Speaker
Georg Ralf Weiglein
(Deutsches Elektronen-Synchrotron (DE))
Description
We analyze possible signatures of an ALP with masses above $\sim 400$ GeV at the (HL-)LHC in the $t \bar t$ decay channel. In particular, we demonstrate that such an ALP could be distinguished from a CP-even Higgs boson with the same mass and the same $t \bar t$ cross section with the help of $m_{tt}$ distributions. We obtain new limits on the effective ALP couplings to top quarks and gluons.
Authors
Afiq Aizuddin Anuar
(CERN (CH))
Alexander Grohsjean
(Hamburg University (DE))
Anke Biekoetter
(JGU Mainz)
Christian Schwanenberger
(Deutsches Elektronen-Synchrotron (DE))
Georg Ralf Weiglein
(Deutsches Elektronen-Synchrotron (DE))
Laurids Jeppe
(Deutsches Elektronen-Synchrotron (DE))
Sven Heinemeyer
(CSIC (Madrid, ES))
Thomas Biekötter
