arXiv subjects

D. Bowser-Chao

Publications and source records attributed to D. Bowser-Chao.

3 recordsLinked to original sources

arXiv1998

Higgs-photon associated production at hadron colliders

We present cross sections for the reactions p pbar --> H gamma and pp --> Hγarising from the subprocess q qbar --> H gamma. The calculation includes the complete one-loop contribution from all light quarks as well as the tree contributions from light quarks and c and b quarks. These are the main sources of Higgs-photon associated production at hadron colliders. At Tevatron energies, the cross section is typically between 0.1fb and 1 fb for 80 Gev < m_H < 160 GeV, and at LHC energies it exceeds about 2 fb over the same range of m_H. While substantial, these cross sections are not large enough to produce a signal which is discernable above the backgrounds from q qbar-->b bbar gamma and gg-->b bbar gamma.

hep-ph↗

arXiv1997

Higgs-photon production at μ\barμ colliders

We present cross sections for the reaction $μ\barμ\to Hγ$ over a range of $μ\barμ$ collider energies. The amplitudes for this process receive tree level contributions and one-loop contributions, which are of comparable magnitude. The tree level amplitudes are dominated by helicity non-flip terms and the one-loop amplitudes are dominated by helicity flip terms. As a consequence, the interference terms between the tree level and one-loop contributions are negligible. For a 500 GeV $μ\barμ$ collider, the cross section for $Hγ$ associated production approaches 0.1 fb.

hep-ph↗

arXiv1995

Optimized Top Quark Analysis with the Decision Tree

We present an optimized and physically motivated method for separating top quark signal events from background events at the Tevatron. For the top quark signal $t\bar t \to e/μ+ 4$ jets, we show how to reject all but $25\%$ of the background in a data sample while retaining $80\%$ of the signal, without introducing bias into the subsequent mass measurement. The technique used is the Binary Decision Tree. Combining this highly efficient procedure for signal identification with a novel algorithm for top quark reconstruction, we propose a powerful new way to measure the top quark mass.

hep-ph↗