| Автор | Michael Melles |
| Дата выпуска | 1999-11-01 |
| dc.description | With the LEP II Higgs search approaching exclusion limits on low values of tan β ~ 2 it becomes increasingly important to investigate physical quantities sensitive to large masses of a pseudoscalar Higgs mass. This regime is difficult and over a large range of tan β impossible to cover at the LHC proton proton collider. In this paper we focus on the achievable statistical precision of the Higgs decay into two photons at a future γγ collider (PLC) in the MSSM mass range below 130 GeV. The MSSM and SM predictions for Γ(H → γγ) can differ by up to 10% even in the decoupling limit of large m<sub>A</sub>. We summarize recent progress in both the theoretical understanding of the background process γγ → qq̅, q = {b,c}, and in the expected detector performance allow for a high accuracy of the lightest MSSM or SM Higgs boson decay into a bb̅ pair. We find that for optimized but still realistic detector and accelerator assumptions, statistically a 1.4% accuracy is feasible after about four years of collecting data for a Higgs boson mass which excludes tan β < 2. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Precise measurement of Γ(H → γγ) at a PLC and theoretical consequences |
| Тип | paper |
| DOI | 10.1088/0954-3899/25/11/306 |
| Electronic ISSN | 1361-6471 |
| Print ISSN | 0954-3899 |
| Журнал | Journal of Physics G: Nuclear and Particle Physics |
| Том | 25 |
| Первая страница | 2243 |
| Последняя страница | 2252 |
| Аффилиация | Michael Melles; Department of Physics, University of Durham, Durham DH1 3LE, UK |
| Выпуск | 11 |
