Measurement of the decay τ- →ρ-ντ

H. Albrecht; H. Ehrlichmann; T. Hamacher; R. P. Hofmann; T. Kirchhoff; A. Nau; S. Nowak; H. Schröder; H. D. Schulz; M. Walter; R. Wurth; R. D. Appuhn; C. Hast; H. Kolanoski; A. Lange; A. Lindner; R. Mankel; M. Schieber; T. Siegmund; B. Spaan; H. Thurn; D. Topfer; A. Walther; D. Wegener; M. Paulini; K. Reim; H. Wegener; R. Mundt; T. Oest; R. Reiner; W. Schmidt-Parzefall; W. Funk; J. Stiewe; S. Werner; K. Ehret; W. Hofmann; A. Hüpper; S. Khan; K. T. Knöpfle; J. Spengler; D. I. Britton; C. E.K. Charlesworth; K. W. Edwards; E. R.F. Hyatt; H. Kapitza; P. Krieger; D. B. McFarlane; P. M. Patel; J. D. Prentice; P. R.B. Saull; K. Tzamariudaki; R. G. Van de Water; T. S. Yoon; D. Reßing; M. Schmidtler; M. Schneider; K. R. Schubert; K. Strahl; R. Waldi; S. Weseler; G. Kernel; P. Križan; E. Križnič; T. Podobnik; T. Živko; H. I. Cronström; L. Jönsson; V. Balagura; I. Belyaev; M. Danilov; A. Droutskoy; A. Golutvin; I. Gorelov; G. Kostina; V. Lubimov; P. Murat; P. Pakhlov; F. Ratnikov; S. Semenov; V. Shibaev; V. Soloshenko; I. Tichomirov; Yu Zaitsev

doi:10.1007/BF01565941

Measurement of the decay τ^- →ρ^-ν_τ

H. Albrecht, H. Ehrlichmann, T. Hamacher, R. P. Hofmann, T. Kirchhoff, A. Nau, S. Nowak, H. Schröder, H. D. Schulz, M. Walter, R. Wurth, R. D. Appuhn, C. Hast, H. Kolanoski, A. Lange, A. Lindner, R. Mankel, M. Schieber, T. Siegmund, B. SpaanH. Thurn, D. Topfer, A. Walther, D. Wegener, M. Paulini, K. Reim, H. Wegener, R. Mundt, T. Oest, R. Reiner, W. Schmidt-Parzefall, W. Funk, J. Stiewe, S. Werner, K. Ehret, W. Hofmann, A. Hüpper, S. Khan, K. T. Knöpfle, J. Spengler, D. I. Britton, C. E.K. Charlesworth, K. W. Edwards, E. R.F. Hyatt, H. Kapitza, P. Krieger, D. B. McFarlane, P. M. Patel, J. D. Prentice, P. R.B. Saull, K. Tzamariudaki, R. G. Van de Water, T. S. Yoon, D. Reßing, M. Schmidtler, M. Schneider, K. R. Schubert, K. Strahl, R. Waldi, S. Weseler, G. Kernel, P. Križan, E. Križnič, T. Podobnik, T. Živko, H. I. Cronström, L. Jönsson, V. Balagura, I. Belyaev, M. Danilov, A. Droutskoy, A. Golutvin, I. Gorelov, G. Kostina, V. Lubimov, P. Murat, P. Pakhlov, F. Ratnikov, S. Semenov, V. Shibaev, V. Soloshenko, I. Tichomirov, Yu Zaitsev

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Abstract

An analysis of the decay τ^-→π^-π⁰v_τ has been performed using the ARGUS detector at the DORIS II storage ring. The branching ratio has been determined to be Br(τ^-→π^-π⁰v_τ=(22.6±0.4±0.9)%. The shape of the π^-π⁰ invariant mass spectrum is found to be in good agreement with the predictions obtained using the conserved vector current (CVC) hypothesis, suggesting that the π^-π⁰ system is produced in a J^P=1^- state. An analysis of the measured decay angular distribution of the pions with respect to the flight direction of the π^-π⁰ system demonstrates the vector nature of the coupling at the τv_τ vertex. With the assumption of zero v_τ mass the v_τ spin has been shown to be {Mathematical expression}.

Original language	English
Pages (from-to)	339-345
Number of pages	7
Journal	Zeitschrift für Physik C Particles and Fields
Volume	56
Issue number	3
DOIs	https://doi.org/10.1007/BF01565941
State	Published - Sep 1992
Externally published	Yes

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Albrecht, H., Ehrlichmann, H., Hamacher, T., Hofmann, R. P., Kirchhoff, T., Nau, A., Nowak, S., Schröder, H., Schulz, H. D., Walter, M., Wurth, R., Appuhn, R. D., Hast, C., Kolanoski, H., Lange, A., Lindner, A., Mankel, R., Schieber, M., Siegmund, T., ... Zaitsev, Y. (1992). Measurement of the decay τ^- →ρ^-ν_τ. Zeitschrift für Physik C Particles and Fields, 56(3), 339-345. https://doi.org/10.1007/BF01565941

@article{37565934a2fb47e98ffeb04464b86d43,

title = "Measurement of the decay τ- →ρ-ντ",

abstract = "An analysis of the decay τ-→π-π0vτ has been performed using the ARGUS detector at the DORIS II storage ring. The branching ratio has been determined to be Br(τ-→π-π0vτ=(22.6±0.4±0.9)%. The shape of the π-π0 invariant mass spectrum is found to be in good agreement with the predictions obtained using the conserved vector current (CVC) hypothesis, suggesting that the π-π0 system is produced in a JP=1- state. An analysis of the measured decay angular distribution of the pions with respect to the flight direction of the π-π0 system demonstrates the vector nature of the coupling at the τvτ vertex. With the assumption of zero vτ mass the vτ spin has been shown to be {Mathematical expression}.",

author = "H. Albrecht and H. Ehrlichmann and T. Hamacher and Hofmann, {R. P.} and T. Kirchhoff and A. Nau and S. Nowak and H. Schr{\"o}der and Schulz, {H. D.} and M. Walter and R. Wurth and Appuhn, {R. D.} and C. Hast and H. Kolanoski and A. Lange and A. Lindner and R. Mankel and M. Schieber and T. Siegmund and B. Spaan and H. Thurn and D. Topfer and A. Walther and D. Wegener and M. Paulini and K. Reim and H. Wegener and R. Mundt and T. Oest and R. Reiner and W. Schmidt-Parzefall and W. Funk and J. Stiewe and S. Werner and K. Ehret and W. Hofmann and A. H{\"u}pper and S. Khan and Kn{\"o}pfle, {K. T.} and J. Spengler and Britton, {D. I.} and Charlesworth, {C. E.K.} and Edwards, {K. W.} and Hyatt, {E. R.F.} and H. Kapitza and P. Krieger and McFarlane, {D. B.} and Patel, {P. M.} and Prentice, {J. D.} and Saull, {P. R.B.} and K. Tzamariudaki and {Van de Water}, {R. G.} and Yoon, {T. S.} and D. Re{\ss}ing and M. Schmidtler and M. Schneider and Schubert, {K. R.} and K. Strahl and R. Waldi and S. Weseler and G. Kernel and P. Kri{\v z}an and E. Kri{\v z}ni{\v c} and T. Podobnik and T. {\v Z}ivko and Cronstr{\"o}m, {H. I.} and L. J{\"o}nsson and V. Balagura and I. Belyaev and M. Danilov and A. Droutskoy and A. Golutvin and I. Gorelov and G. Kostina and V. Lubimov and P. Murat and P. Pakhlov and F. Ratnikov and S. Semenov and V. Shibaev and V. Soloshenko and I. Tichomirov and Yu Zaitsev",

year = "1992",

month = sep,

doi = "10.1007/BF01565941",

language = "English",

volume = "56",

pages = "339--345",

journal = "Zeitschrift f{\"u}r Physik C Particles and Fields",

issn = "0170-9739",

publisher = "Springer Verlag",

number = "3",

}

Albrecht, H, Ehrlichmann, H, Hamacher, T, Hofmann, RP, Kirchhoff, T, Nau, A, Nowak, S, Schröder, H, Schulz, HD, Walter, M, Wurth, R, Appuhn, RD, Hast, C, Kolanoski, H, Lange, A, Lindner, A, Mankel, R, Schieber, M, Siegmund, T, Spaan, B, Thurn, H, Topfer, D, Walther, A, Wegener, D, Paulini, M, Reim, K, Wegener, H, Mundt, R, Oest, T, Reiner, R, Schmidt-Parzefall, W, Funk, W, Stiewe, J, Werner, S, Ehret, K, Hofmann, W, Hüpper, A, Khan, S, Knöpfle, KT, Spengler, J, Britton, DI, Charlesworth, CEK, Edwards, KW, Hyatt, ERF, Kapitza, H, Krieger, P, McFarlane, DB, Patel, PM, Prentice, JD, Saull, PRB, Tzamariudaki, K, Van de Water, RG, Yoon, TS, Reßing, D, Schmidtler, M, Schneider, M, Schubert, KR, Strahl, K, Waldi, R, Weseler, S, Kernel, G, Križan, P, Križnič, E, Podobnik, T, Živko, T, Cronström, HI, Jönsson, L, Balagura, V, Belyaev, I, Danilov, M, Droutskoy, A, Golutvin, A, Gorelov, I, Kostina, G, Lubimov, V, Murat, P, Pakhlov, P, Ratnikov, F, Semenov, S, Shibaev, V, Soloshenko, V, Tichomirov, I & Zaitsev, Y 1992, 'Measurement of the decay τ^- →ρ^-ν_τ', Zeitschrift für Physik C Particles and Fields, vol. 56, no. 3, pp. 339-345. https://doi.org/10.1007/BF01565941

TY - JOUR

T1 - Measurement of the decay τ- →ρ-ντ

AU - Albrecht, H.

AU - Ehrlichmann, H.

AU - Hamacher, T.

AU - Hofmann, R. P.

AU - Kirchhoff, T.

AU - Nau, A.

AU - Nowak, S.

AU - Schröder, H.

AU - Schulz, H. D.

AU - Walter, M.

AU - Wurth, R.

AU - Appuhn, R. D.

AU - Hast, C.

AU - Kolanoski, H.

AU - Lange, A.

AU - Lindner, A.

AU - Mankel, R.

AU - Schieber, M.

AU - Siegmund, T.

AU - Spaan, B.

AU - Thurn, H.

AU - Topfer, D.

AU - Walther, A.

AU - Wegener, D.

AU - Paulini, M.

AU - Reim, K.

AU - Wegener, H.

AU - Mundt, R.

AU - Oest, T.

AU - Reiner, R.

AU - Schmidt-Parzefall, W.

AU - Funk, W.

AU - Stiewe, J.

AU - Werner, S.

AU - Ehret, K.

AU - Hofmann, W.

AU - Hüpper, A.

AU - Khan, S.

AU - Knöpfle, K. T.

AU - Spengler, J.

AU - Britton, D. I.

AU - Charlesworth, C. E.K.

AU - Edwards, K. W.

AU - Hyatt, E. R.F.

AU - Kapitza, H.

AU - Krieger, P.

AU - McFarlane, D. B.

AU - Patel, P. M.

AU - Prentice, J. D.

AU - Saull, P. R.B.

AU - Tzamariudaki, K.

AU - Van de Water, R. G.

AU - Yoon, T. S.

AU - Reßing, D.

AU - Schmidtler, M.

AU - Schneider, M.

AU - Schubert, K. R.

AU - Strahl, K.

AU - Waldi, R.

AU - Weseler, S.

AU - Kernel, G.

AU - Križan, P.

AU - Križnič, E.

AU - Podobnik, T.

AU - Živko, T.

AU - Cronström, H. I.

AU - Jönsson, L.

AU - Balagura, V.

AU - Belyaev, I.

AU - Danilov, M.

AU - Droutskoy, A.

AU - Golutvin, A.

AU - Gorelov, I.

AU - Kostina, G.

AU - Lubimov, V.

AU - Murat, P.

AU - Pakhlov, P.

AU - Ratnikov, F.

AU - Semenov, S.

AU - Shibaev, V.

AU - Soloshenko, V.

AU - Tichomirov, I.

AU - Zaitsev, Yu

PY - 1992/9

Y1 - 1992/9

N2 - An analysis of the decay τ-→π-π0vτ has been performed using the ARGUS detector at the DORIS II storage ring. The branching ratio has been determined to be Br(τ-→π-π0vτ=(22.6±0.4±0.9)%. The shape of the π-π0 invariant mass spectrum is found to be in good agreement with the predictions obtained using the conserved vector current (CVC) hypothesis, suggesting that the π-π0 system is produced in a JP=1- state. An analysis of the measured decay angular distribution of the pions with respect to the flight direction of the π-π0 system demonstrates the vector nature of the coupling at the τvτ vertex. With the assumption of zero vτ mass the vτ spin has been shown to be {Mathematical expression}.

AB - An analysis of the decay τ-→π-π0vτ has been performed using the ARGUS detector at the DORIS II storage ring. The branching ratio has been determined to be Br(τ-→π-π0vτ=(22.6±0.4±0.9)%. The shape of the π-π0 invariant mass spectrum is found to be in good agreement with the predictions obtained using the conserved vector current (CVC) hypothesis, suggesting that the π-π0 system is produced in a JP=1- state. An analysis of the measured decay angular distribution of the pions with respect to the flight direction of the π-π0 system demonstrates the vector nature of the coupling at the τvτ vertex. With the assumption of zero vτ mass the vτ spin has been shown to be {Mathematical expression}.

UR - http://www.scopus.com/inward/record.url?scp=0002536051&partnerID=8YFLogxK

U2 - 10.1007/BF01565941

DO - 10.1007/BF01565941

M3 - Article

AN - SCOPUS:0002536051

SN - 0170-9739

VL - 56

SP - 339

EP - 345

JO - Zeitschrift für Physik C Particles and Fields

JF - Zeitschrift für Physik C Particles and Fields

IS - 3

ER -

Measurement of the decay τ^- →ρ^-ν_τ

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