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Study of tau decays involving kaons, spectral functions and determination of the strange quark mass

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Study of tau decays involving kaons, spectral functions and determination of the strange quark mass. / ALEPH Collaboration, The; Barate, R.; Betteridge, Andrew; Bowdery, Christopher; Colrain, Paul; Finch, Alexander; Foster, Frank; Hughes, Gareth; Jones, Roger; Williams, Mark.

In: The European Physical Journal C (EPJ C) - Particles and Fields, Vol. 11, No. 4, 12.1999, p. 599-618.

Research output: Contribution to journalJournal articlepeer-review

Harvard

ALEPH Collaboration, T, Barate, R, Betteridge, A, Bowdery, C, Colrain, P, Finch, A, Foster, F, Hughes, G, Jones, R & Williams, M 1999, 'Study of tau decays involving kaons, spectral functions and determination of the strange quark mass', The European Physical Journal C (EPJ C) - Particles and Fields, vol. 11, no. 4, pp. 599-618. https://doi.org/10.1007/s100520050659

APA

ALEPH Collaboration, T., Barate, R., Betteridge, A., Bowdery, C., Colrain, P., Finch, A., Foster, F., Hughes, G., Jones, R., & Williams, M. (1999). Study of tau decays involving kaons, spectral functions and determination of the strange quark mass. The European Physical Journal C (EPJ C) - Particles and Fields, 11(4), 599-618. https://doi.org/10.1007/s100520050659

Vancouver

ALEPH Collaboration T, Barate R, Betteridge A, Bowdery C, Colrain P, Finch A et al. Study of tau decays involving kaons, spectral functions and determination of the strange quark mass. The European Physical Journal C (EPJ C) - Particles and Fields. 1999 Dec;11(4):599-618. https://doi.org/10.1007/s100520050659

Author

ALEPH Collaboration, The ; Barate, R. ; Betteridge, Andrew ; Bowdery, Christopher ; Colrain, Paul ; Finch, Alexander ; Foster, Frank ; Hughes, Gareth ; Jones, Roger ; Williams, Mark. / Study of tau decays involving kaons, spectral functions and determination of the strange quark mass. In: The European Physical Journal C (EPJ C) - Particles and Fields. 1999 ; Vol. 11, No. 4. pp. 599-618.

Bibtex

@article{86c18cb182f74cb3a324a196fd8163e7,
title = "Study of tau decays involving kaons, spectral functions and determination of the strange quark mass",
abstract = "All ALEPH measurements of branching ratios of τ decays involving kaons are summarized including a combination of results obtained with K0S and K0L detection. The decay dynamics are studied, leading to the determination of contributions from vector K∗(892) and K∗(1410) , and axial-vector K1(1270) and K1(1400) resonances. Agreement with isospin symmetry is observed among the different final states. Under the hypothesis of the conserved vector current, the spectral function for the KK¯¯¯π mode is compared with the corresponding cross section for low energy e+e− annihilation, yielding an axial-vector fraction of (94+6−8)% for this mode. The branching ratio for τ decay into all strange final states is determined to be B(τ−→X−(S=−1)ντ)=(28.7±1.2)×10−3 . The measured mass spectra of the strange τ decay modes are exploited to derive the S=−1 spectral function. A combination of strange and nonstrange spectral functions is used to determine the strange quark mass and nonperturbative contributions to the strange hadronic width. A method is developed to avoid the bad convergence of the spin zero hadronic component, with the result ms(M2τ)=(176+46−57) MeV/ c2 . The evolution down to 1 GeV gives ms(1GeV2)=(234+61−76)MeV/c2 .",
author = "{ALEPH Collaboration}, The and R. Barate and Andrew Betteridge and Christopher Bowdery and Paul Colrain and Alexander Finch and Frank Foster and Gareth Hughes and Roger Jones and Mark Williams",
year = "1999",
month = dec,
doi = "10.1007/s100520050659",
language = "English",
volume = "11",
pages = "599--618",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "4",

}

RIS

TY - JOUR

T1 - Study of tau decays involving kaons, spectral functions and determination of the strange quark mass

AU - ALEPH Collaboration, The

AU - Barate, R.

AU - Betteridge, Andrew

AU - Bowdery, Christopher

AU - Colrain, Paul

AU - Finch, Alexander

AU - Foster, Frank

AU - Hughes, Gareth

AU - Jones, Roger

AU - Williams, Mark

PY - 1999/12

Y1 - 1999/12

N2 - All ALEPH measurements of branching ratios of τ decays involving kaons are summarized including a combination of results obtained with K0S and K0L detection. The decay dynamics are studied, leading to the determination of contributions from vector K∗(892) and K∗(1410) , and axial-vector K1(1270) and K1(1400) resonances. Agreement with isospin symmetry is observed among the different final states. Under the hypothesis of the conserved vector current, the spectral function for the KK¯¯¯π mode is compared with the corresponding cross section for low energy e+e− annihilation, yielding an axial-vector fraction of (94+6−8)% for this mode. The branching ratio for τ decay into all strange final states is determined to be B(τ−→X−(S=−1)ντ)=(28.7±1.2)×10−3 . The measured mass spectra of the strange τ decay modes are exploited to derive the S=−1 spectral function. A combination of strange and nonstrange spectral functions is used to determine the strange quark mass and nonperturbative contributions to the strange hadronic width. A method is developed to avoid the bad convergence of the spin zero hadronic component, with the result ms(M2τ)=(176+46−57) MeV/ c2 . The evolution down to 1 GeV gives ms(1GeV2)=(234+61−76)MeV/c2 .

AB - All ALEPH measurements of branching ratios of τ decays involving kaons are summarized including a combination of results obtained with K0S and K0L detection. The decay dynamics are studied, leading to the determination of contributions from vector K∗(892) and K∗(1410) , and axial-vector K1(1270) and K1(1400) resonances. Agreement with isospin symmetry is observed among the different final states. Under the hypothesis of the conserved vector current, the spectral function for the KK¯¯¯π mode is compared with the corresponding cross section for low energy e+e− annihilation, yielding an axial-vector fraction of (94+6−8)% for this mode. The branching ratio for τ decay into all strange final states is determined to be B(τ−→X−(S=−1)ντ)=(28.7±1.2)×10−3 . The measured mass spectra of the strange τ decay modes are exploited to derive the S=−1 spectral function. A combination of strange and nonstrange spectral functions is used to determine the strange quark mass and nonperturbative contributions to the strange hadronic width. A method is developed to avoid the bad convergence of the spin zero hadronic component, with the result ms(M2τ)=(176+46−57) MeV/ c2 . The evolution down to 1 GeV gives ms(1GeV2)=(234+61−76)MeV/c2 .

U2 - 10.1007/s100520050659

DO - 10.1007/s100520050659

M3 - Journal article

VL - 11

SP - 599

EP - 618

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 4

ER -