Abstract
Among all the hadronic decay channels of the Z, the b anti-b final state offers the opportunity to study the radiative corrections, not only to the gauge boson propagator but also to the Z b anti b vertex. This additional information allows to discriminate the effects of the top and Higgs mass from the effect of a possible Z-Z` mixing as predicted in some Grand Unified inspired theories. It is important in this context to measure the ratio R(b) = {Gamma}{sub Z{yields}ba}nti b/{Gamma}{sub Z{yields}had} with a relative accuracy of at most 1 pc. Two methods have been developed within ALEPH at LEP, to tag the Z {yields} b anti b decays, which both are using the fact that the b quark is heavy: one of the two tags is based on the momentum and transverse momentum of the leptons (electrons and muons) produced in the semileptonic decays of the B-hadrons, and the other one is based on the shape of the hadronic events.
Citation Formats
Henrard, P.
Testing the electroweak Standard Model through the study of beauty with ALEPH; Test du modele standard electrofaible par l`etude de la beaute avec ALEPH.
France: N. p.,
1992.
Web.
Henrard, P.
Testing the electroweak Standard Model through the study of beauty with ALEPH; Test du modele standard electrofaible par l`etude de la beaute avec ALEPH.
France.
Henrard, P.
1992.
"Testing the electroweak Standard Model through the study of beauty with ALEPH; Test du modele standard electrofaible par l`etude de la beaute avec ALEPH."
France.
@misc{etde_10127364,
title = {Testing the electroweak Standard Model through the study of beauty with ALEPH; Test du modele standard electrofaible par l`etude de la beaute avec ALEPH}
author = {Henrard, P}
abstractNote = {Among all the hadronic decay channels of the Z, the b anti-b final state offers the opportunity to study the radiative corrections, not only to the gauge boson propagator but also to the Z b anti b vertex. This additional information allows to discriminate the effects of the top and Higgs mass from the effect of a possible Z-Z` mixing as predicted in some Grand Unified inspired theories. It is important in this context to measure the ratio R(b) = {Gamma}{sub Z{yields}ba}nti b/{Gamma}{sub Z{yields}had} with a relative accuracy of at most 1 pc. Two methods have been developed within ALEPH at LEP, to tag the Z {yields} b anti b decays, which both are using the fact that the b quark is heavy: one of the two tags is based on the momentum and transverse momentum of the leptons (electrons and muons) produced in the semileptonic decays of the B-hadrons, and the other one is based on the shape of the hadronic events.}
place = {France}
year = {1992}
month = {Nov}
}
title = {Testing the electroweak Standard Model through the study of beauty with ALEPH; Test du modele standard electrofaible par l`etude de la beaute avec ALEPH}
author = {Henrard, P}
abstractNote = {Among all the hadronic decay channels of the Z, the b anti-b final state offers the opportunity to study the radiative corrections, not only to the gauge boson propagator but also to the Z b anti b vertex. This additional information allows to discriminate the effects of the top and Higgs mass from the effect of a possible Z-Z` mixing as predicted in some Grand Unified inspired theories. It is important in this context to measure the ratio R(b) = {Gamma}{sub Z{yields}ba}nti b/{Gamma}{sub Z{yields}had} with a relative accuracy of at most 1 pc. Two methods have been developed within ALEPH at LEP, to tag the Z {yields} b anti b decays, which both are using the fact that the b quark is heavy: one of the two tags is based on the momentum and transverse momentum of the leptons (electrons and muons) produced in the semileptonic decays of the B-hadrons, and the other one is based on the shape of the hadronic events.}
place = {France}
year = {1992}
month = {Nov}
}