Heavy charged Higgs boson production at next generation \(e^\pm\gamma\) colliders

  • S. Kanemura
  • S. Moretti
  • K. Odagiri
Theoretical physics


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, \(\sqrt s_{ee}\gtrsim 2M_{H^\pm}\), 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.


Pair Production Quark Mass Production Cross Section Single Production Boson Mass 
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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2001

Authors and Affiliations

  • S. Kanemura
    • 1
  • S. Moretti
    • 2
  • K. Odagiri
    • 3
  1. 1.Physics and Astronomy Department, Michigan State University, East Lansing, MI 48824–1116, USAUS
  2. 2.Theory Division, CERN, 1211 Genève 23, SwitzerlandCH
  3. 3.Theory Group, KEK, 1–1 Oho, Tsukuba, Ibaraki 305–0801, JapanJP

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