| Measurement of the transverse polarization of Lambda and (Lambda)over-bar hyperons produced in proton-proton collisions at root s=7 TeV using the ATLAS detector |
| ATLAS Collaboration
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| 2015
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发表期刊 | PHYSICAL REVIEW D
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卷号 | 91期号:3页码:32004 |
摘要 | The transverse polarization of Lambda and (Lambda) over bar hyperons produced in proton-proton collisions at a center-of-mass energy of 7 TeV is measured. The analysis uses 760 mu b(-1) of minimum bias data collected by the ATLAS detector at the LHC in the year 2010. The measured transverse polarization averaged over Feynman x(F) from 5 x 10(-5) to 0.01 and transverse momentum p(T) from 0.8 to 15 GeV is -0.010 +/- 0.005(stat) +/- 0.004(syst) for Lambda and 0.002 +/- 0.006(stat) +/- 0.004(syst) for (Lambda) over bar. It is also measured as a function of x(F) and p(T), but no significant dependence on these variables is observed. Prior to this measurement, the polarization was measured at fixed-target experiments with center-of-mass energies up to about 40 GeV. The ATLAS results are compatible with the extrapolation of a fit from previous measurements to the x(F) range covered by this measurement. |
文章类型 | Article
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学科领域 | Astronomy & Astrophysics; Physics
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DOI | 10.1103/PhysRevD.91.032004
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收录类别 | SCI
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WOS类目 | Astronomy & Astrophysics
; Physics, Particles & Fields
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WOS记录号 | WOS:000349487000001
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ihep.ac.cn/handle/311005/228095
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专题 | 实验物理中心
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推荐引用方式 GB/T 7714 |
ATLAS Collaboration. Measurement of the transverse polarization of Lambda and (Lambda)over-bar hyperons produced in proton-proton collisions at root s=7 TeV using the ATLAS detector[J]. PHYSICAL REVIEW D,2015,91(3):32004.
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APA |
ATLAS Collaboration.(2015).Measurement of the transverse polarization of Lambda and (Lambda)over-bar hyperons produced in proton-proton collisions at root s=7 TeV using the ATLAS detector.PHYSICAL REVIEW D,91(3),32004.
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MLA |
ATLAS Collaboration."Measurement of the transverse polarization of Lambda and (Lambda)over-bar hyperons produced in proton-proton collisions at root s=7 TeV using the ATLAS detector".PHYSICAL REVIEW D 91.3(2015):32004.
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