Heavy charged Higgs boson production at next generation $e^\pmγ$ colliders

Details Heavy charged Higgs boson production at next generation $e^\pmγ$ colliders Heavy charged Higgs boson production at next generation $e^\pmγ$ colliders

2001-04-18

arxiv.org/abs/hep-ph/0104180v1

Eur.Phys.J.C22:401-410,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, latex, 9 figures

Scientific paper

10.1007/s100520100828

We assess the potential of future electron-positron linear colliders operating in the $e^\pm\gamma$ mode in detecting charged Higgs bosons with mass around and larger than the top quark mass, using Compton back-scattered photons from laser light. We compare the pair production mode, $e^-\gamma\to e^- H^+H^-$, to a variety of channels involving only one charged Higgs scalar in the final state, such as the tree-level processes $e^-\gamma\to \nu_e H^- \Phi^0 $ ($\Phi^0=h^0,H^0$ and $A^0$) and $e^-\gamma\to \nu_e f\bar f H^-$ ($f=b,\tau$ and $\nu_\tau$) as well as the loop-induced channel $e^-\gamma\to \nu_e H^-$. We show that, when the charged Higgs boson mass is smaller than or comparable to half the collider energy, $\sqrt s_{ee}\gsim 2M_{H^\pm}$, single production cross sections are of the same size as the pair production rate, whereas, for charged Higgs boson masses larger than $\sqrt s_{ee}/2$, all processes are heavily suppressed. In general, production cross sections of charged Higgs bosons via $e^\pm\gamma$ scatterings are smaller than those induced at an $e^+e^-$ collider and the latter represents a better option to produce and analyse such particles.

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