First observation of τ → 3πηντ and τ → f1πντ decays

T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, M. Palmer, M. Selen, J. J. Thaler, K. W. Edwards, A. Bellerive, R. Janicek, D. B. MacFarlane, P. M. Patel, A. J. Sadoff, R. Ammar, P. BaringerA. Bean, D. Besson, D. Coppage, C. Darling, R. Davis, N. Hancock, S. Kotov, I. Kravchenko, N. Kwak, S. Anderson, Y. Kubota, S. J. Lee, J. J. O'Neill, S. Patton, R. Poling, T. Riehle, V. Savinov, A. Smith, M. S. Alam, S. B. Athar, Z. Ling, A. H. Mahmood, H. Severini, S. Timm, F. Wappler, A. Anastassov, S. Blinov, J. E. Duboscq, D. Fujino, K. K. Gan, T. Hart, K. Honscheid, H. Kagan, R. Kass, J. Lee, M. B. Spencer, M. Sung, A. Undrus, R. Wanke, A. Wolf, M. M. Zoeller, B. Nemati, S. J. Richichi, W. R. Ross, P. Skubic, M. Bishai, J. Fast, E. Gerndt, J. W. Hinson, N. Menon, D. H. Miller, E. I. Shibata, I. P J Shipsey, M. Yurko, L. Gibbons, S. Glenn, S. D. Johnson, Y. Kwon, S. Roberts, E. H. Thorndike, C. P. Jessop, K. Lingel, H. Marsiske, M. L. Perl, D. Ugolini, R. Wang, X. Zhou, T. E. Coan, V. Fadeyev, I. Korolkov, Y. Maravin, I. Narsky, V. Shelkov, J. Staeck, R. Stroynowski, I. Volobouev, J. Ye, M. Artuso, A. Efimov, M. Gao, M. Goldberg, D. He, S. Kopp, G. C. Moneti, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, G. Viehhauser, X. Xing, J. Bartelt, S. E. Csorna, V. Jain, K. W. McLean, S. Marka, R. Godang, K. Kinoshita, I. C. Lai, P. Pomianowski, S. Schrenk, G. Bonvicini, D. Cinabro, R. Greene, L. P. Perera, G. J. Zhou, B. Barish, M. Chadha, S. Chan, G. Eigen, J. S. Miller, C. O'Grady, M. Schmidtler, J. Urheim, A. J. Weinstein, F. Würthwein, Daniel Bliss, G. Masek, H. P. Paar, S. Prell, V. Sharma, D. M. Asner, J. Gronberg, T. S. Hill, R. Kutschke, D. J. Lange, S. Menary, R. J. Morrison, H. N. Nelson, T. K. Nelson, C. Qiao, J. D. Richman, D. Roberts, A. Ryd, M. S. Witherell, R. Balest, B. H. Behrens, W. T. Ford, H. Park, J. Roy, J. G. Smith, J. P. Alexander, C. Bebek, B. E. Berger, K. Berkelman, K. Bloom, D. G. Cassel, H. A. Cho, D. M. Coffman, D. S. Crowcroft, M. Dickson, P. S. Drell, K. M. Ecklund, R. Ehrlich, A. D. Foland, P. Gaidarev, R. S. Galik, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, P. I. Hopman, J. Kandaswamy, P. C. Kim, D. L. Kreinick, T. Lee, Y. Liu, G. S. Ludwig, J. Masui, J. Mevissen, N. B. Mistry, C. R. Ng, E. Nordberg, M. Ogg, J. R. Patterson, D. Peterson, D. Riley, A. Soffer, B. Valant-Spaight, C. Ward, M. Athanas, P. Avery, C. D. Jones, M. Lohner, C. Prescott, J. Yelton, J. Zheng, G. Brandenburg, R. A. Briere, A. Ershov, Y. S. Gao, D. Y J Kim, R. Wilson, H. Yamamoto, T. E. Browder, F. Li, Y. Li, J. L. Rodriguez

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We have observed new channels for τ decays with an η in the final state. We study 3-prong tau decays, using the η → γγ and η → 3π0 decay modes and 1-prong decays with two π0's using the η → γγ channel. The measured branching fractions are B(τ- → π- π- π+ ηντ) = (3.4-0.5 +0.6 ± 0.6) × 10-4 and B(τ- → π-0ηντ) = (1.4 ± 0.6 ± 0.3) × 10-4. We observe clear evidence for f1 → ηππ substructure and measure B(τ- → f1π- ντ) = (5.8;-1.3 +1.4 ± 1.8) × 10-4. We have also searched for η′(958) production and obtain 90% C.L. upper limits B(τ- → π- η′ ντ) < 7.4 × 10-5 and B(τ- → π- π0 η′ντ < 8.0 × 10-5.

Original languageEnglish (US)
Pages (from-to)2406-2410
Number of pages5
JournalPhysical Review Letters
Volume79
Issue number13
StatePublished - 1997
Externally publishedYes

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decay
substructures

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Bergfeld, T., Eisenstein, B. I., Ernst, J., Gladding, G. E., Gollin, G. D., Hans, R. M., ... Rodriguez, J. L. (1997). First observation of τ → 3πηντ and τ → f1πντ decays. Physical Review Letters, 79(13), 2406-2410.

First observation of τ → 3πηντ and τ → f1πντ decays. / Bergfeld, T.; Eisenstein, B. I.; Ernst, J.; Gladding, G. E.; Gollin, G. D.; Hans, R. M.; Johnson, E.; Karliner, I.; Marsh, M. A.; Palmer, M.; Selen, M.; Thaler, J. J.; Edwards, K. W.; Bellerive, A.; Janicek, R.; MacFarlane, D. B.; Patel, P. M.; Sadoff, A. J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Darling, C.; Davis, R.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, N.; Anderson, S.; Kubota, Y.; Lee, S. J.; O'Neill, J. J.; Patton, S.; Poling, R.; Riehle, T.; Savinov, V.; Smith, A.; Alam, M. S.; Athar, S. B.; Ling, Z.; Mahmood, A. H.; Severini, H.; Timm, S.; Wappler, F.; Anastassov, A.; Blinov, S.; Duboscq, J. E.; Fujino, D.; Gan, K. K.; Hart, T.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Spencer, M. B.; Sung, M.; Undrus, A.; Wanke, R.; Wolf, A.; Zoeller, M. M.; Nemati, B.; Richichi, S. J.; Ross, W. R.; Skubic, P.; Bishai, M.; Fast, J.; Gerndt, E.; Hinson, J. W.; Menon, N.; Miller, D. H.; Shibata, E. I.; Shipsey, I. P J; Yurko, M.; Gibbons, L.; Glenn, S.; Johnson, S. D.; Kwon, Y.; Roberts, S.; Thorndike, E. H.; Jessop, C. P.; Lingel, K.; Marsiske, H.; Perl, M. L.; Ugolini, D.; Wang, R.; Zhou, X.; Coan, T. E.; Fadeyev, V.; Korolkov, I.; Maravin, Y.; Narsky, I.; Shelkov, V.; Staeck, J.; Stroynowski, R.; Volobouev, I.; Ye, J.; Artuso, M.; Efimov, A.; Gao, M.; Goldberg, M.; He, D.; Kopp, S.; Moneti, G. C.; Mountain, R.; Schuh, S.; Skwarnicki, T.; Stone, S.; Viehhauser, G.; Xing, X.; Bartelt, J.; Csorna, S. E.; Jain, V.; McLean, K. W.; Marka, S.; Godang, R.; Kinoshita, K.; Lai, I. C.; Pomianowski, P.; Schrenk, S.; Bonvicini, G.; Cinabro, D.; Greene, R.; Perera, L. P.; Zhou, G. J.; Barish, B.; Chadha, M.; Chan, S.; Eigen, G.; Miller, J. S.; O'Grady, C.; Schmidtler, M.; Urheim, J.; Weinstein, A. J.; Würthwein, F.; Bliss, Daniel; Masek, G.; Paar, H. P.; Prell, S.; Sharma, V.; Asner, D. M.; Gronberg, J.; Hill, T. S.; Kutschke, R.; Lange, D. J.; Menary, S.; Morrison, R. J.; Nelson, H. N.; Nelson, T. K.; Qiao, C.; Richman, J. D.; Roberts, D.; Ryd, A.; Witherell, M. S.; Balest, R.; Behrens, B. H.; Ford, W. T.; Park, H.; Roy, J.; Smith, J. G.; Alexander, J. P.; Bebek, C.; Berger, B. E.; Berkelman, K.; Bloom, K.; Cassel, D. G.; Cho, H. A.; Coffman, D. M.; Crowcroft, D. S.; Dickson, M.; Drell, P. S.; Ecklund, K. M.; Ehrlich, R.; Foland, A. D.; Gaidarev, P.; Galik, R. S.; Gittelman, B.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Hopman, P. I.; Kandaswamy, J.; Kim, P. C.; Kreinick, D. L.; Lee, T.; Liu, Y.; Ludwig, G. S.; Masui, J.; Mevissen, J.; Mistry, N. B.; Ng, C. R.; Nordberg, E.; Ogg, M.; Patterson, J. R.; Peterson, D.; Riley, D.; Soffer, A.; Valant-Spaight, B.; Ward, C.; Athanas, M.; Avery, P.; Jones, C. D.; Lohner, M.; Prescott, C.; Yelton, J.; Zheng, J.; Brandenburg, G.; Briere, R. A.; Ershov, A.; Gao, Y. S.; Kim, D. Y J; Wilson, R.; Yamamoto, H.; Browder, T. E.; Li, F.; Li, Y.; Rodriguez, J. L.

In: Physical Review Letters, Vol. 79, No. 13, 1997, p. 2406-2410.

Research output: Contribution to journalArticle

Bergfeld, T, Eisenstein, BI, Ernst, J, Gladding, GE, Gollin, GD, Hans, RM, Johnson, E, Karliner, I, Marsh, MA, Palmer, M, Selen, M, Thaler, JJ, Edwards, KW, Bellerive, A, Janicek, R, MacFarlane, DB, Patel, PM, Sadoff, AJ, Ammar, R, Baringer, P, Bean, A, Besson, D, Coppage, D, Darling, C, Davis, R, Hancock, N, Kotov, S, Kravchenko, I, Kwak, N, Anderson, S, Kubota, Y, Lee, SJ, O'Neill, JJ, Patton, S, Poling, R, Riehle, T, Savinov, V, Smith, A, Alam, MS, Athar, SB, Ling, Z, Mahmood, AH, Severini, H, Timm, S, Wappler, F, Anastassov, A, Blinov, S, Duboscq, JE, Fujino, D, Gan, KK, Hart, T, Honscheid, K, Kagan, H, Kass, R, Lee, J, Spencer, MB, Sung, M, Undrus, A, Wanke, R, Wolf, A, Zoeller, MM, Nemati, B, Richichi, SJ, Ross, WR, Skubic, P, Bishai, M, Fast, J, Gerndt, E, Hinson, JW, Menon, N, Miller, DH, Shibata, EI, Shipsey, IPJ, Yurko, M, Gibbons, L, Glenn, S, Johnson, SD, Kwon, Y, Roberts, S, Thorndike, EH, Jessop, CP, Lingel, K, Marsiske, H, Perl, ML, Ugolini, D, Wang, R, Zhou, X, Coan, TE, Fadeyev, V, Korolkov, I, Maravin, Y, Narsky, I, Shelkov, V, Staeck, J, Stroynowski, R, Volobouev, I, Ye, J, Artuso, M, Efimov, A, Gao, M, Goldberg, M, He, D, Kopp, S, Moneti, GC, Mountain, R, Schuh, S, Skwarnicki, T, Stone, S, Viehhauser, G, Xing, X, Bartelt, J, Csorna, SE, Jain, V, McLean, KW, Marka, S, Godang, R, Kinoshita, K, Lai, IC, Pomianowski, P, Schrenk, S, Bonvicini, G, Cinabro, D, Greene, R, Perera, LP, Zhou, GJ, Barish, B, Chadha, M, Chan, S, Eigen, G, Miller, JS, O'Grady, C, Schmidtler, M, Urheim, J, Weinstein, AJ, Würthwein, F, Bliss, D, Masek, G, Paar, HP, Prell, S, Sharma, V, Asner, DM, Gronberg, J, Hill, TS, Kutschke, R, Lange, DJ, Menary, S, Morrison, RJ, Nelson, HN, Nelson, TK, Qiao, C, Richman, JD, Roberts, D, Ryd, A, Witherell, MS, Balest, R, Behrens, BH, Ford, WT, Park, H, Roy, J, Smith, JG, Alexander, JP, Bebek, C, Berger, BE, Berkelman, K, Bloom, K, Cassel, DG, Cho, HA, Coffman, DM, Crowcroft, DS, Dickson, M, Drell, PS, Ecklund, KM, Ehrlich, R, Foland, AD, Gaidarev, P, Galik, RS, Gittelman, B, Gray, SW, Hartill, DL, Heltsley, BK, Hopman, PI, Kandaswamy, J, Kim, PC, Kreinick, DL, Lee, T, Liu, Y, Ludwig, GS, Masui, J, Mevissen, J, Mistry, NB, Ng, CR, Nordberg, E, Ogg, M, Patterson, JR, Peterson, D, Riley, D, Soffer, A, Valant-Spaight, B, Ward, C, Athanas, M, Avery, P, Jones, CD, Lohner, M, Prescott, C, Yelton, J, Zheng, J, Brandenburg, G, Briere, RA, Ershov, A, Gao, YS, Kim, DYJ, Wilson, R, Yamamoto, H, Browder, TE, Li, F, Li, Y & Rodriguez, JL 1997, 'First observation of τ → 3πηντ and τ → f1πντ decays', Physical Review Letters, vol. 79, no. 13, pp. 2406-2410.
Bergfeld T, Eisenstein BI, Ernst J, Gladding GE, Gollin GD, Hans RM et al. First observation of τ → 3πηντ and τ → f1πντ decays. Physical Review Letters. 1997;79(13):2406-2410.
Bergfeld, T. ; Eisenstein, B. I. ; Ernst, J. ; Gladding, G. E. ; Gollin, G. D. ; Hans, R. M. ; Johnson, E. ; Karliner, I. ; Marsh, M. A. ; Palmer, M. ; Selen, M. ; Thaler, J. J. ; Edwards, K. W. ; Bellerive, A. ; Janicek, R. ; MacFarlane, D. B. ; Patel, P. M. ; Sadoff, A. J. ; Ammar, R. ; Baringer, P. ; Bean, A. ; Besson, D. ; Coppage, D. ; Darling, C. ; Davis, R. ; Hancock, N. ; Kotov, S. ; Kravchenko, I. ; Kwak, N. ; Anderson, S. ; Kubota, Y. ; Lee, S. J. ; O'Neill, J. J. ; Patton, S. ; Poling, R. ; Riehle, T. ; Savinov, V. ; Smith, A. ; Alam, M. S. ; Athar, S. B. ; Ling, Z. ; Mahmood, A. H. ; Severini, H. ; Timm, S. ; Wappler, F. ; Anastassov, A. ; Blinov, S. ; Duboscq, J. E. ; Fujino, D. ; Gan, K. K. ; Hart, T. ; Honscheid, K. ; Kagan, H. ; Kass, R. ; Lee, J. ; Spencer, M. B. ; Sung, M. ; Undrus, A. ; Wanke, R. ; Wolf, A. ; Zoeller, M. M. ; Nemati, B. ; Richichi, S. J. ; Ross, W. R. ; Skubic, P. ; Bishai, M. ; Fast, J. ; Gerndt, E. ; Hinson, J. W. ; Menon, N. ; Miller, D. H. ; Shibata, E. I. ; Shipsey, I. P J ; Yurko, M. ; Gibbons, L. ; Glenn, S. ; Johnson, S. D. ; Kwon, Y. ; Roberts, S. ; Thorndike, E. H. ; Jessop, C. P. ; Lingel, K. ; Marsiske, H. ; Perl, M. L. ; Ugolini, D. ; Wang, R. ; Zhou, X. ; Coan, T. E. ; Fadeyev, V. ; Korolkov, I. ; Maravin, Y. ; Narsky, I. ; Shelkov, V. ; Staeck, J. ; Stroynowski, R. ; Volobouev, I. ; Ye, J. ; Artuso, M. ; Efimov, A. ; Gao, M. ; Goldberg, M. ; He, D. ; Kopp, S. ; Moneti, G. C. ; Mountain, R. ; Schuh, S. ; Skwarnicki, T. ; Stone, S. ; Viehhauser, G. ; Xing, X. ; Bartelt, J. ; Csorna, S. E. ; Jain, V. ; McLean, K. W. ; Marka, S. ; Godang, R. ; Kinoshita, K. ; Lai, I. C. ; Pomianowski, P. ; Schrenk, S. ; Bonvicini, G. ; Cinabro, D. ; Greene, R. ; Perera, L. P. ; Zhou, G. J. ; Barish, B. ; Chadha, M. ; Chan, S. ; Eigen, G. ; Miller, J. S. ; O'Grady, C. ; Schmidtler, M. ; Urheim, J. ; Weinstein, A. J. ; Würthwein, F. ; Bliss, Daniel ; Masek, G. ; Paar, H. P. ; Prell, S. ; Sharma, V. ; Asner, D. M. ; Gronberg, J. ; Hill, T. S. ; Kutschke, R. ; Lange, D. J. ; Menary, S. ; Morrison, R. J. ; Nelson, H. N. ; Nelson, T. K. ; Qiao, C. ; Richman, J. D. ; Roberts, D. ; Ryd, A. ; Witherell, M. S. ; Balest, R. ; Behrens, B. H. ; Ford, W. T. ; Park, H. ; Roy, J. ; Smith, J. G. ; Alexander, J. P. ; Bebek, C. ; Berger, B. E. ; Berkelman, K. ; Bloom, K. ; Cassel, D. G. ; Cho, H. A. ; Coffman, D. M. ; Crowcroft, D. S. ; Dickson, M. ; Drell, P. S. ; Ecklund, K. M. ; Ehrlich, R. ; Foland, A. D. ; Gaidarev, P. ; Galik, R. S. ; Gittelman, B. ; Gray, S. W. ; Hartill, D. L. ; Heltsley, B. K. ; Hopman, P. I. ; Kandaswamy, J. ; Kim, P. C. ; Kreinick, D. L. ; Lee, T. ; Liu, Y. ; Ludwig, G. S. ; Masui, J. ; Mevissen, J. ; Mistry, N. B. ; Ng, C. R. ; Nordberg, E. ; Ogg, M. ; Patterson, J. R. ; Peterson, D. ; Riley, D. ; Soffer, A. ; Valant-Spaight, B. ; Ward, C. ; Athanas, M. ; Avery, P. ; Jones, C. D. ; Lohner, M. ; Prescott, C. ; Yelton, J. ; Zheng, J. ; Brandenburg, G. ; Briere, R. A. ; Ershov, A. ; Gao, Y. S. ; Kim, D. Y J ; Wilson, R. ; Yamamoto, H. ; Browder, T. E. ; Li, F. ; Li, Y. ; Rodriguez, J. L. / First observation of τ → 3πηντ and τ → f1πντ decays. In: Physical Review Letters. 1997 ; Vol. 79, No. 13. pp. 2406-2410.
@article{bcc84bcde8234caeb6b2bfb780fbae64,
title = "First observation of τ → 3πηντ and τ → f1πντ decays",
abstract = "We have observed new channels for τ decays with an η in the final state. We study 3-prong tau decays, using the η → γγ and η → 3π0 decay modes and 1-prong decays with two π0's using the η → γγ channel. The measured branching fractions are B(τ- → π- π- π+ ηντ) = (3.4-0.5 +0.6 ± 0.6) × 10-4 and B(τ- → π- 2π0ηντ) = (1.4 ± 0.6 ± 0.3) × 10-4. We observe clear evidence for f1 → ηππ substructure and measure B(τ- → f1π- ντ) = (5.8;-1.3 +1.4 ± 1.8) × 10-4. We have also searched for η′(958) production and obtain 90{\%} C.L. upper limits B(τ- → π- η′ ντ) < 7.4 × 10-5 and B(τ- → π- π0 η′ντ < 8.0 × 10-5.",
author = "T. Bergfeld and Eisenstein, {B. I.} and J. Ernst and Gladding, {G. E.} and Gollin, {G. D.} and Hans, {R. M.} and E. Johnson and I. Karliner and Marsh, {M. A.} and M. Palmer and M. Selen and Thaler, {J. J.} and Edwards, {K. W.} and A. Bellerive and R. Janicek and MacFarlane, {D. B.} and Patel, {P. M.} and Sadoff, {A. J.} and R. Ammar and P. Baringer and A. Bean and D. Besson and D. Coppage and C. Darling and R. Davis and N. Hancock and S. Kotov and I. Kravchenko and N. Kwak and S. Anderson and Y. Kubota and Lee, {S. J.} and O'Neill, {J. J.} and S. Patton and R. Poling and T. Riehle and V. Savinov and A. Smith and Alam, {M. S.} and Athar, {S. B.} and Z. Ling and Mahmood, {A. H.} and H. Severini and S. Timm and F. Wappler and A. Anastassov and S. Blinov and Duboscq, {J. E.} and D. Fujino and Gan, {K. K.} and T. Hart and K. Honscheid and H. Kagan and R. Kass and J. Lee and Spencer, {M. B.} and M. Sung and A. Undrus and R. Wanke and A. Wolf and Zoeller, {M. M.} and B. Nemati and Richichi, {S. J.} and Ross, {W. R.} and P. Skubic and M. Bishai and J. Fast and E. Gerndt and Hinson, {J. W.} and N. Menon and Miller, {D. H.} and Shibata, {E. I.} and Shipsey, {I. P J} and M. Yurko and L. Gibbons and S. Glenn and Johnson, {S. D.} and Y. Kwon and S. Roberts and Thorndike, {E. H.} and Jessop, {C. P.} and K. Lingel and H. Marsiske and Perl, {M. L.} and D. Ugolini and R. Wang and X. Zhou and Coan, {T. E.} and V. Fadeyev and I. Korolkov and Y. Maravin and I. Narsky and V. Shelkov and J. Staeck and R. Stroynowski and I. Volobouev and J. Ye and M. Artuso and A. Efimov and M. Gao and M. Goldberg and D. He and S. Kopp and Moneti, {G. C.} and R. Mountain and S. Schuh and T. Skwarnicki and S. Stone and G. Viehhauser and X. Xing and J. Bartelt and Csorna, {S. E.} and V. Jain and McLean, {K. W.} and S. Marka and R. Godang and K. Kinoshita and Lai, {I. C.} and P. Pomianowski and S. Schrenk and G. Bonvicini and D. Cinabro and R. Greene and Perera, {L. P.} and Zhou, {G. J.} and B. Barish and M. Chadha and S. Chan and G. Eigen and Miller, {J. S.} and C. O'Grady and M. Schmidtler and J. Urheim and Weinstein, {A. J.} and F. W{\"u}rthwein and Daniel Bliss and G. Masek and Paar, {H. P.} and S. Prell and V. Sharma and Asner, {D. M.} and J. Gronberg and Hill, {T. S.} and R. Kutschke and Lange, {D. J.} and S. Menary and Morrison, {R. J.} and Nelson, {H. N.} and Nelson, {T. K.} and C. Qiao and Richman, {J. D.} and D. Roberts and A. Ryd and Witherell, {M. S.} and R. Balest and Behrens, {B. H.} and Ford, {W. T.} and H. Park and J. Roy and Smith, {J. G.} and Alexander, {J. P.} and C. Bebek and Berger, {B. E.} and K. Berkelman and K. Bloom and Cassel, {D. G.} and Cho, {H. A.} and Coffman, {D. M.} and Crowcroft, {D. S.} and M. Dickson and Drell, {P. S.} and Ecklund, {K. M.} and R. Ehrlich and Foland, {A. D.} and P. Gaidarev and Galik, {R. S.} and B. Gittelman and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and Hopman, {P. I.} and J. Kandaswamy and Kim, {P. C.} and Kreinick, {D. L.} and T. Lee and Y. Liu and Ludwig, {G. S.} and J. Masui and J. Mevissen and Mistry, {N. B.} and Ng, {C. R.} and E. Nordberg and M. Ogg and Patterson, {J. R.} and D. Peterson and D. Riley and A. Soffer and B. Valant-Spaight and C. Ward and M. Athanas and P. Avery and Jones, {C. D.} and M. Lohner and C. Prescott and J. Yelton and J. Zheng and G. Brandenburg and Briere, {R. A.} and A. Ershov and Gao, {Y. S.} and Kim, {D. Y J} and R. Wilson and H. Yamamoto and Browder, {T. E.} and F. Li and Y. Li and Rodriguez, {J. L.}",
year = "1997",
language = "English (US)",
volume = "79",
pages = "2406--2410",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "13",

}

TY - JOUR

T1 - First observation of τ → 3πηντ and τ → f1πντ decays

AU - Bergfeld, T.

AU - Eisenstein, B. I.

AU - Ernst, J.

AU - Gladding, G. E.

AU - Gollin, G. D.

AU - Hans, R. M.

AU - Johnson, E.

AU - Karliner, I.

AU - Marsh, M. A.

AU - Palmer, M.

AU - Selen, M.

AU - Thaler, J. J.

AU - Edwards, K. W.

AU - Bellerive, A.

AU - Janicek, R.

AU - MacFarlane, D. B.

AU - Patel, P. M.

AU - Sadoff, A. J.

AU - Ammar, R.

AU - Baringer, P.

AU - Bean, A.

AU - Besson, D.

AU - Coppage, D.

AU - Darling, C.

AU - Davis, R.

AU - Hancock, N.

AU - Kotov, S.

AU - Kravchenko, I.

AU - Kwak, N.

AU - Anderson, S.

AU - Kubota, Y.

AU - Lee, S. J.

AU - O'Neill, J. J.

AU - Patton, S.

AU - Poling, R.

AU - Riehle, T.

AU - Savinov, V.

AU - Smith, A.

AU - Alam, M. S.

AU - Athar, S. B.

AU - Ling, Z.

AU - Mahmood, A. H.

AU - Severini, H.

AU - Timm, S.

AU - Wappler, F.

AU - Anastassov, A.

AU - Blinov, S.

AU - Duboscq, J. E.

AU - Fujino, D.

AU - Gan, K. K.

AU - Hart, T.

AU - Honscheid, K.

AU - Kagan, H.

AU - Kass, R.

AU - Lee, J.

AU - Spencer, M. B.

AU - Sung, M.

AU - Undrus, A.

AU - Wanke, R.

AU - Wolf, A.

AU - Zoeller, M. M.

AU - Nemati, B.

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PY - 1997

Y1 - 1997

N2 - We have observed new channels for τ decays with an η in the final state. We study 3-prong tau decays, using the η → γγ and η → 3π0 decay modes and 1-prong decays with two π0's using the η → γγ channel. The measured branching fractions are B(τ- → π- π- π+ ηντ) = (3.4-0.5 +0.6 ± 0.6) × 10-4 and B(τ- → π- 2π0ηντ) = (1.4 ± 0.6 ± 0.3) × 10-4. We observe clear evidence for f1 → ηππ substructure and measure B(τ- → f1π- ντ) = (5.8;-1.3 +1.4 ± 1.8) × 10-4. We have also searched for η′(958) production and obtain 90% C.L. upper limits B(τ- → π- η′ ντ) < 7.4 × 10-5 and B(τ- → π- π0 η′ντ < 8.0 × 10-5.

AB - We have observed new channels for τ decays with an η in the final state. We study 3-prong tau decays, using the η → γγ and η → 3π0 decay modes and 1-prong decays with two π0's using the η → γγ channel. The measured branching fractions are B(τ- → π- π- π+ ηντ) = (3.4-0.5 +0.6 ± 0.6) × 10-4 and B(τ- → π- 2π0ηντ) = (1.4 ± 0.6 ± 0.3) × 10-4. We observe clear evidence for f1 → ηππ substructure and measure B(τ- → f1π- ντ) = (5.8;-1.3 +1.4 ± 1.8) × 10-4. We have also searched for η′(958) production and obtain 90% C.L. upper limits B(τ- → π- η′ ντ) < 7.4 × 10-5 and B(τ- → π- π0 η′ντ < 8.0 × 10-5.

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M3 - Article

AN - SCOPUS:4243818953

VL - 79

SP - 2406

EP - 2410

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 13

ER -