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A search for charged massive long-lived particles at D0

被引：0
|
作者：
Banerjee, Sudeshna [1 ]
机构：
[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
来源：
PRAMANA-JOURNAL OF PHYSICS | 2012年 / 79卷 / 04期
关键词：
Charged massive long-lived particle; D0;
D O I：
10.1007/s12043-012-0379-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Results are presented on a search for charged massive long-lived particles (CMLLPs), based on 5.2 fb(-1) of integrated luminosity collected with the D0 detector at the Fermilab Tevatron p (p) over bar collider. This search selects events in which one or more particles are reconstructed as muons but their speed and ionization energy loss (dE/dx) are different from muons produced in beam-beam collisions. CMLLPs have been predicted by several theories of physics beyond the Standard Model. In this search we exclude pair-produced long-lived gaugino-like charginos with masses below 251 GeV and higgsino-like charginos with masses below 230 GeV at 95% CL, as well as long-lived stop quarks with masses below 265 GeV. We place cross-section limits on long-lived staus as 0.04 to 0.006 pb for stau masses in the range 100 to 300 GeV.
引用
收藏
页码：829 / 832
页数：4
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