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

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

Abstract.

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.

Keywords

Pair Production Quark Mass Production Cross Section Single Production Boson Mass 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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