Welcome to the public WWW page of the LEP Electroweak Gauge-Couplings Group

This working group performs the combinations of results on triple (TGC) and quartic (QGC) electroweak gauge boson couplings.

For questions and comments contact: Ulrich Parzefall


Latest Update:


The LEP GC Combination Reference Note for the 2005 Particle data book.



Information for conference speakers of Summer Conferences 2003:



Information for conference speakers of Summer Conferences 2002:



Information for conference speakers of Winter Conferences 2002:



OPAL Technical Note 492 - clarifying some TGC parametrisations (1997-07-01).

Working group information (protected).


Information for conference speakers of summerconferences 2001:


The following information is provided for speakers at the EPS in Budapest, Lepton-Photon in Rome and the following conferences. It provides new results of combinations from preliminary neutral triple electroweak gauge boson and quartic gauge boson coupling measurements from the four LEP experiments.

PLOTS for Budapest 2001 and following conferences:

  • (h1g,h2g,h3g,h4g).
  • (h1z,h2z,h3z,h4z).
  • (h1g),    (h1z)    (h2g),    (h2z).
  • (h3g),    (h3z),    (h4g),    (h4z).
  • (h1g - h2g),    (h1z - h2z).
  • (h3g - h4g),    (h3z - h4z).

  • (f4g,f4z,f5g,f5z).
  • (f4g),    (f4z),    (f5g),    (f5z).
  • (f4g - f4z),    (f5z - f5z).

  • Comment to sign convention in a^w couplings
  • (a0, ac, an).
  • (a0/l2) nngg+WWg,    (ac/l2) nngg+WWg,    (an/l2) WWg.


    Combination of published GC results by the LEP experiments:


    The following information is provided for the PDG 2001 udate and includes the combination of results published by end of March 2001.

    PLOTS for PDG 2001 update, including published results only:

    Information for conference speakers of winter conferences 2001:


    The following information is provided for speakers at La Thuile and Moriond 2001 and the conferences following. It provides new results of combinations from the neutral triple electroweak gauge boson couplings measurements from the four LEP experiments. The f-couplings the new combination includes now also results from Aleph and new data is added for Delphi. The h-coupling combination uses the same data as it was used for OSAKA2000, but an updated analysis from L3. For the other couplings we refer the the results from the summer conferences 2000 (see below). These combinations stay valid until at least the summer conferences 2001.

    LEP talks at La Thuile/Moriond 2001 including electroweak gauge boson couplings :

    PLOTS for Moriond 2001:


    Information for conference speakers (ICHEP 2000):


    The following information is provided for speakers at the ICHEP 2000 conference in OSAKA, starting July 27th, 2000, and the conferences following. It provides the results of the combinations of both charged and neutral triple and quartic electroweak gauge boson couplings measurements from the four LEP experiments. These combinations stay valid until at least the winter conferences 2001.

    PLOTS for Osaka 2000 (charged TGCs updated 2000/08/08):

    Talks on electroweak gauge boson couplings at ICHEP 2000 in OSAKA:


    Information for conference speakers (MORIOND 2000):


    The following information is provided for speakers at the MORIOND 2000 conferences starting March 11th, 2000, and the conferences following. It provides the results of the combinations of both charged and neutral TGC measurements from the four LEP experiments. These combinations stay valid until at least the summer conferences 2000.

    PLOTS for MORIOND 2000:

    Talk on gauge boson couplings at MORIOND 2000 (electroweak):


    Information for conference speakers (EPS 1999):


    The following information is provided for speakers at the TAMPERE EPS99 conference, 16-21 July 1999. It gives the results of the combinations of TGC measurements from the individual LEP and the DO experiments.

    PLOTS for TAMPERE EPS 1999:


    Information for conference speakers (MORIOND 1999)


    The following information is provided for speakers at the MORIOND 1999 conference, 14-20 March 1999. It gives the results of the combinations of TGC measurements from the individual LEP and the DO experiments.

    PLOTS for MORIOND 1999:


    Information for conference speakers (ICHEP 1998):


    The following information is provided for speakers at the VANCOUVER 1998 conference ICHEP98 23-29 July 1998. It gives the results of the combinations of TGC measurements from the LEP experiments.

    Final version of note describing the combination
    postscript

    Plot of all the 3 parameters dk_g,dg_Z,l_g eps

    Plot of dk_g eps

    Plot of dg_Z eps

    Plot of l_g eps

    Plot of dg_Z vs dk_g (68% and 95% contours) eps

    Plot of dg_Z vs dk_g (68% and 95% contours) eps

    Plot of dg_Z vs l_g (68% and 95% contours) eps

    Plot of dg_Z vs l_g (68% and 95% contours) eps

    Plot of l_g vs dk_g(68% and 95% contours) eps

    Plot of dg_Z vs l_g (68% and 95% contours) eps


    Information for conference speakers (MORIOND 1998)


    The following information is provided for speakers at the MORIOND conference 15-28 March 1998. It gives the results of the combinations of TGC measurements from the individual LEP experiments and D0.

    Final version of note describing the combination
    postscript

    Plot of alpha_W_phi eps

    Plot of alpha_W eps

    Plot of alpha_B_phi eps

    Plot of all alpha ps

    Plot of all alpha LEP+D0 eps

    Plot of alpha each exp LEP+D0 ps


    Information for conference speakers (EPS 1997)


    The following information is provided for speakers at the JERUSALEM EPS97 conference 19-26 Aug 1997. It gives the results of the combinations of TGC measurements from the individual LEP experiments.

    Final version of note describing combination procedure
    postscript
    tex

    Plot of alpha_W_phi postscript and eps

    Plot of alpha_W postscript and eps

    Plot of alpha_B_phi postscript and eps