کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1770671 1523363 2015 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Neutrino physics from the cosmic microwave background and large scale structure
ترجمه فارسی عنوان
فیزیک نوری از پس زمینه مایکروویو کیهانی و ساختار مقیاس بزرگ
کلمات کلیدی
نوریونوس، کیهان شناسی، پس زمینه مایکروویو کیهانی، ساختار مقیاس بزرگ
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
چکیده انگلیسی

This is a report on the status and prospects of the quantification of neutrino properties through the cosmological neutrino background for the Cosmic Frontier of the Division of Particles and Fields Community Summer Study long-term planning exercise. Experiments planned and underway are prepared to study the cosmological neutrino background in detail via its influence on distance-redshift relations and the growth of structure. The program for the next decade described in this document, including upcoming spectroscopic galaxy surveys eBOSS and DESI and a new Stage-IV CMB polarization experiment CMB-S4, will achieve σ  (σmν)(σmν) = 16 meV and σ  (Neff)(Neff) = 0.020. Such a mass measurement will produce a high significance detection of non-zero σmνσmν, whose lower bound derived from atmospheric and solar neutrino oscillation data is about 58 meV. If neutrinos have a minimal normal mass hierarchy, this measurement will definitively rule out the inverted neutrino mass hierarchy, shedding light on one of the most puzzling aspects of the Standard Model of particle physics — the origin of mass. This precise a measurement of NeffNeff will allow for high sensitivity to any light and dark degrees of freedom produced in the big bang and a precision test of the standard cosmological model prediction that Neff=3.046.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Astroparticle Physics - Volume 63, 15 March 2015, Pages 66–80
نویسندگان
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