Lifetime differences, direct CP violation, and partial widths in D0 meson decays to K+K- and π+ π-

S. E. Csorna; I. Danko; K. W. McLean; Z. Xu; R. Godang; G. Bonvicini; D. Cinabro; M. Dubrovin; S. McGee; A. Bornheim; E. Lipeles; S. P. Pappas; A. Shapiro; W. M. Sun; A. J. Weinstein; D. E. Jaffe; R. Mahapatra; G. Masek; H. P. Paar; D. M. Asner; T. S. Hill; R. J. Morrison; H. N. Nelson; R. A. Briere; G. P. Chen; T. Ferguson; H. Vogel; J. P. Alexander; C. Bebek; K. Berkelman; F. Blanc; V. Boisvert; D. G. Cassel; P. S. Drell; J. E. Duboscq; K. M. Ecklund; R. Ehrlich; L. Gibbons; B. Gittelman; S. W. Gray; D. L. Hartill; B. K. Heltsley; L. Hsu; C. D. Jones; J. Kandaswamy; D. L. Kreinick; M. Lohner; A. Magerkurth; H. Mahlke-Krüger; T. O. Meyer; N. B. Mistry; E. Nordberg; M. Palmer; J. R. Patterson; D. Peterson; J. Pivarski; D. Riley; H. Schwarthoff; J. G. Thayer; D. Urner; B. Valant-Spaight; G. Viehhauser; A. Warburton; M. Weinberger; S. B. Athar; P. Avery; C. Prescott; H. Stoeck; J. Yelton; G. Brandenburg; A. Ershov; D. Y.J. Kim; R. Wilson; K. Benslama; B. I. Eisenstein; J. Ernst; G. E. Gladding; G. D. Gollin; R. M. Hans; I. Karliner; N. Lowrey; M. A. Marsh; C. Plager; C. Sedlack; M. Selen; J. J. Thaler; J. Williams; K. W. Edwards; A. J. Sadoff; R. Ammar; A. Bean; D. Besson; X. Zhao; S. Anderson; V. V. Frolov; Y. Kubota; S. J. Lee; R. Poling; A. Smith; C. J. Stepaniak; J. Urheim; S. Ahmed; M. S. Alam; L. Jian; L. Ling; M. Saleem; S. Timm; F. Wappler; A. Anastassov; E. Eckhart; K. K. Gan; C. Gwon; T. Hart; K. Honscheid; D. Hufnagel; H. Kagan; R. Kass; T. K. Pedlar; J. B. Thayer; E. von Toerne; M. M. Zoeller; S. J. Richichi; H. Severini; P. Skubic; S. A. Dytman; V. Savinov; S. Chen; J. W. Hinson; J. Lee; D. H. Miller; V. Pavlunin; E. I. Shibata; I. P.J. Shipsey; D. Cronin-Hennessy; A. L. Lyon; W. Park; E. H. Thorndike; T. E. Coan; Y. S. Gao; F. Liu; Y. Maravin; I. Narsky; R. Stroynowski; J. Ye; M. Artuso; C. Boulahouache; K. Bukin; E. Dambasuren; G. Majumder; R. Mountain; T. Skwarnicki; S. Stone; J. C. Wang; H. Zhao; S. Kopp; M. Kostin; A. H. Mahmood

doi:10.1103/PhysRevD.65.092001

Lifetime differences, direct CP violation, and partial widths in D⁰ meson decays to K⁺K^- and π⁺ π^-

S. E. Csorna, I. Danko, K. W. McLean, Z. Xu, R. Godang, G. Bonvicini, D. Cinabro, M. Dubrovin, S. McGee, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, W. M. Sun, A. J. Weinstein, D. E. Jaffe, R. Mahapatra, G. Masek, H. P. Paar, D. M. AsnerT. S. Hill, R. J. Morrison, H. N. Nelson, R. A. Briere, G. P. Chen, T. Ferguson, H. Vogel, J. P. Alexander, C. Bebek, K. Berkelman, F. Blanc, V. Boisvert, D. G. Cassel, P. S. Drell, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, M. Lohner, A. Magerkurth, H. Mahlke-Krüger, T. O. Meyer, N. B. Mistry, E. Nordberg, M. Palmer, J. R. Patterson, D. Peterson, J. Pivarski, D. Riley, H. Schwarthoff, J. G. Thayer, D. Urner, B. Valant-Spaight, G. Viehhauser, A. Warburton, M. Weinberger, S. B. Athar, P. Avery, C. Prescott, H. Stoeck, J. Yelton, G. Brandenburg, A. Ershov, D. Y.J. Kim, R. Wilson, K. Benslama, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, I. Karliner, N. Lowrey, M. A. Marsh, C. Plager, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, K. W. Edwards, A. J. Sadoff, R. Ammar, A. Bean, D. Besson, X. Zhao, S. Anderson, V. V. Frolov, Y. Kubota, S. J. Lee, R. Poling, A. Smith, C. J. Stepaniak, J. Urheim, S. Ahmed, M. S. Alam, L. Jian, L. Ling, M. Saleem, S. Timm, F. Wappler, A. Anastassov, E. Eckhart, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, D. Hufnagel, H. Kagan, R. Kass, T. K. Pedlar, J. B. Thayer, E. von Toerne, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, S. A. Dytman, V. Savinov, S. Chen, J. W. Hinson, J. Lee, D. H. Miller, V. Pavlunin, E. I. Shibata, I. P.J. Shipsey, D. Cronin-Hennessy, A. L. Lyon, W. Park, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, Y. Maravin, I. Narsky, R. Stroynowski, J. Ye, M. Artuso, C. Boulahouache, K. Bukin, E. Dambasuren, G. Majumder, R. Mountain, T. Skwarnicki, S. Stone, J. C. Wang, H. Zhao, S. Kopp, M. Kostin, A. H. Mahmood

Department of Physics

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

72 Scopus citations

Abstract

We describe several measurements using the decays D⁰→K⁺K^- and π⁺π^-. We find the ratio of partial widths, Γ(D⁰→K⁺K^-)/Γ (D⁰→π⁺π^-), to be 2.96±0.16±0.15, where the first error is statistical and the second is systematic. We observe no evidence for direct CP violation, obtaining A_CP(KK)=(0.0±2.2±0.8)% and A_CP(ππ)=(1.9±3.2±0.8)%. In the limit of no CP violation we measure the mixing parameter y_CP=-0.012±0.025±0.014 by measuring the lifetime difference between D⁰→K⁺K^- or π⁺ π^- and the CP neutral state, D⁰→K^-π⁺. We see no evidence for mixing.

Original language	English (US)
Article number	092001
Pages (from-to)	920011-920018
Number of pages	8
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	65
Issue number	9 A
DOIs	https://doi.org/10.1103/PhysRevD.65.092001
State	Published - May 1 2002

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.65.092001

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Csorna, S. E., Danko, I., McLean, K. W., Xu, Z., Godang, R., Bonvicini, G., Cinabro, D., Dubrovin, M., McGee, S., Bornheim, A., Lipeles, E., Pappas, S. P., Shapiro, A., Sun, W. M., Weinstein, A. J., Jaffe, D. E., Mahapatra, R., Masek, G., Paar, H. P., ... Mahmood, A. H. (2002). Lifetime differences, direct CP violation, and partial widths in D⁰ meson decays to K⁺K^- and π⁺ π^-. Physical Review D - Particles, Fields, Gravitation and Cosmology, 65(9 A), 920011-920018. Article 092001. https://doi.org/10.1103/PhysRevD.65.092001

Csorna, SE, Danko, I, McLean, KW, Xu, Z, Godang, R, Bonvicini, G, Cinabro, D, Dubrovin, M, McGee, S, Bornheim, A, Lipeles, E, Pappas, SP, Shapiro, A, Sun, WM, Weinstein, AJ, Jaffe, DE, Mahapatra, R, Masek, G, Paar, HP, Asner, DM, Hill, TS, Morrison, RJ, Nelson, HN, Briere, RA, Chen, GP, Ferguson, T, Vogel, H, Alexander, JP, Bebek, C, Berkelman, K, Blanc, F, Boisvert, V, Cassel, DG, Drell, PS, Duboscq, JE, Ecklund, KM, Ehrlich, R, Gibbons, L, Gittelman, B, Gray, SW, Hartill, DL, Heltsley, BK, Hsu, L, Jones, CD, Kandaswamy, J, Kreinick, DL, Lohner, M, Magerkurth, A, Mahlke-Krüger, H, Meyer, TO, Mistry, NB, Nordberg, E, Palmer, M, Patterson, JR, Peterson, D, Pivarski, J, Riley, D, Schwarthoff, H, Thayer, JG, Urner, D, Valant-Spaight, B, Viehhauser, G, Warburton, A, Weinberger, M, Athar, SB, Avery, P, Prescott, C, Stoeck, H, Yelton, J, Brandenburg, G, Ershov, A, Kim, DYJ, Wilson, R, Benslama, K, Eisenstein, BI, Ernst, J, Gladding, GE, Gollin, GD, Hans, RM, Karliner, I, Lowrey, N, Marsh, MA, Plager, C, Sedlack, C, Selen, M, Thaler, JJ, Williams, J, Edwards, KW, Sadoff, AJ, Ammar, R, Bean, A, Besson, D, Zhao, X, Anderson, S, Frolov, VV, Kubota, Y, Lee, SJ, Poling, R, Smith, A, Stepaniak, CJ, Urheim, J, Ahmed, S, Alam, MS, Jian, L, Ling, L, Saleem, M, Timm, S, Wappler, F, Anastassov, A, Eckhart, E, Gan, KK, Gwon, C, Hart, T, Honscheid, K, Hufnagel, D, Kagan, H, Kass, R, Pedlar, TK, Thayer, JB, von Toerne, E, Zoeller, MM, Richichi, SJ, Severini, H, Skubic, P, Dytman, SA, Savinov, V, Chen, S, Hinson, JW, Lee, J, Miller, DH, Pavlunin, V, Shibata, EI, Shipsey, IPJ, Cronin-Hennessy, D, Lyon, AL, Park, W, Thorndike, EH, Coan, TE, Gao, YS, Liu, F, Maravin, Y, Narsky, I, Stroynowski, R, Ye, J, Artuso, M, Boulahouache, C, Bukin, K, Dambasuren, E, Majumder, G, Mountain, R, Skwarnicki, T, Stone, S, Wang, JC, Zhao, H, Kopp, S, Kostin, M & Mahmood, AH 2002, 'Lifetime differences, direct CP violation, and partial widths in D⁰ meson decays to K⁺K^- and π⁺ π^-', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 65, no. 9 A, 092001, pp. 920011-920018. https://doi.org/10.1103/PhysRevD.65.092001

@article{788e6957c3664b2a95284d975acd9079,

title = "Lifetime differences, direct CP violation, and partial widths in D0 meson decays to K+K- and π+ π-",

abstract = "We describe several measurements using the decays D0→K+K- and π+π-. We find the ratio of partial widths, Γ(D0→K+K-)/Γ (D0→π+π-), to be 2.96±0.16±0.15, where the first error is statistical and the second is systematic. We observe no evidence for direct CP violation, obtaining ACP(KK)=(0.0±2.2±0.8)% and ACP(ππ)=(1.9±3.2±0.8)%. In the limit of no CP violation we measure the mixing parameter yCP=-0.012±0.025±0.014 by measuring the lifetime difference between D0→K+K- or π+ π- and the CP neutral state, D0→K-π+. We see no evidence for mixing.",

author = "Csorna, {S. E.} and I. Danko and McLean, {K. W.} and Z. Xu and R. Godang and G. Bonvicini and D. Cinabro and M. Dubrovin and S. McGee and A. Bornheim and E. Lipeles and Pappas, {S. P.} and A. Shapiro and Sun, {W. M.} and Weinstein, {A. J.} and Jaffe, {D. E.} and R. Mahapatra and G. Masek and Paar, {H. P.} and Asner, {D. M.} and Hill, {T. S.} and Morrison, {R. J.} and Nelson, {H. N.} and Briere, {R. A.} and Chen, {G. P.} and T. Ferguson and H. Vogel and Alexander, {J. P.} and C. Bebek and K. Berkelman and F. Blanc and V. Boisvert and Cassel, {D. G.} and Drell, {P. S.} and Duboscq, {J. E.} and Ecklund, {K. M.} and R. Ehrlich and L. Gibbons and B. Gittelman and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and L. Hsu and Jones, {C. D.} and J. Kandaswamy and Kreinick, {D. L.} and M. Lohner and A. Magerkurth and H. Mahlke-Kr{\"u}ger and Meyer, {T. O.} and Mistry, {N. B.} and E. Nordberg and M. Palmer and Patterson, {J. R.} and D. Peterson and J. Pivarski and D. Riley and H. Schwarthoff and Thayer, {J. G.} and D. Urner and B. Valant-Spaight and G. Viehhauser and A. Warburton and M. Weinberger and Athar, {S. B.} and P. Avery and C. Prescott and H. Stoeck and J. Yelton and G. Brandenburg and A. Ershov and Kim, {D. Y.J.} and R. Wilson and K. Benslama and Eisenstein, {B. I.} and J. Ernst and Gladding, {G. E.} and Gollin, {G. D.} and Hans, {R. M.} and I. Karliner and N. Lowrey and Marsh, {M. A.} and C. Plager and C. Sedlack and M. Selen and Thaler, {J. J.} and J. Williams and Edwards, {K. W.} and Sadoff, {A. J.} and R. Ammar and A. Bean and D. Besson and X. Zhao and S. Anderson and Frolov, {V. V.} and Y. Kubota and Lee, {S. J.} and R. Poling and A. Smith and Stepaniak, {C. J.} and J. Urheim and S. Ahmed and Alam, {M. S.} and L. Jian and L. Ling and M. Saleem and S. Timm and F. Wappler and A. Anastassov and E. Eckhart and Gan, {K. K.} and C. Gwon and T. Hart and K. Honscheid and D. Hufnagel and H. Kagan and R. Kass and Pedlar, {T. K.} and Thayer, {J. B.} and {von Toerne}, E. and Zoeller, {M. M.} and Richichi, {S. J.} and H. Severini and P. Skubic and Dytman, {S. A.} and V. Savinov and S. Chen and Hinson, {J. W.} and J. Lee and Miller, {D. H.} and V. Pavlunin and Shibata, {E. I.} and Shipsey, {I. P.J.} and D. Cronin-Hennessy and Lyon, {A. L.} and W. Park and Thorndike, {E. H.} and Coan, {T. E.} and Gao, {Y. S.} and F. Liu and Y. Maravin and I. Narsky and R. Stroynowski and J. Ye and M. Artuso and C. Boulahouache and K. Bukin and E. Dambasuren and G. Majumder and R. Mountain and T. Skwarnicki and S. Stone and Wang, {J. C.} and H. Zhao and S. Kopp and M. Kostin and Mahmood, {A. H.}",

year = "2002",

month = may,

day = "1",

doi = "10.1103/PhysRevD.65.092001",

language = "English (US)",

volume = "65",

pages = "920011--920018",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "0556-2821",

publisher = "American Institute of Physics",

number = "9 A",

}

TY - JOUR

T1 - Lifetime differences, direct CP violation, and partial widths in D0 meson decays to K+K- and π+ π-

AU - Csorna, S. E.

AU - Danko, I.

AU - McLean, K. W.

AU - Xu, Z.

AU - Godang, R.

AU - Bonvicini, G.

AU - Cinabro, D.

AU - Dubrovin, M.

AU - McGee, S.

AU - Bornheim, A.

AU - Lipeles, E.

AU - Pappas, S. P.

AU - Shapiro, A.

AU - Sun, W. M.

AU - Weinstein, A. J.

AU - Jaffe, D. E.

AU - Mahapatra, R.

AU - Masek, G.

AU - Paar, H. P.

AU - Asner, D. M.

AU - Hill, T. S.

AU - Morrison, R. J.

AU - Nelson, H. N.

AU - Briere, R. A.

AU - Chen, G. P.

AU - Ferguson, T.

AU - Vogel, H.

AU - Alexander, J. P.

AU - Bebek, C.

AU - Berkelman, K.

AU - Blanc, F.

AU - Boisvert, V.

AU - Cassel, D. G.

AU - Drell, P. S.

AU - Duboscq, J. E.

AU - Ecklund, K. M.

AU - Ehrlich, R.

AU - Gibbons, L.

AU - Gittelman, B.

AU - Gray, S. W.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Hsu, L.

AU - Jones, C. D.

AU - Kandaswamy, J.

AU - Kreinick, D. L.

AU - Lohner, M.

AU - Magerkurth, A.

AU - Mahlke-Krüger, H.

AU - Meyer, T. O.

AU - Mistry, N. B.

AU - Nordberg, E.

AU - Palmer, M.

AU - Patterson, J. R.

AU - Peterson, D.

AU - Pivarski, J.

AU - Riley, D.

AU - Schwarthoff, H.

AU - Thayer, J. G.

AU - Urner, D.

AU - Valant-Spaight, B.

AU - Viehhauser, G.

AU - Warburton, A.

AU - Weinberger, M.

AU - Athar, S. B.

AU - Avery, P.

AU - Prescott, C.

AU - Stoeck, H.

AU - Yelton, J.

AU - Brandenburg, G.

AU - Ershov, A.

AU - Kim, D. Y.J.

AU - Wilson, R.

AU - Benslama, K.

AU - Eisenstein, B. I.

AU - Ernst, J.

AU - Gladding, G. E.

AU - Gollin, G. D.

AU - Hans, R. M.

AU - Karliner, I.

AU - Lowrey, N.

AU - Marsh, M. A.

AU - Plager, C.

AU - Sedlack, C.

AU - Selen, M.

AU - Thaler, J. J.

AU - Williams, J.

AU - Edwards, K. W.

AU - Sadoff, A. J.

AU - Ammar, R.

AU - Bean, A.

AU - Besson, D.

AU - Zhao, X.

AU - Anderson, S.

AU - Frolov, V. V.

AU - Kubota, Y.

AU - Lee, S. J.

AU - Poling, R.

AU - Smith, A.

AU - Stepaniak, C. J.

AU - Urheim, J.

AU - Ahmed, S.

AU - Alam, M. S.

AU - Jian, L.

AU - Ling, L.

AU - Saleem, M.

AU - Timm, S.

AU - Wappler, F.

AU - Anastassov, A.

AU - Eckhart, E.

AU - Gan, K. K.

AU - Gwon, C.

AU - Hart, T.

AU - Honscheid, K.

AU - Hufnagel, D.

AU - Kagan, H.

AU - Kass, R.

AU - Pedlar, T. K.

AU - Thayer, J. B.

AU - von Toerne, E.

AU - Zoeller, M. M.

AU - Richichi, S. J.

AU - Severini, H.

AU - Skubic, P.

AU - Dytman, S. A.

AU - Savinov, V.

AU - Chen, S.

AU - Hinson, J. W.

AU - Lee, J.

AU - Miller, D. H.

AU - Pavlunin, V.

AU - Shibata, E. I.

AU - Shipsey, I. P.J.

AU - Cronin-Hennessy, D.

AU - Lyon, A. L.

AU - Park, W.

AU - Thorndike, E. H.

AU - Coan, T. E.

AU - Gao, Y. S.

AU - Liu, F.

AU - Maravin, Y.

AU - Narsky, I.

AU - Stroynowski, R.

AU - Ye, J.

AU - Artuso, M.

AU - Boulahouache, C.

AU - Bukin, K.

AU - Dambasuren, E.

AU - Majumder, G.

AU - Mountain, R.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Wang, J. C.

AU - Zhao, H.

AU - Kopp, S.

AU - Kostin, M.

AU - Mahmood, A. H.

PY - 2002/5/1

Y1 - 2002/5/1

N2 - We describe several measurements using the decays D0→K+K- and π+π-. We find the ratio of partial widths, Γ(D0→K+K-)/Γ (D0→π+π-), to be 2.96±0.16±0.15, where the first error is statistical and the second is systematic. We observe no evidence for direct CP violation, obtaining ACP(KK)=(0.0±2.2±0.8)% and ACP(ππ)=(1.9±3.2±0.8)%. In the limit of no CP violation we measure the mixing parameter yCP=-0.012±0.025±0.014 by measuring the lifetime difference between D0→K+K- or π+ π- and the CP neutral state, D0→K-π+. We see no evidence for mixing.

AB - We describe several measurements using the decays D0→K+K- and π+π-. We find the ratio of partial widths, Γ(D0→K+K-)/Γ (D0→π+π-), to be 2.96±0.16±0.15, where the first error is statistical and the second is systematic. We observe no evidence for direct CP violation, obtaining ACP(KK)=(0.0±2.2±0.8)% and ACP(ππ)=(1.9±3.2±0.8)%. In the limit of no CP violation we measure the mixing parameter yCP=-0.012±0.025±0.014 by measuring the lifetime difference between D0→K+K- or π+ π- and the CP neutral state, D0→K-π+. We see no evidence for mixing.

UR - http://www.scopus.com/inward/record.url?scp=3542992521&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3542992521&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.65.092001

DO - 10.1103/PhysRevD.65.092001

M3 - Article

AN - SCOPUS:3542992521

SN - 0556-2821

VL - 65

SP - 920011

EP - 920018

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 9 A

M1 - 092001

ER -

Lifetime differences, direct CP violation, and partial widths in D⁰ meson decays to K⁺K^- and π⁺ π^-

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