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Measurement of the (Sigma)over-bar(-) lifetime and direct comparison with the Sigma(+) lifetime
Barbosa, RF; Albuquerque, IF; Bondar, NF; Carrigan, R; Chen, D; Cooper, PS; Dai, LS; Denisov, AS; Dobrovolsky, AC; Dubbs, T; Endler, AMF; Escobar, CO; Foucher, M; Golovtsov, VL; Gottschalk, H; Gouffon, P; Grachev, VT; Khanzadeev, AV; Kubantsev, MA; Kuropatkin, NP; Lach, J; Langland, J; Lang, PF; Li, CZ; Li, YS; Luksys, M; Mahon, JRP; McCliment, E; Morelos, A; Newsom, C; Maia, MCP; Samsonov, VM; Schegelsky, VA; Shi, HZ; Smith, VJ; Tang, FU; Terentyev, NK; Timm, S; Tkatch, II; Uvarov, LN; Vorobyov, AA; Jie, Y; Zhao, WH; Zheng, SC; Zhong, YY
2000
发表期刊PHYSICAL REVIEW D
卷号61期号:3页码:31101
通讯作者Univ Sao Paulo, Inst Fis, BR-05508 Sao Paulo, Brazil ; Fermi Natl Accelerator Lab, Batavia, IL 60510 USA ; Petersburg Nucl Phys Inst, Gatchina, Russia ; Inst High Energy Phys, Beijing 100039, Peoples R China ; Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England ; Carnegie Mellon Univ, Pittsburgh, PA 15213 USA ; Univ Iowa, Iowa City, IA 52242 USA ; Inst Theoret & Expt Phys, Moscow 117259, Russia ; SUNY Albany, Albany, NY 12222 USA ; Univ Fed Paraiba, BR-58059900 Joao Pessoa, Paraiba, Brazil ; Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil ; CNPq, Rio De Janeiro, Brazil ; Yale Univ, JW Gibbs Lab, New Haven, CT 06511 USA
文章类型Article
摘要We have measured the lifetime of the <(Sigma)over bar>(-) using the Fermilab, Proton Center 375 GeV/c charged hyperon beam. We obtained (80.43+/-0.80+/-0.14) ps. We also measured the lifetime of the Sigma(+), obtaining (80.38 +/-0.40+/-0.14) ps, in agreement with the Particle Data Group value. A direct comparison between the two lifetimes from the ratio of the decay curves gives a fractional lifetime difference of Delta tau/<(tau)over bar>=(-0.06+/-1.12)%, consistent with equal lifetimes for baryon and antibaryon as required by CPT invariance.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000085079600001
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240524
专题实验物理中心
作者单位中国科学院高能物理研究所
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Barbosa, RF,Albuquerque, IF,Bondar, NF,et al. Measurement of the (Sigma)over-bar(-) lifetime and direct comparison with the Sigma(+) lifetime[J]. PHYSICAL REVIEW D,2000,61(3):31101.
APA Barbosa, RF.,Albuquerque, IF.,Bondar, NF.,Carrigan, R.,Chen, D.,...&Zhong, YY.(2000).Measurement of the (Sigma)over-bar(-) lifetime and direct comparison with the Sigma(+) lifetime.PHYSICAL REVIEW D,61(3),31101.
MLA Barbosa, RF,et al."Measurement of the (Sigma)over-bar(-) lifetime and direct comparison with the Sigma(+) lifetime".PHYSICAL REVIEW D 61.3(2000):31101.
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