On the possibility of a very light A^0 at low \tanβ
| dc.creator | Akeroyd, A. G. | |
| dc.creator | Baek, S. | |
| dc.creator | Cho, Gi-Chol | |
| dc.creator | Hagiwara, K. | |
| dc.date | 2002-05-10 | |
| dc.date | 2002-07-03 | |
| dc.date.accessioned | 2026-07-07T12:02:54Z | |
| dc.date.available | 2026-07-07T12:02:54Z | |
| dc.description | The searches at LEP II for the processes e^+e^-\to h^0Z and e^+e^-\to h^0A^0 in the Minimal Supersymmetric Standard Model (MSSM) fail to exclude regions of the m_h,m_A plane where \tanβ<1, thus allowing a very light A^0 (m_A< 20 GeV). Such a parameter choice would predict a light H^\pm with m_{H^\pm}< m_W. Although the potentially large branching ratio for H^\pm \to A^0 W^* would ensure that H^\pm also escaped detection in direct searches at LEP II and the Tevatron Run I, we show that this elusive parameter space is overwhelmingly disfavoured by electroweak precision measurements. | |
| dc.description | 11 pages, 2 figures, Revtex, references added, minor additions to text | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0205094 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0205094 | |
| dc.identifier | Phys.Rev.D66:037702,2002 | |
| dc.identifier | doi:10.1103/PhysRevD.66.037702 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207595 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | On the possibility of a very light A^0 at low \tanβ | |
| dc.type | text |