DOI: 10.1140/epjc/s2003-01392-0
Prospective analysis of spin- and CP-sensitive variables
in H
ZZ
l
+1l
-1l
+2l
-2 at the LHC
C.P. Buszello, I. Fleck, P. Marquard and J.J. van der Bij Albert-Ludwigs-Universität, Fakultät für Mathematik und Physik, Physikalisches Institut, Hermann-Herder-Straße 3, 79104 Freiburg, Germany buszello@cern.ch
Ivor.Fleck@cern.ch
marquard@physik.uni-freiburg.de
jochum@phyv1.physik.uni-freiburg.de
(Received: 5 August 2003 / Revised version: 23 August 2003 / / Published online: 8 December 2003)
Abstract
A possibility to prove spin and CP-eigenvalue of a Standard Model (SM) Higgs
boson is presented. We exploit angular correlations in the subsequent decay H
ZZ
4l (muons or electrons) for Higgs masses above
200 GeV. We compare the angular distributions of the leptons originating from
the SM Higgs with those resulting from decays of hypothetical particles with
differing quantum numbers. We restrict our analysis to the use of the
Atlas-detector which is one of two multi-purpose detectors at the upcoming
14 TeV proton-proton-collider (LHC) at CERN. By applying a fast simulation of
the Atlas detector it can be shown that these correlations will be measured
sufficiently well that consistency with the spin-CP hypothesis
0+ of
the
Standard Model can be verified and the
0- and
can be ruled
out with an integrated luminosity of 100 fb
-1.
© Società Italiana di Fisica, Springer-Verlag 2004
