Measurement of the tau branching fractions into leptons

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, A. Bajo, L. Baksay & 79 others A. Balandras, S. V. Baldew, S. Banerjee, Sw Banerjee, A. Barczyk, R. Barillère, P. Bartalini, M. Basile, N. Batalova, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, R. Berbeco, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, S. Bhattacharya, M. Biasini, A. Biland, J. J. Blaising, S. C. Blyth, G. J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J. G. Branson, F. Brochu, A. Buffini, A. Buijs, J. D. Burger, W. J. Burger, X. D. Cai, M. Capell, G. Cara Romeo, G. Carlino, A. M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y. H. Chang, U. K. Chaturvedi, A. Chemarin, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, A. P. Colijn, N. Colino, S. Costantini, F. Cotorobai, B. De la Cruz, A. Csilling, S. Cucciarelli, T. S. Dai, J. A. Van Dalen, R. D'Alessandro, R. De Asmundis, P. Déglon, A. Csilling

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Using data collected with the L3 detector near the Z resonance, corresponding to an integrated luminosity of 150 pb-1, the branching fractions of the tau lepton into electron and muon are measured to be B(τ → eν̄eντ) = (17.806 ± 0.104 (stat.) ± 0.076 (syst.))%, B(τ → μ ν̄μντ) = (17.342 ± 0.110 (stat.) ± 0.667 (syst.))%. From these results the ratio of the charged current coupling constants of the muon and the electron is determined to be gμ/ge = 1.0007 ± 0.0051. Assuming electron-muon universality, the Fermi constant is measured in tau lepton decays as G F = (1.1616 ± 0.0058) × 10-5 GeV-2. Furthermore, the coupling constant of the strong interaction at the tau mass scale is obtained as αs(m2 τ) = 0.322 ± 0.009 (exp.) ± 0.015 (theory).

Original languageEnglish
Pages (from-to)47-60
Number of pages14
JournalPhysics Letters B
Volume507
Issue number1-4
DOIs
Publication statusPublished - May 17 2001

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leptons
muons
electrons
luminosity
detectors
decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Acciarri, M., Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., ... Csilling, A. (2001). Measurement of the tau branching fractions into leptons. Physics Letters B, 507(1-4), 47-60. https://doi.org/10.1016/S0370-2693(01)00294-5

Measurement of the tau branching fractions into leptons. / Acciarri, M.; Achard, P.; Adriani, O.; Aguilar-Benitez, M.; Alcaraz, J.; Alemanni, G.; Allaby, J.; Aloisio, A.; Alviggi, M. G.; Ambrosi, G.; Anderhub, H.; Andreev, V. P.; Angelescu, T.; Anselmo, F.; Arefiev, A.; Azemoon, T.; Aziz, T.; Bagnaia, P.; Bajo, A.; Baksay, L.; Balandras, A.; Baldew, S. V.; Banerjee, S.; Banerjee, Sw; Barczyk, A.; Barillère, R.; Bartalini, P.; Basile, M.; Batalova, N.; Battiston, R.; Bay, A.; Becattini, F.; Becker, U.; Behner, F.; Bellucci, L.; Berbeco, R.; Berdugo, J.; Berges, P.; Bertucci, B.; Betev, B. L.; Bhattacharya, S.; Biasini, M.; Biland, A.; Blaising, J. J.; Blyth, S. C.; Bobbink, G. J.; Böhm, A.; Boldizsar, L.; Borgia, B.; Bourilkov, D.; Bourquin, M.; Braccini, S.; Branson, J. G.; Brochu, F.; Buffini, A.; Buijs, A.; Burger, J. D.; Burger, W. J.; Cai, X. D.; Capell, M.; Cara Romeo, G.; Carlino, G.; Cartacci, A. M.; Casaus, J.; Castellini, G.; Cavallari, F.; Cavallo, N.; Cecchi, C.; Cerrada, M.; Cesaroni, F.; Chamizo, M.; Chang, Y. H.; Chaturvedi, U. K.; Chemarin, A.; Chen, A.; Chen, G.; Chen, G. M.; Chen, H. F.; Chen, H. S.; Chiefari, G.; Cifarelli, L.; Cindolo, F.; Civinini, C.; Clare, I.; Clare, R.; Coignet, G.; Colijn, A. P.; Colino, N.; Costantini, S.; Cotorobai, F.; De la Cruz, B.; Csilling, A.; Cucciarelli, S.; Dai, T. S.; Van Dalen, J. A.; D'Alessandro, R.; De Asmundis, R.; Déglon, P.; Csilling, A.

In: Physics Letters B, Vol. 507, No. 1-4, 17.05.2001, p. 47-60.

Research output: Contribution to journalArticle

Acciarri, M, Achard, P, Adriani, O, Aguilar-Benitez, M, Alcaraz, J, Alemanni, G, Allaby, J, Aloisio, A, Alviggi, MG, Ambrosi, G, Anderhub, H, Andreev, VP, Angelescu, T, Anselmo, F, Arefiev, A, Azemoon, T, Aziz, T, Bagnaia, P, Bajo, A, Baksay, L, Balandras, A, Baldew, SV, Banerjee, S, Banerjee, S, Barczyk, A, Barillère, R, Bartalini, P, Basile, M, Batalova, N, Battiston, R, Bay, A, Becattini, F, Becker, U, Behner, F, Bellucci, L, Berbeco, R, Berdugo, J, Berges, P, Bertucci, B, Betev, BL, Bhattacharya, S, Biasini, M, Biland, A, Blaising, JJ, Blyth, SC, Bobbink, GJ, Böhm, A, Boldizsar, L, Borgia, B, Bourilkov, D, Bourquin, M, Braccini, S, Branson, JG, Brochu, F, Buffini, A, Buijs, A, Burger, JD, Burger, WJ, Cai, XD, Capell, M, Cara Romeo, G, Carlino, G, Cartacci, AM, Casaus, J, Castellini, G, Cavallari, F, Cavallo, N, Cecchi, C, Cerrada, M, Cesaroni, F, Chamizo, M, Chang, YH, Chaturvedi, UK, Chemarin, A, Chen, A, Chen, G, Chen, GM, Chen, HF, Chen, HS, Chiefari, G, Cifarelli, L, Cindolo, F, Civinini, C, Clare, I, Clare, R, Coignet, G, Colijn, AP, Colino, N, Costantini, S, Cotorobai, F, De la Cruz, B, Csilling, A, Cucciarelli, S, Dai, TS, Van Dalen, JA, D'Alessandro, R, De Asmundis, R, Déglon, P & Csilling, A 2001, 'Measurement of the tau branching fractions into leptons', Physics Letters B, vol. 507, no. 1-4, pp. 47-60. https://doi.org/10.1016/S0370-2693(01)00294-5
Acciarri M, Achard P, Adriani O, Aguilar-Benitez M, Alcaraz J, Alemanni G et al. Measurement of the tau branching fractions into leptons. Physics Letters B. 2001 May 17;507(1-4):47-60. https://doi.org/10.1016/S0370-2693(01)00294-5
Acciarri, M. ; Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; Alcaraz, J. ; Alemanni, G. ; Allaby, J. ; Aloisio, A. ; Alviggi, M. G. ; Ambrosi, G. ; Anderhub, H. ; Andreev, V. P. ; Angelescu, T. ; Anselmo, F. ; Arefiev, A. ; Azemoon, T. ; Aziz, T. ; Bagnaia, P. ; Bajo, A. ; Baksay, L. ; Balandras, A. ; Baldew, S. V. ; Banerjee, S. ; Banerjee, Sw ; Barczyk, A. ; Barillère, R. ; Bartalini, P. ; Basile, M. ; Batalova, N. ; Battiston, R. ; Bay, A. ; Becattini, F. ; Becker, U. ; Behner, F. ; Bellucci, L. ; Berbeco, R. ; Berdugo, J. ; Berges, P. ; Bertucci, B. ; Betev, B. L. ; Bhattacharya, S. ; Biasini, M. ; Biland, A. ; Blaising, J. J. ; Blyth, S. C. ; Bobbink, G. J. ; Böhm, A. ; Boldizsar, L. ; Borgia, B. ; Bourilkov, D. ; Bourquin, M. ; Braccini, S. ; Branson, J. G. ; Brochu, F. ; Buffini, A. ; Buijs, A. ; Burger, J. D. ; Burger, W. J. ; Cai, X. D. ; Capell, M. ; Cara Romeo, G. ; Carlino, G. ; Cartacci, A. M. ; Casaus, J. ; Castellini, G. ; Cavallari, F. ; Cavallo, N. ; Cecchi, C. ; Cerrada, M. ; Cesaroni, F. ; Chamizo, M. ; Chang, Y. H. ; Chaturvedi, U. K. ; Chemarin, A. ; Chen, A. ; Chen, G. ; Chen, G. M. ; Chen, H. F. ; Chen, H. S. ; Chiefari, G. ; Cifarelli, L. ; Cindolo, F. ; Civinini, C. ; Clare, I. ; Clare, R. ; Coignet, G. ; Colijn, A. P. ; Colino, N. ; Costantini, S. ; Cotorobai, F. ; De la Cruz, B. ; Csilling, A. ; Cucciarelli, S. ; Dai, T. S. ; Van Dalen, J. A. ; D'Alessandro, R. ; De Asmundis, R. ; Déglon, P. ; Csilling, A. / Measurement of the tau branching fractions into leptons. In: Physics Letters B. 2001 ; Vol. 507, No. 1-4. pp. 47-60.
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abstract = "Using data collected with the L3 detector near the Z resonance, corresponding to an integrated luminosity of 150 pb-1, the branching fractions of the tau lepton into electron and muon are measured to be B(τ → eν̄eντ) = (17.806 ± 0.104 (stat.) ± 0.076 (syst.)){\%}, B(τ → μ ν̄μντ) = (17.342 ± 0.110 (stat.) ± 0.667 (syst.)){\%}. From these results the ratio of the charged current coupling constants of the muon and the electron is determined to be gμ/ge = 1.0007 ± 0.0051. Assuming electron-muon universality, the Fermi constant is measured in tau lepton decays as G F = (1.1616 ± 0.0058) × 10-5 GeV-2. Furthermore, the coupling constant of the strong interaction at the tau mass scale is obtained as αs(m2 τ) = 0.322 ± 0.009 (exp.) ± 0.015 (theory).",
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T1 - Measurement of the tau branching fractions into leptons

AU - Acciarri, M.

AU - Achard, P.

AU - Adriani, O.

AU - Aguilar-Benitez, M.

AU - Alcaraz, J.

AU - Alemanni, G.

AU - Allaby, J.

AU - Aloisio, A.

AU - Alviggi, M. G.

AU - Ambrosi, G.

AU - Anderhub, H.

AU - Andreev, V. P.

AU - Angelescu, T.

AU - Anselmo, F.

AU - Arefiev, A.

AU - Azemoon, T.

AU - Aziz, T.

AU - Bagnaia, P.

AU - Bajo, A.

AU - Baksay, L.

AU - Balandras, A.

AU - Baldew, S. V.

AU - Banerjee, S.

AU - Banerjee, Sw

AU - Barczyk, A.

AU - Barillère, R.

AU - Bartalini, P.

AU - Basile, M.

AU - Batalova, N.

AU - Battiston, R.

AU - Bay, A.

AU - Becattini, F.

AU - Becker, U.

AU - Behner, F.

AU - Bellucci, L.

AU - Berbeco, R.

AU - Berdugo, J.

AU - Berges, P.

AU - Bertucci, B.

AU - Betev, B. L.

AU - Bhattacharya, S.

AU - Biasini, M.

AU - Biland, A.

AU - Blaising, J. J.

AU - Blyth, S. C.

AU - Bobbink, G. J.

AU - Böhm, A.

AU - Boldizsar, L.

AU - Borgia, B.

AU - Bourilkov, D.

AU - Bourquin, M.

AU - Braccini, S.

AU - Branson, J. G.

AU - Brochu, F.

AU - Buffini, A.

AU - Buijs, A.

AU - Burger, J. D.

AU - Burger, W. J.

AU - Cai, X. D.

AU - Capell, M.

AU - Cara Romeo, G.

AU - Carlino, G.

AU - Cartacci, A. M.

AU - Casaus, J.

AU - Castellini, G.

AU - Cavallari, F.

AU - Cavallo, N.

AU - Cecchi, C.

AU - Cerrada, M.

AU - Cesaroni, F.

AU - Chamizo, M.

AU - Chang, Y. H.

AU - Chaturvedi, U. K.

AU - Chemarin, A.

AU - Chen, A.

AU - Chen, G.

AU - Chen, G. M.

AU - Chen, H. F.

AU - Chen, H. S.

AU - Chiefari, G.

AU - Cifarelli, L.

AU - Cindolo, F.

AU - Civinini, C.

AU - Clare, I.

AU - Clare, R.

AU - Coignet, G.

AU - Colijn, A. P.

AU - Colino, N.

AU - Costantini, S.

AU - Cotorobai, F.

AU - De la Cruz, B.

AU - Csilling, A.

AU - Cucciarelli, S.

AU - Dai, T. S.

AU - Van Dalen, J. A.

AU - D'Alessandro, R.

AU - De Asmundis, R.

AU - Déglon, P.

AU - Csilling, A.

PY - 2001/5/17

Y1 - 2001/5/17

N2 - Using data collected with the L3 detector near the Z resonance, corresponding to an integrated luminosity of 150 pb-1, the branching fractions of the tau lepton into electron and muon are measured to be B(τ → eν̄eντ) = (17.806 ± 0.104 (stat.) ± 0.076 (syst.))%, B(τ → μ ν̄μντ) = (17.342 ± 0.110 (stat.) ± 0.667 (syst.))%. From these results the ratio of the charged current coupling constants of the muon and the electron is determined to be gμ/ge = 1.0007 ± 0.0051. Assuming electron-muon universality, the Fermi constant is measured in tau lepton decays as G F = (1.1616 ± 0.0058) × 10-5 GeV-2. Furthermore, the coupling constant of the strong interaction at the tau mass scale is obtained as αs(m2 τ) = 0.322 ± 0.009 (exp.) ± 0.015 (theory).

AB - Using data collected with the L3 detector near the Z resonance, corresponding to an integrated luminosity of 150 pb-1, the branching fractions of the tau lepton into electron and muon are measured to be B(τ → eν̄eντ) = (17.806 ± 0.104 (stat.) ± 0.076 (syst.))%, B(τ → μ ν̄μντ) = (17.342 ± 0.110 (stat.) ± 0.667 (syst.))%. From these results the ratio of the charged current coupling constants of the muon and the electron is determined to be gμ/ge = 1.0007 ± 0.0051. Assuming electron-muon universality, the Fermi constant is measured in tau lepton decays as G F = (1.1616 ± 0.0058) × 10-5 GeV-2. Furthermore, the coupling constant of the strong interaction at the tau mass scale is obtained as αs(m2 τ) = 0.322 ± 0.009 (exp.) ± 0.015 (theory).

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U2 - 10.1016/S0370-2693(01)00294-5

DO - 10.1016/S0370-2693(01)00294-5

M3 - Article

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SP - 47

EP - 60

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-4

ER -