| DC 欄位 |
值 |
語言 |
| DC.contributor | 物理學系 | zh_TW |
| DC.creator | 楊毅 | zh_TW |
| DC.creator | Yi Yang | en_US |
| dc.date.accessioned | 2006-7-14T07:39:07Z | |
| dc.date.available | 2006-7-14T07:39:07Z | |
| dc.date.issued | 2006 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=93222028 | |
| dc.contributor.department | 物理學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本篇論文是使用美國費米加速器實驗室CDF探測器之1.1fb 數據，利用兩個J/ψ
都衰變至兩個muon之途徑尋找ηb粒子。我們發現有3 個候選事例包括3.6 個背景
事例在我們的搜尋範圍內(9.0 至9.5GeV)。而本篇論文我們給出了ηb的生成截
面，相對於從B強子來的J/ψ的生成截面：
5.0 10 3 | zh_TW |
| dc.description.abstract | In this thesis, we present the search for eta_b in CDF by looking into the exclusive eta_b decays into two J/psi where both J/psi decay into di-muon. Using the 1.1 fb^-1 data, we observed 3 candidate events with expected 3.6 background events in the search window, 9.0 to 9.5 GeV. The eta
_b production cross section, in relative to the cross section of b-Hadron decay to J/psi X, is measured in this analysis. The upper limit for eta_b production cross section with rapidity |y|<0.6, when multiplied by the decay branching fractions, is found to be < 5.0 * 10^-3 | en_US |
| DC.subject | 費米實驗室 | zh_TW |
| DC.subject | Fermilab CDF | en_US |
| DC.title | 費米實驗室CDFII探測器利用J/psi J/psi
衰變途徑尋找eta_b粒子之研究 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Search for ηb in the exclusive decaymodes of J/ψ J/ψ at CDF II Fermilab
| en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |