A Search for Long-Lived Doubly-Charged Higgs Boson Production in anti-p p Collisions at sqrt(s)=1.96 TeV using RunII CDF

Tuttle, Joshua P. ; U., /Duke

Fermi National Accelerator Laboratory

关键词: Daughter Products;    Fermilab Tevatron;    Luminosity;    Ionization;    72 Physics Of Elementary Particles And Fields;   

DOI  :  10.2172/948160
RP-ID  :  FERMILAB-MASTERS-2005-03
RP-ID  :  AC02-07CH11359
RP-ID  :  948160

美国|英语

来源: UNT Digital Library

【 摘 要 】

We present a search for a quasi-stable doubly-charged Higgs particle at CDF using the Fermilab Tevatron for {radical}s = 1.96 TeV. The data presented are from approximately 290 pb{sup -1} of integrated luminosity collected using the upgraded Run 2 Collider Detector at Fermilab. These data were taken between February, 2002 and February, 2004. The long-lived decay products of Z's are selected in the central detector region (|{eta}| < 1.0). They select events triggered on a muon candidate having p{sub T} > 18 GeV in the event. After offline reconstruction, they require two isolated tracks (p{sub T} > 20 GeV) in the event, one of which points to a stub in a muon detector. Since the search is based on the increased ionization a doubly-charged particle would produce as it passes through the detector, they require that both tracks be highly ionizing for an event to be selected as a H{sup {+-}{+-}} candidate. No such candidates are observed in the data. They set a lower mass limit of 146 GeV on a quasi-stable H{sup {+-}{+-}} boson.