QCD Corrections to Heavy Quark Pair Production in Polarized $\gamma \gamma$ Collisions and the Intermediate Mass Higgs Signal

Abstract

Perturbative QCD one-loop corrections to the cross sections of the $b\bar{b}$ $(c\bar{c})$ quark pair production in polarized photon-photon collisions, as well as cross sections of the radiative processes photon-photon ->$b\bar{b}g$,$c\bar{c}g$ leading to two- and three-jet final states are calculated. It is shown that the signal from the intermediate mass Higgs boson is observable and precise measurements of the Higgs boson two-photon width are possible at a photon-photon collider, although the statistical significance is substantially reduced with respect to the tree level calculations. We demonstrate that virtual corrections are of the same order or larger than the Born contribution in the $J_z=0$ channel at high energy for small values of the cutoff $y_{cut}$, separating two-jet from three-jet topologies. The nature of these large corrections is elucidated. For $b\bar{b}$ pair production at $\sqrt{s_{\gamma \gamma }}\sim 100$~GeV and for small values of $y_{cut}\le 0.04$ the higher order resummation of double logarithmic terms $\mathcal{O}\left({\alpha }_s{m}_b^2/s{\ln }^2(s/m_b^2)\right)$ is needed.

18 pages, LaTeX, 13 Postscript figures, uses epsfig.sty

References in corpus (5)

• Prospects of Measuring the Parity of Higgs Particles
• Using Back-Scattered Laser Beams to Detect CP Violation in the Neutral Higgs Sector
• Three-jet final states and measuring the $\gamma \gamma$ width of the Higgs at a photon linear collider
• Heavy-Quark Production by Polarized and Unpolarized Photons in Next-to-Leading Order
• Extracting the Intermediate-Mass Higgs Resonance at Photon-Photon Colliders

Cited by in corpus (41)

• TESLA Technical Design Report, Part VI, Chapter 1: The Photon Collider at TESLA
• Theory of hard photoproduction
• Physics Opportunities of e+e- Linear Colliders
• Gold-plated processes at photon colliders
• Study of CP Property of the Higgs at a Photon Collider using $\gamma \gamma \to t\bar{t}\to lX$
• An Interaction Region for Gamma-Gamma and Gamma-Electron Collisions at TESLA/SBLC
• Detecting and Studying Higgs Bosons at a Photon-Photon Collider
• Production of MSSM Higgs Bosons in Photon-Photon Collisions
• Photoproduction of Heavy Quarks in Next-to-Leading Order QCD with Longitudinally Polarized Initial States
• The Littlest Higgs boson at a photon collider
• Higgs studies in polarized gamma-gamma collisions
• Higgs Boson Production at the Compton Collider
• All-Orders Resummation of Leading Logarithmic Contributions to Heavy Quark Production in Polarized γγCollisions
• On the resummation of double logarithms in the process Higgs --> two photons
• Light Higgs Production at a Photon Collider
• One-loop corrections to four-point functions with two external massive fermions and two external massless partons
• On radiative QCD backgrounds to exclusive H -> b bbar production at the LHC and a photon collider
• Higgs Boson Decay into Hadronic Jets
• Detecting and Studying the Lightest Pseudo-Goldstone Boson at Future $pp$, $e^{+}{e}^{-}$ and ${\mu }^{+}{\mu }^{-}$ Colliders
• Electroweak O(alpha) Corrections to W+W- Pair Production in Polarized gamma-gamma Collisions
• One-loop amplitudes for four-point functions with two external massive quarks and two external massless partons up to O(epsilon^2)
• Measuring the two-photon decay width of Intermediate-mass Higgs at a photon-photon collider
• Next-to-Leading Order Corrections to Heavy Flavour Production in Longitudinally Polarized Photon-Nucleon Collisions
• Renormalization Group Improved Heavy Quark Production in Polarized γγCollisions
• Higgs boson production in photon-photon interactions with proton, light-ion, and heavy-ion beams at current and future colliders
• Study of the single neutral top-pion production process at $\gamma \gamma$ collider
• Towards a measurement of the two-photon decay width of the Higgs boson at a Photon Collider
• Optimal Spin Basis in Polarized Photon Linear Colliders
• Heavy-quark pair production in polarized photon-photon collisions at next-to-leading order: Fully integrated total cross sections
• Higgs, SUSY and the Standard Model at $\gamma \gamma$ Colliders
• XCC: An X-ray FEL-based $\gamma \gamma$ Compton Collider Higgs Factory
• Higgs Physics at a γγCollider
• Top quark pair production and decay at a polarized photon collider
• Analytically expanded and integrated results for massive fermion production in two-photon collisions and a high precision alpha_s determination
• Heavy Quark Pair Production in Polarized Photon--Photon Collisions
• Production of MSSM Higgs Bosons in $\gamma \gamma$ Collisions
• Renormalization Group Effects in the Process $H⟶\gamma \gamma$
• Precision Mass Determination of the Higgs Boson at Photon-Photon Colliders
• On the Resummation of Large QCD Corrections to photon photon to b anti-b
• Precise measurement of $\Gamma (H⟶\gamma \gamma )$ at a PLC and theoretical consequences
• Polarized Heavy Quark Photoproduction in Next to Leading Order