Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−

Physics

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https://doi.org/10.1016/0370-2693(95)00107-V
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Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−. / ALEPH Collaboration.
In: Physics Letters B, Vol. 346, No. 3-4, 1995, p. 379-388.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

ALEPH Collaboration 1995, 'Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−', Physics Letters B, vol. 346, no. 3-4, pp. 379-388. https://doi.org/10.1016/0370-2693(95)00107-V

APA

ALEPH Collaboration (1995). Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−. Physics Letters B, 346(3-4), 379-388. https://doi.org/10.1016/0370-2693(95)00107-V

Vancouver

ALEPH Collaboration. Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−. Physics Letters B. 1995;346(3-4):379-388. doi: 10.1016/0370-2693(95)00107-V

Author

ALEPH Collaboration. / Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−. In: Physics Letters B. 1995 ; Vol. 346, No. 3-4. pp. 379-388.

Bibtex

@article{31e8e774334640b99cb503f8044c3e54,

title = "Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−",

abstract = "The Michel parameters and the average τ-neutrino helicity are measured using correlations between the decays of the τ+ and τ− produced on the Z resonance and observed in the ALEPH detector at LEP. The Michel parameters, ϱl, ηl, ξl, (δξ)l, are determined from with l = (e, μ), and the average τ neutrino helicity, 〈h(ντ)〉, from τ → hν with h = (π, ϱ, a1). The results obtained with e−μ universality are: ϱl = 0.751±0.039±0.022, ηl = −0.04±0.15±0.11, ξl = 1.18±0.15±0.06, (δξ)l = 0.88±0.11±0.07, and the average τ neutrino helicity 〈h(ντ)〉 = −1.006±0.032±0.019. No significant deviation from the Standard Model V-A prediction is observed.",

author = "D. Buskulic and Alexander Finch and {ALEPH Collaboration}",

year = "1995",

doi = "10.1016/0370-2693(95)00107-V",

language = "English",

volume = "346",

pages = "379--388",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "3-4",

}

RIS

TY - JOUR

T1 - Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ−

AU - Buskulic, D.

AU - Finch, Alexander

AU - ALEPH Collaboration

PY - 1995

Y1 - 1995

N2 - The Michel parameters and the average τ-neutrino helicity are measured using correlations between the decays of the τ+ and τ− produced on the Z resonance and observed in the ALEPH detector at LEP. The Michel parameters, ϱl, ηl, ξl, (δξ)l, are determined from with l = (e, μ), and the average τ neutrino helicity, 〈h(ντ)〉, from τ → hν with h = (π, ϱ, a1). The results obtained with e−μ universality are: ϱl = 0.751±0.039±0.022, ηl = −0.04±0.15±0.11, ξl = 1.18±0.15±0.06, (δξ)l = 0.88±0.11±0.07, and the average τ neutrino helicity 〈h(ντ)〉 = −1.006±0.032±0.019. No significant deviation from the Standard Model V-A prediction is observed.

AB - The Michel parameters and the average τ-neutrino helicity are measured using correlations between the decays of the τ+ and τ− produced on the Z resonance and observed in the ALEPH detector at LEP. The Michel parameters, ϱl, ηl, ξl, (δξ)l, are determined from with l = (e, μ), and the average τ neutrino helicity, 〈h(ντ)〉, from τ → hν with h = (π, ϱ, a1). The results obtained with e−μ universality are: ϱl = 0.751±0.039±0.022, ηl = −0.04±0.15±0.11, ξl = 1.18±0.15±0.06, (δξ)l = 0.88±0.11±0.07, and the average τ neutrino helicity 〈h(ντ)〉 = −1.006±0.032±0.019. No significant deviation from the Standard Model V-A prediction is observed.

U2 - 10.1016/0370-2693(95)00107-V

DO - 10.1016/0370-2693(95)00107-V

M3 - Journal article

VL - 346

SP - 379

EP - 388

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 3-4

ER -

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