Neutrinos and primordial nucleosynthesis

被引:0
|
作者
Mangano, G [1 ]
Serpico, PD
机构
[1] Univ Naples Federico II, Dipartimento Sci Fisiche, Naples, Italy
[2] Complesso Univ Monte Sant Angelo, Sez Napoli, INFN, I-80126 Naples, Italy
[3] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
关键词
D O I
10.1016/j.nuclphysbps.2005.04.038
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The importance of the Big Bang Nucleosynthesis (BBN) as a unique tool for studying neutrino properties is discussed, and the recent steps towards a self-consistent and robust handling of the weak reaction decoupling from the thermal bath as well as of the neutrino reheating following the e(+) - e(-) annihilation are summarized. We also emphasize the important role of the Cosmic Microwave Background (CMB) anisotropy in providing an accurate and independent determination of the baryon density parameter w(b). The BBN is presently a powerful parameter-free theory that can test the standard scenario of the neutrino decoupling in the early Universe. Moreover it can constrain new physics in the neutrino sector. The perspectives for improvements in the next years are outlined.
引用
收藏
页码:351 / 354
页数:4
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