Branching fractions for D0 → K+K- and D0 → π+π-, and a search for CP violation in D0 decays

E. M. Aitala; S. Amato; J. C. Anjos; J. A. Appel; D. Ashery; S. Banerjee; I. Bediaga; G. Blaylock; S. B. Bracker; P. R. Burchat; R. A. Burnstein; T. Carter; H. S. Carvalho; N. J. Copty; L. M. Cremaldi; C. Darling; K. Denisenko; A. Fernandez; G. Fox; P. Gagnon; C. Gobel; K. Gounder; A. M. Halling; G. Herrera; G. Hurvits; C. James; P. A. Kasper; S. Kwan; D. C. Langs; J. Leslie; B. Lundberg; S. Maytal-Beck; B. Meadows; J. R.T. De Mello Neto; R. H. Milburn; J. M. De Miranda; A. Napier; A. Nguyen; A. B. D'Oliveira; K. O'Shaughnessy; K. C. Peng; L. P. Perera; M. V. Purohit; B. Quinn; S. Radeztsky; A. Rafatian; N. W. Reay; J. J. Reidy; A. C. Dos Reis; H. A. Rubin; D. A. Sanders; A. K.S. Santha; A. F.S. Santoro; A. J. Schwartz; M. Sheaff; R. A. Sidwell; A. J. Slaughter; M. D. Sokoloff; J. Solano; N. R. Stanton; K. Stenson; D. J. Summers; S. Takach; K. Thorne; A. K. Tripathi; S. Watanabe; R. Weiss-Babai; J. Wiener; N. Witchey; E. Wolin; D. Yi; S. Yoshida; R. Zaliznyak; C. Zhang

doi:10.1016/S0370-2693(97)01570-0

Branching fractions for D⁰ → K⁺K^- and D⁰ → π⁺π^-, and a search for CP violation in D⁰ decays

E. M. Aitala^*, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, N. J. Copty, L. M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, G. Fox, P. GagnonC. Gobel, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, S. Kwan, D. C. Langs, J. Leslie, B. Lundberg, S. Maytal-Beck, B. Meadows, J. R.T. De Mello Neto, R. H. Milburn, J. M. De Miranda, A. Napier, A. Nguyen, A. B. D'Oliveira, K. O'Shaughnessy, K. C. Peng, L. P. Perera, M. V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N. W. Reay, J. J. Reidy, A. C. Dos Reis, H. A. Rubin, D. A. Sanders, A. K.S. Santha, A. F.S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, M. D. Sokoloff, J. Solano, N. R. Stanton, K. Stenson, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, D. Yi, S. Yoshida, R. Zaliznyak, C. Zhang

^*この論文の責任著者

教養教育学系

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

39 被引用数 (Scopus)

抄録

Using the large hadroproduced charm sample collected in experiment E791 at Fermilab, we have measured ratios of branching fractions for the two-body singly-Cabibbo-suppressed charged decays of the D⁰: Γ(D⁰ → K⁺K^-)/Γ(D⁰ → K^-π⁺) = 0.109 ± 0.003 ± 0.003, Γ(D⁰ → π⁺π^-)/Γ(D⁰ → K^-π⁺) = 0.040 ± 0.002 ± 0.003, and Γ(D⁰ → K⁺K^-)/Γ(D⁰ → π⁺π^-) = 2.75 ± 0.15 ± 0.16. We have looked for differences in the decay rates of D⁰ and D̄⁰ to the CP eigenstates K⁺K^- and π⁺π^-, and have measured the CP asymmetry parameters A_CP(K⁺K^-) = -0.010 ± 0.049 ± 0.012 and A_CP(π⁺π^-) = -0.049 ± 0.078 ± 0.030, both consistent with zero.

本文言語	英語
ページ（範囲）	405-411
ページ数	7
ジャーナル	Physics Letters B
巻	421
号	1-4
DOI	https://doi.org/10.1016/S0370-2693(97)01570-0
出版ステータス	出版済み - 1998/03/05

ASJC Scopus 主題領域

核物理学および高エネルギー物理学

文献へのアクセス

10.1016/S0370-2693(97)01570-0

引用スタイル

Aitala, E. M., Amato, S., Anjos, J. C., Appel, J. A., Ashery, D., Banerjee, S., Bediaga, I., Blaylock, G., Bracker, S. B., Burchat, P. R., Burnstein, R. A., Carter, T., Carvalho, H. S., Copty, N. J., Cremaldi, L. M., Darling, C., Denisenko, K., Fernandez, A., Fox, G., ... Zhang, C. (1998). Branching fractions for D⁰ → K⁺K^- and D⁰ → π⁺π^-, and a search for CP violation in D⁰ decays. Physics Letters B, 421(1-4), 405-411. https://doi.org/10.1016/S0370-2693(97)01570-0

@article{aeebcaae5f484c1c9a1fee34e027e57c,

title = "Branching fractions for D0 → K+K- and D0 → π+π-, and a search for CP violation in D0 decays",

abstract = "Using the large hadroproduced charm sample collected in experiment E791 at Fermilab, we have measured ratios of branching fractions for the two-body singly-Cabibbo-suppressed charged decays of the D0: Γ(D0 → K+K-)/Γ(D0 → K-π+) = 0.109 ± 0.003 ± 0.003, Γ(D0 → π+π-)/Γ(D0 → K-π+) = 0.040 ± 0.002 ± 0.003, and Γ(D0 → K+K-)/Γ(D0 → π+π-) = 2.75 ± 0.15 ± 0.16. We have looked for differences in the decay rates of D0 and {\=D}0 to the CP eigenstates K+K- and π+π-, and have measured the CP asymmetry parameters ACP(K+K-) = -0.010 ± 0.049 ± 0.012 and ACP(π+π-) = -0.049 ± 0.078 ± 0.030, both consistent with zero.",

author = "Aitala, {E. M.} and S. Amato and Anjos, {J. C.} and Appel, {J. A.} and D. Ashery and S. Banerjee and I. Bediaga and G. Blaylock and Bracker, {S. B.} and Burchat, {P. R.} and Burnstein, {R. A.} and T. Carter and Carvalho, {H. S.} and Copty, {N. J.} and Cremaldi, {L. M.} and C. Darling and K. Denisenko and A. Fernandez and G. Fox and P. Gagnon and C. Gobel and K. Gounder and Halling, {A. M.} and G. Herrera and G. Hurvits and C. James and Kasper, {P. A.} and S. Kwan and Langs, {D. C.} and J. Leslie and B. Lundberg and S. Maytal-Beck and B. Meadows and {De Mello Neto}, {J. R.T.} and Milburn, {R. H.} and {De Miranda}, {J. M.} and A. Napier and A. Nguyen and D'Oliveira, {A. B.} and K. O'Shaughnessy and Peng, {K. C.} and Perera, {L. P.} and Purohit, {M. V.} and B. Quinn and S. Radeztsky and A. Rafatian and Reay, {N. W.} and Reidy, {J. J.} and {Dos Reis}, {A. C.} and Rubin, {H. A.} and Sanders, {D. A.} and Santha, {A. K.S.} and Santoro, {A. F.S.} and Schwartz, {A. J.} and M. Sheaff and Sidwell, {R. A.} and Slaughter, {A. J.} and Sokoloff, {M. D.} and J. Solano and Stanton, {N. R.} and K. Stenson and Summers, {D. J.} and S. Takach and K. Thorne and Tripathi, {A. K.} and S. Watanabe and R. Weiss-Babai and J. Wiener and N. Witchey and E. Wolin and D. Yi and S. Yoshida and R. Zaliznyak and C. Zhang",

note = "Funding Information: We gratefully acknowledge the assistance of the staffs of Fermilab and the participating institutions. This research was supported by the Brazilian Conselho Nacional de Desenvolvimento Cient{\'ı}fico e Tecnol{\'o}gico, CONACyT (Mexico), the Israeli Academy of Sciences and Humanities, the US Department of Energy, the US-Israel Binational Science Foundation, and the US National Science Foundation. Fermilab is operated by the Universities Research Association, Inc., under contract with the United States Department of Energy.",

year = "1998",

month = mar,

day = "5",

doi = "10.1016/S0370-2693(97)01570-0",

language = "英語",

volume = "421",

pages = "405--411",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-4",

}

Aitala, EM, Amato, S, Anjos, JC, Appel, JA, Ashery, D, Banerjee, S, Bediaga, I, Blaylock, G, Bracker, SB, Burchat, PR, Burnstein, RA, Carter, T, Carvalho, HS, Copty, NJ, Cremaldi, LM, Darling, C, Denisenko, K, Fernandez, A, Fox, G, Gagnon, P, Gobel, C, Gounder, K, Halling, AM, Herrera, G, Hurvits, G, James, C, Kasper, PA, Kwan, S, Langs, DC, Leslie, J, Lundberg, B, Maytal-Beck, S, Meadows, B, De Mello Neto, JRT, Milburn, RH, De Miranda, JM, Napier, A, Nguyen, A, D'Oliveira, AB, O'Shaughnessy, K, Peng, KC, Perera, LP, Purohit, MV, Quinn, B, Radeztsky, S, Rafatian, A, Reay, NW, Reidy, JJ, Dos Reis, AC, Rubin, HA, Sanders, DA, Santha, AKS, Santoro, AFS, Schwartz, AJ, Sheaff, M, Sidwell, RA, Slaughter, AJ, Sokoloff, MD, Solano, J, Stanton, NR, Stenson, K, Summers, DJ, Takach, S, Thorne, K, Tripathi, AK, Watanabe, S, Weiss-Babai, R, Wiener, J, Witchey, N, Wolin, E, Yi, D, Yoshida, S, Zaliznyak, R & Zhang, C 1998, 'Branching fractions for D⁰ → K⁺K^- and D⁰ → π⁺π^-, and a search for CP violation in D⁰ decays', Physics Letters B, vol. 421, no. 1-4, pp. 405-411. https://doi.org/10.1016/S0370-2693(97)01570-0

TY - JOUR

T1 - Branching fractions for D0 → K+K- and D0 → π+π-, and a search for CP violation in D0 decays

AU - Aitala, E. M.

AU - Amato, S.

AU - Anjos, J. C.

AU - Appel, J. A.

AU - Ashery, D.

AU - Banerjee, S.

AU - Bediaga, I.

AU - Blaylock, G.

AU - Bracker, S. B.

AU - Burchat, P. R.

AU - Burnstein, R. A.

AU - Carter, T.

AU - Carvalho, H. S.

AU - Copty, N. J.

AU - Cremaldi, L. M.

AU - Darling, C.

AU - Denisenko, K.

AU - Fernandez, A.

AU - Fox, G.

AU - Gagnon, P.

AU - Gobel, C.

AU - Gounder, K.

AU - Halling, A. M.

AU - Herrera, G.

AU - Hurvits, G.

AU - James, C.

AU - Kasper, P. A.

AU - Kwan, S.

AU - Langs, D. C.

AU - Leslie, J.

AU - Lundberg, B.

AU - Maytal-Beck, S.

AU - Meadows, B.

AU - De Mello Neto, J. R.T.

AU - Milburn, R. H.

AU - De Miranda, J. M.

AU - Napier, A.

AU - Nguyen, A.

AU - D'Oliveira, A. B.

AU - O'Shaughnessy, K.

AU - Peng, K. C.

AU - Perera, L. P.

AU - Purohit, M. V.

AU - Quinn, B.

AU - Radeztsky, S.

AU - Rafatian, A.

AU - Reay, N. W.

AU - Reidy, J. J.

AU - Dos Reis, A. C.

AU - Rubin, H. A.

AU - Sanders, D. A.

AU - Santha, A. K.S.

AU - Santoro, A. F.S.

AU - Schwartz, A. J.

AU - Sheaff, M.

AU - Sidwell, R. A.

AU - Slaughter, A. J.

AU - Sokoloff, M. D.

AU - Solano, J.

AU - Stanton, N. R.

AU - Stenson, K.

AU - Summers, D. J.

AU - Takach, S.

AU - Thorne, K.

AU - Tripathi, A. K.

AU - Watanabe, S.

AU - Weiss-Babai, R.

AU - Wiener, J.

AU - Witchey, N.

AU - Wolin, E.

AU - Yi, D.

AU - Yoshida, S.

AU - Zaliznyak, R.

AU - Zhang, C.

N1 - Funding Information: We gratefully acknowledge the assistance of the staffs of Fermilab and the participating institutions. This research was supported by the Brazilian Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico, CONACyT (Mexico), the Israeli Academy of Sciences and Humanities, the US Department of Energy, the US-Israel Binational Science Foundation, and the US National Science Foundation. Fermilab is operated by the Universities Research Association, Inc., under contract with the United States Department of Energy.

PY - 1998/3/5

Y1 - 1998/3/5

N2 - Using the large hadroproduced charm sample collected in experiment E791 at Fermilab, we have measured ratios of branching fractions for the two-body singly-Cabibbo-suppressed charged decays of the D0: Γ(D0 → K+K-)/Γ(D0 → K-π+) = 0.109 ± 0.003 ± 0.003, Γ(D0 → π+π-)/Γ(D0 → K-π+) = 0.040 ± 0.002 ± 0.003, and Γ(D0 → K+K-)/Γ(D0 → π+π-) = 2.75 ± 0.15 ± 0.16. We have looked for differences in the decay rates of D0 and D̄0 to the CP eigenstates K+K- and π+π-, and have measured the CP asymmetry parameters ACP(K+K-) = -0.010 ± 0.049 ± 0.012 and ACP(π+π-) = -0.049 ± 0.078 ± 0.030, both consistent with zero.

AB - Using the large hadroproduced charm sample collected in experiment E791 at Fermilab, we have measured ratios of branching fractions for the two-body singly-Cabibbo-suppressed charged decays of the D0: Γ(D0 → K+K-)/Γ(D0 → K-π+) = 0.109 ± 0.003 ± 0.003, Γ(D0 → π+π-)/Γ(D0 → K-π+) = 0.040 ± 0.002 ± 0.003, and Γ(D0 → K+K-)/Γ(D0 → π+π-) = 2.75 ± 0.15 ± 0.16. We have looked for differences in the decay rates of D0 and D̄0 to the CP eigenstates K+K- and π+π-, and have measured the CP asymmetry parameters ACP(K+K-) = -0.010 ± 0.049 ± 0.012 and ACP(π+π-) = -0.049 ± 0.078 ± 0.030, both consistent with zero.

UR - http://www.scopus.com/inward/record.url?scp=0348098879&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(97)01570-0

DO - 10.1016/S0370-2693(97)01570-0

M3 - 学術論文

AN - SCOPUS:0348098879

SN - 0370-2693

VL - 421

SP - 405

EP - 411

JO - Physics Letters B

JF - Physics Letters B

IS - 1-4

ER -

Branching fractions for D0 → K+K- and D0 → π+π-, and a search for CP violation in D0 decays

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Branching fractions for D⁰ → K⁺K^- and D⁰ → π⁺π^-, and a search for CP violation in D⁰ decays