Global oscillation analysis of solar neutrino data with helioseismically constrained fluxes

被引：12

作者：

Choubey, S

Goswami, S

Kar, K

Antia, HM

Chitre, SM

机构：

[1] Saha Inst Nucl Phys, Kolkata 700064, India

[2] Tata Inst Fundamental Res, Mumbai 400005, India

[3] Queen Mary Univ London, London E1 4NS, England

来源：

PHYSICAL REVIEW D | 2001年 / 64卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.64.113001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A seismic model for the Sun calculated using the accurate helioseismic data predicts a lower B-8 neutrino flux as compared to the standard solar model (SSM). However, there persists a discrepancy between the predicted and measured neutrino fluxes and it seems necessary to invoke neutrino oscillations to explain the measurements. In this work, we hav performed a global. unified oscillation analysis of the latest solar neutrino data (including the results of SNO charged Current rate) using the seismic model fluxes as theoretical predictions. We determine the best-fit values of the neutrino oscillation parameters and the chi (2)(min) for both nu (e) -nu (active) and nu (e)-v(sterile) cases and present the allowed parameter regions in the Deltam(2)-tan(2) theta plane for nu (e) -nu (active) transition. The results are compared with those obtained using the latest SSM by Bahcall and co-workers.

引用

页数：10

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