bondar
, A. Bozek
, M. Bračko
, T. E. Browder
, M. C. Chang
, P. Chang
, A. Chen

P. Chen, B. G. Cheon, C. C. Chiang, Y. Choi, J. Dalseno, M. Dash, Z. Doležl, Z. Drásal, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, T. Higuchi, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, Y. J. Kwon, S. H. Kyeong, J. S. Lange, S. H. Lee, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, H. Miyata, R. Mizuk, G. B. Mohanty, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, C. W. Park, H. Park, H. K. Park, M. Petrič, L. E. Piilonen, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, P. Smerkol, E. Solovieva, M. Starič, K. Sumisawa, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26)%, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69)%, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85)%; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79)%. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓ_s/cosφ, where ΔΓ_s is the difference in widths between the two B_s-B_̄s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓ_s/Γ_s=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γ_s is the mean decay width.

Original language	English
Article number	201802
Journal	Physical review letters
Volume	105
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.105.201802
Publication status	Published - 2010 Nov 10

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.105.201802

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Esen, S., Schwartz, A. J., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., Aziz, T., Bakich, A. M., Balagura, V., Barberio, E., Bay, A., Bischofberger, M., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., Chang, M. C., Chang, P., ... Zupanc, A. (2010). Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the B_s-B_̄s width difference ΔΓ_s. Physical review letters, 105(20), Article 201802. https://doi.org/10.1103/PhysRevLett.105.201802

Esen, S, Schwartz, AJ, Adachi, I, Aihara, H, Arinstein, K, Aulchenko, V, Aushev, T, Aziz, T, Bakich, AM, Balagura, V, Barberio, E, Bay, A, Bischofberger, M, Bondar, A, Bozek, A, Bračko, M, Browder, TE, Chang, MC, Chang, P, Chen, A, Chen, P, Cheon, BG, Chiang, CC, Choi, Y, Dalseno, J, Dash, M, Doležl, Z, Drásal, Z, Drutskoy, A, Eidelman, S, Goldenzweig, P, Golob, B, Ha, H, Haba, J, Hara, T, Hayasaka, K, Higuchi, T, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Inami, K, Itoh, R, Iwabuchi, M, Joshi, NJ, Julius, T, Kang, JH, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, HO, Kim, JH, Kim, YJ, Kinoshita, K, Ko, BR, Kodyš, P, Korpar, S, Križan, P, Krokovny, P, Kuhr, T, Kumita, T, Kwon, YJ, Kyeong, SH, Lange, JS, Lee, SH, Liu, Y, Liventsev, D, Louvot, R, Matyja, A, McOnie, S, Miyata, H, Mizuk, R, Mohanty, GB, Nakano, E, Nakao, M, Nakazawa, H, Natkaniec, Z, Neubauer, S, Nishida, S, Nitoh, O, Ohshima, T, Okuno, S, Olsen, SL, Pakhlov, P, Park, CW, Park, H, Park, HK, Petrič, M, Piilonen, LE, Röhrken, M, Ryu, S, Sahoo, H, Sakai, Y, Schneider, O, Schwanda, C, Senyo, K, Sevior, ME, Shapkin, M, Shen, CP, Shiu, JG, Smerkol, P, Solovieva, E, Starič, M, Sumisawa, K, Sumiyoshi, T, Teramoto, Y, Trabelsi, K, Uehara, S, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Varvell, KE, Vervink, K, Wang, CH, Wang, MZ, Wang, P, Watanabe, Y, Wedd, R, Wicht, J, Won, E, Yabsley, BD, Yamashita, Y, Zhang, ZP, Zhilich, V & Zupanc, A 2010, 'Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the B_s-B_̄s width difference ΔΓ_s', Physical review letters, vol. 105, no. 20, 201802. https://doi.org/10.1103/PhysRevLett.105.201802

@article{233614c4757e40dc980dc2618cf71b1f,

title = "Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-{\=B}s width difference ΔΓs",

abstract = "We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26)\%, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69)\%, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85)\%; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79)\%. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓs/cosφ, where ΔΓs is the difference in widths between the two Bs-{\=B}s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓs/Γs=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γs is the mean decay width.",

author = "S. Esen and Schwartz, \{A. J.\} and I. Adachi and H. Aihara and K. Arinstein and V. Aulchenko and T. Aushev and T. Aziz and Bakich, \{A. M.\} and V. Balagura and E. Barberio and A. Bay and M. Bischofberger and A. Bondar and A. Bozek and M. Bra{\v c}ko and Browder, \{T. E.\} and Chang, \{M. C.\} and P. Chang and A. Chen and P. Chen and Cheon, \{B. G.\} and Chiang, \{C. C.\} and Y. Choi and J. Dalseno and M. Dash and Z. Dole{\v z}l and Z. Dr{\'a}sal and A. Drutskoy and S. Eidelman and P. Goldenzweig and B. Golob and H. Ha and J. Haba and T. Hara and K. Hayasaka and T. Higuchi and Y. Hoshi and Hou, \{W. S.\} and Hsiung, \{Y. B.\} and Hyun, \{H. J.\} and T. Iijima and K. Inami and R. Itoh and M. Iwabuchi and Joshi, \{N. J.\} and T. Julius and Kang, \{J. H.\} and T. Kawasaki and H. Kichimi and Kim, \{H. J.\} and Kim, \{H. O.\} and Kim, \{J. H.\} and Kim, \{Y. J.\} and K. Kinoshita and Ko, \{B. R.\} and P. Kody{\v s} and S. Korpar and P. Kri{\v z}an and P. Krokovny and T. Kuhr and T. Kumita and Kwon, \{Y. J.\} and Kyeong, \{S. H.\} and Lange, \{J. S.\} and Lee, \{S. H.\} and Y. Liu and D. Liventsev and R. Louvot and A. Matyja and S. McOnie and H. Miyata and R. Mizuk and Mohanty, \{G. B.\} and E. Nakano and M. Nakao and H. Nakazawa and Z. Natkaniec and S. Neubauer and S. Nishida and O. Nitoh and T. Ohshima and S. Okuno and Olsen, \{S. L.\} and P. Pakhlov and Park, \{C. W.\} and H. Park and Park, \{H. K.\} and M. Petri{\v c} and Piilonen, \{L. E.\} and M. R{\"o}hrken and S. Ryu and H. Sahoo and Y. Sakai and O. Schneider and C. Schwanda and K. Senyo and Sevior, \{M. E.\} and M. Shapkin and Shen, \{C. P.\} and Shiu, \{J. G.\} and P. Smerkol and E. Solovieva and M. Stari{\v c} and K. Sumisawa and T. Sumiyoshi and Y. Teramoto and K. Trabelsi and S. Uehara and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and Varvell, \{K. E.\} and K. Vervink and Wang, \{C. H.\} and Wang, \{M. Z.\} and P. Wang and Y. Watanabe and R. Wedd and J. Wicht and E. Won and Yabsley, \{B. D.\} and Y. Yamashita and Zhang, \{Z. P.\} and V. Zhilich and A. Zupanc",

year = "2010",

month = nov,

day = "10",

doi = "10.1103/PhysRevLett.105.201802",

language = "English",

volume = "105",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "20",

}

TY - JOUR

T1 - Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs

AU - Esen, S.

AU - Schwartz, A. J.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Barberio, E.

AU - Bay, A.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chang, P.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Chiang, C. C.

AU - Choi, Y.

AU - Dalseno, J.

AU - Dash, M.

AU - Doležl, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Ha, H.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, K.

AU - Higuchi, T.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Itoh, R.

AU - Iwabuchi, M.

AU - Joshi, N. J.

AU - Julius, T.

AU - Kang, J. H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, J. H.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumita, T.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lange, J. S.

AU - Lee, S. H.

AU - Liu, Y.

AU - Liventsev, D.

AU - Louvot, R.

AU - Matyja, A.

AU - McOnie, S.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Neubauer, S.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Pakhlov, P.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Röhrken, M.

AU - Ryu, S.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schwanda, C.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Smerkol, P.

AU - Solovieva, E.

AU - Starič, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Uehara, S.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vervink, K.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Wicht, J.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zupanc, A.

PY - 2010/11/10

Y1 - 2010/11/10

N2 - We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26)%, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69)%, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85)%; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79)%. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓs/cosφ, where ΔΓs is the difference in widths between the two Bs-B̄s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓs/Γs=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γs is the mean decay width.

AB - We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26)%, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69)%, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85)%; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79)%. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓs/cosφ, where ΔΓs is the difference in widths between the two Bs-B̄s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓs/Γs=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γs is the mean decay width.

UR - https://www.scopus.com/pages/publications/78149458814

U2 - 10.1103/PhysRevLett.105.201802

DO - 10.1103/PhysRevLett.105.201802

M3 - Article

AN - SCOPUS:78149458814

SN - 0031-9007

VL - 105

JO - Physical review letters

JF - Physical review letters

IS - 20

M1 - 201802

ER -

Observation of Bs0→Ds()+Ds()- using e⊃+e⊃- collisions and a determination of the B_s-B_̄s width difference ΔΓ_s

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