Measurement of gA and gv, the neutral current coupling constants to leptons

L3 Collaboration; X. Leytens

doi:10.1016/0370-2693(90)90603-4

Measurement of g_A and g_v, the neutral current coupling constants to leptons

L3 Collaboration
, X. Leytens

Research output: Contribution to journal › Article › Academic › peer-review

24 Citations (Scopus)

79 Downloads (Pure)

Abstract

We have measured both the rates and the forward-backward asymmetry of ℓ⁺ℓ^- from Z⁰→ℓ⁺ℓ^- (where ℓ=μ, τ) with the L3 detector. We obtained Γ_ℓℓ=88±4±3 MeV and the vector neutral current coupling constant, g_v=0.00±0.07 and the axial vector neutral current coupling constant, g_A=-0.515±0.015.

Original language	English
Pages (from-to)	109-115
Number of pages	7
Journal	Physics Letters B
Volume	236
Issue number	1
DOIs	https://doi.org/10.1016/0370-2693(90)90603-4
Publication status	Published - 8 Feb 1990
Externally published	Yes

Funding

o Tata Institute of Fundamental Research, Bombay 400 005, India P INFN - Sezione di Roma and University of Rome "La Sapienza", 1-00185 Rome, Italy q Princeton University, Princeton, NJ 08544, USA Union College, Schenectady, NY 12308, USA University of Geneva, CH-1211 Geneva 4, Switzerland t Laboratoire de Physique des Particules, LAPP, F-74019 Annecy-le-Vieux, France Central Research Institute for Physics of the Hungarian Academy of Sciences, H-1525 Budapest 114, Hungary L Physikalisches Institut, RWTH, D-5100Aachen, FRG ~ and III. Physikalisches Institut, R WTH, D-51 O0 Aachen, FRG w National Institute for High Energy Physics, NIKHEF, NL-IO09 DB Amsterdam, The Netherlands and NIKHEF-H and University of Nijmegen, NL-6525 ED Nijmegen, The Netherlands Paul Scherrer Institut (PSI), Wiirenlingen, Switzerland Y University of Lausanne, CH-IOI5 Lausanne, Switzerland University of California, San Diego, CA 92182, USA '~ Carnegie Mellon University, Pittsburgh, PA 15213, USA B Institut de Physique Nucl~aire de Lyon, IN2P3-CNRS/Universitk Claude Bernard, F-69622 Villeurbanne Cedex, National Science Council Taiwan, Rep. China 8 Institute of High Energy Physics, IHEP, Beijing, P.R. China Chinese University of Science and Technology, USTC, Hefei, Anhui 230 029, P.R. China ; High Energy Physics Institute, DDR-1615 Zeuthen-Berlin, GDR n California Institute of Technology, Pasadena, CA 91125, USA o Shanghai Institute of Ceramics, SIC, Shanghai, P.R. China Harvard University, Cambridge, MA 02139, USA We wish to thank CERN for its hospitalitya nd help. We want particularlyt o expresso ur gratitudet o the LEP division: it is their excellenta chievemenwt hich made this experimentp ossible.W e acknowledgeth e support of all the funding agenciesw hich contributed to this experiment.

Access to Document

10.1016/0370-2693(90)90603-4

publisher versionFinal published version, 484 KB

Cite this

@article{f0b4bfc3a1f94c3c9dd5baa772ff7006,

title = "Measurement of gA and gv, the neutral current coupling constants to leptons",

abstract = "We have measured both the rates and the forward-backward asymmetry of ℓ+ℓ- from Z0→ℓ+ℓ- (where ℓ=μ, τ) with the L3 detector. We obtained Γℓℓ=88±4±3 MeV and the vector neutral current coupling constant, gv=0.00±0.07 and the axial vector neutral current coupling constant, gA=-0.515±0.015.",

author = "\{L3 Collaboration\} and B. Adeva and O. Adriani and M. Aguilar-Benitez and H. Akbari and J. Alcaraz and A. Aloisio and G. Alverson and Alviggi, \{M. G.\} and Q. An and H. Anderhub and Andersson, \{A. L.\} and Andreev, \{V. P.\} and T. Angelov and L. Antonov and D. Antreasyan and A. Arefiev and B. Auroy and T. Azemoon and T. Aziz and Baba, \{P. V.K.S.\} and P. Bagnaia and Bakken, \{J. A.\} and L. Baksay and Ball, \{R. C.\} and S. Banerjee and J. Bao and L. Barone and A. Bay and U. Becker and S. Beingessner and Bencze, \{Gy L.\} and J. Berdugo and P. Berges and B. Bertucci and Betev, \{B. L.\} and A. Biland and R. Bizzarri and Blaising, \{J. J.\} and P. Bl{\"o}meke and B. Blumenfeld and Bobbink, \{G. J.\} and M. Bocciolini and W. B{\"o}hlen and A. B{\"o}hm and T. B{\"o}hringer and B. Borgia and D. Bourilkov and M. Bourquin and D. Boutigny and X. Leytens",

year = "1990",

month = feb,

day = "8",

doi = "10.1016/0370-2693(90)90603-4",

language = "English",

volume = "236",

pages = "109--115",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - Measurement of gA and gv, the neutral current coupling constants to leptons

AU - L3 Collaboration

AU - Adeva, B.

AU - Adriani, O.

AU - Aguilar-Benitez, M.

AU - Akbari, H.

AU - Alcaraz, J.

AU - Aloisio, A.

AU - Alverson, G.

AU - Alviggi, M. G.

AU - An, Q.

AU - Anderhub, H.

AU - Andersson, A. L.

AU - Andreev, V. P.

AU - Angelov, T.

AU - Antonov, L.

AU - Antreasyan, D.

AU - Arefiev, A.

AU - Auroy, B.

AU - Azemoon, T.

AU - Aziz, T.

AU - Baba, P. V.K.S.

AU - Bagnaia, P.

AU - Bakken, J. A.

AU - Baksay, L.

AU - Ball, R. C.

AU - Banerjee, S.

AU - Bao, J.

AU - Barone, L.

AU - Bay, A.

AU - Becker, U.

AU - Beingessner, S.

AU - Bencze, Gy L.

AU - Berdugo, J.

AU - Berges, P.

AU - Bertucci, B.

AU - Betev, B. L.

AU - Biland, A.

AU - Bizzarri, R.

AU - Blaising, J. J.

AU - Blömeke, P.

AU - Blumenfeld, B.

AU - Bobbink, G. J.

AU - Bocciolini, M.

AU - Böhlen, W.

AU - Böhm, A.

AU - Böhringer, T.

AU - Borgia, B.

AU - Bourilkov, D.

AU - Bourquin, M.

AU - Boutigny, D.

AU - Leytens, X.

PY - 1990/2/8

Y1 - 1990/2/8

N2 - We have measured both the rates and the forward-backward asymmetry of ℓ+ℓ- from Z0→ℓ+ℓ- (where ℓ=μ, τ) with the L3 detector. We obtained Γℓℓ=88±4±3 MeV and the vector neutral current coupling constant, gv=0.00±0.07 and the axial vector neutral current coupling constant, gA=-0.515±0.015.

AB - We have measured both the rates and the forward-backward asymmetry of ℓ+ℓ- from Z0→ℓ+ℓ- (where ℓ=μ, τ) with the L3 detector. We obtained Γℓℓ=88±4±3 MeV and the vector neutral current coupling constant, gv=0.00±0.07 and the axial vector neutral current coupling constant, gA=-0.515±0.015.

UR - https://www.scopus.com/pages/publications/0011628818

U2 - 10.1016/0370-2693(90)90603-4

DO - 10.1016/0370-2693(90)90603-4

M3 - Article

AN - SCOPUS:0011628818

SN - 0370-2693

VL - 236

SP - 109

EP - 115

JO - Physics Letters B

JF - Physics Letters B

IS - 1

ER -

Measurement of g_A and g_v, the neutral current coupling constants to leptons

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this