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تسجيل مستخدم جديدفيزياء النيوترينو من الخلفية الميكروويف الكونية والهيكل الكبير الحجم
Neutrino Physics from the Cosmic Microwave Background and Large Scale Structure
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وهذا هو تقرير حول الحالة والآفاق للكمياء لخصائص النيوترينو من خلال الخلفية النيوترينو الكوسمولوجية للتخطيط الطويل الأجل للتدريب الصيفي للمجتمع للجزئيات والحقول. وتحضر التجارب المخطط لها والتي تشتغل حاليًا لدراسة الخلفية النيوترينو الكوسمولوجية بتفصيل من خلال تأثيرها على علاقات الإبعاد-الإزاحة ونمو الهيكل. وسيحقق البرنامج الوصف في هذا المستند للعقد القادم ، بما في ذلك المسابقات البصرية التي تخص الأجسام eBOSS وDESI وتجربة تلك الجديدة للحصول على التشويش المحفوظ للإشعاع المغناطيسي الشمسي CMB-S4 المرحلة IV ، سيحقق sigma (sum m_nu) = 16 meV وsigma (N_eff) = 0.020. وسينتج تلك القياسات الجيدة للشدة تحديدا للكشف عن قيمة غير صفر لمجموع m_nu ، الحد الأدنى الذي ينبغي أن يتم توضيحه من خلال تلك التلوثات الجوية والشمسية النيوترينو حوالي 58 meV. إذا كان النيوترينو لها هيكل طبيعي للشدة الأدنى ، فسيحظر هذا القياس بشكل قاطع الهيكل المقلوب للشدة النيوترينو ، مشجعا على أحد أبرز الأسئلة المشوشة في نموذج الجزئيات القياسي --- أصل الشدة. وسيسمح هذا القياس الدقيق لـ N_eff للحصول على حساسية عالية لأي القوى الخفية والظلام التي تنتج في البداية الكبرى واختبار دقيق للتنبؤ النموذج الكوسمولوجي القياسي الذي يقول N_eff = 3.046.
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 sigma(sum m_nu) = 16 meV and sigma(N_eff) = 0.020. Such a mass measurement will produce a high significance detection of non-zero sum m_nu, 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 N_eff 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 N_eff = 3.046.
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