Heavy quark production at a photon linear collider

Kühn, Johann H.; Mirkes, E.; Steegborn, J.

doi:10.1007/bf01561480

Cited by 51 publications

(61 citation statements)

References 12 publications

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“…agree with the results of papers [16,17] to the accuracy better than 0.3%. The total cross sections calculated up to the order α 2 α s are given by the sum of the tree-level contribution (Section 2), the interference term between the one-loop and tree-level contributions, and the tree level contribution from the quark pair production accompanied by the gluon emission γγ → qqg.…”

Section: Qcd One-loop Corrections To Polarized Cross Sectionssupporting

confidence: 90%

“…But the question remains how QCD radiative corrections influence these conclusions. Though it is known that far above the threshold the magnitude of these corrections is moderate for unpolarized collisions [16,17], one can expect that their effects will be especially large for the qq production in the J z = 0 helicity state, where the tree level contribution is suppressed by the factor of m 2 q /s. We presented our first results on the one-loop QCD corrections to the bb/cc quark pair production in polarized photon-photon collisions in [18].…”

Section: Introductionmentioning

confidence: 99%

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QCD corrections to heavy quark pair production in polarizedγγcollisions and the intermediate-mass Higgs boson signal

Jikia

Tkabladze

1996

Phys. Rev. D

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Perturbative QCD one-loop corrections to the cross sections of the bb(cc) quark pair production in polarized photon-photon collisions, as well as cross sections of the radiative processes γγ → bbg, ccg 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 twophoton 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 bb pair production at √ s γγ ∼ 100 GeV and for small values of y cut ≤ 0.04 the higher order resummation of double logarithmic terms O α s m 2 b /s ln 2 (s/m 2 b ) is needed.

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Section: Qcd One-loop Corrections To Polarized Cross Sectionssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

QCD corrections to heavy quark pair production in polarizedγγcollisions and the intermediate-mass Higgs boson signal

Jikia

Tkabladze

1996

Phys. Rev. D

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“…The J Z = 0 events containing the signal are then enhanced, while the J Z = ±2 events are suppressed [488,605].…”

Section: Higgs Boson Production As An S-channel Resonancementioning

confidence: 99%

The anatomy of electroweak symmetry breaking

2008

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“…This maximum for equal photon helicities is at 70-80% of the e ± e − c.m. energy [6,13]. A cut ∆ = ±3 GeV [14] of the photon spectrum around √ s γγ = M A accounts for the limited energy resolution in the final state.…”

mentioning

confidence: 99%

Production of MSSM Higgs bosons at future γγ colliders

Mühlleitner¹

2001

AIP Conference Proceedings

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Abstract. Future γγ colliders allow the production of the heavy neutral MSSM Higgs bosons H and A as single resonances. The prospects of finding these particles in the bb and the neutralino-pair final states have been analysed. The H, A bosons can be discovered for medium values of tan β with masses up to 70-80% of the initial e ± e − c.m. energy. This production mode thus covers parts of the supersymmetric parameter space that are not accessible at other colliders.

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Heavy quark production at a photon linear collider

Cited by 51 publications

References 12 publications

QCD corrections to heavy quark pair production in polarizedγγcollisions and the intermediate-mass Higgs boson signal

QCD corrections to heavy quark pair production in polarizedγγcollisions and the intermediate-mass Higgs boson signal

The anatomy of electroweak symmetry breaking

Production of MSSM Higgs bosons at future γγ colliders

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