Multiple Spectral Splits of Supernova Neutrinos

被引:197
作者
Dasgupta, Basudeb [1 ]
Dighe, Amol [2 ]
Raffelt, Georg G. [1 ]
Smirnov, Alexei Yu. [3 ,4 ]
机构
[1] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[3] Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy
[4] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
关键词
OSCILLATIONS;
D O I
10.1103/PhysRevLett.103.051105
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Collective oscillations of supernova neutrinos swap the spectra f(nu e) (E) and f((nu) over bare) (E) with those of another flavor in certain energy intervals bounded by sharp spectral splits. This phenomenon is far more general than previously appreciated: typically one finds one or more swaps and accompanying splits in the nu and (nu) over bar channels for both inverted and normal neutrino mass hierarchies. Depending on an instability condition, swaps develop around spectral crossings (energies where f(nu e) = f(nu x), f((nu) over bare) = f((nu) over barx) as well as E -> infinity where all fluxes vanish), and the widths of swaps are determined by the spectra and fluxes. Washout by multiangle decoherence varies across the spectrum and splits can survive as sharp spectral features.
引用
收藏
页数:4
相关论文
共 34 条
[1]   Neutrino-neutrino interactions and flavour mixing in dense matter [J].
Balantekin, A. B. ;
Pehlivan, Y. .
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2007, 34 (01) :47-65
[2]  
DASGUPTA B, IN PRESS
[3]   Collective neutrino oscillations in nonspherical geometry [J].
Dasgupta, Basudeb ;
Dighe, Amol ;
Mirizzi, Alessandro ;
Raffelt, Georg .
PHYSICAL REVIEW D, 2008, 78 (03)
[4]   Collective three-flavor oscillations of supernova neutrinos [J].
Dasgupta, Basudeb ;
Dighe, Amol .
PHYSICAL REVIEW D, 2008, 77 (11)
[5]   Identifying Neutrino Mass Hierarchy at Extremely Small θ13 through Earth Matter Effects in a Supernova Signal [J].
Dasgupta, Basudeb ;
Dighe, Amol ;
Mirizzi, Alessandro .
PHYSICAL REVIEW LETTERS, 2008, 101 (17)
[6]   Spectral split in a prompt supernova neutrino burst: Analytic three-flavor treatment [J].
Dasgupta, Basudeb ;
Dighe, Amol ;
Mirizzi, Alessandro ;
Raffelt, Georg G. .
PHYSICAL REVIEW D, 2008, 77 (11)
[7]   Physics potential of future supernova neutrino observations [J].
Dighe, Amol .
XXIII CONFERENCE ON NEUTRINO PHYSICS AND ASTROPHYSICS, 2008, 136
[8]   Stepwise spectral swapping with three neutrino flavors [J].
Duan, Huaiyu ;
Fuller, George M. ;
Qian, Yong-Zhong .
PHYSICAL REVIEW D, 2008, 77 (08)
[9]   Flavor evolution of the neutronization neutrino burst from an O-Ne-Mg core-collapse supernova [J].
Duan, Huaiyu ;
Fuller, George M. ;
Carlson, J. ;
Qian, Yong-Zhong .
PHYSICAL REVIEW LETTERS, 2008, 100 (02)
[10]   Analysis of collective neutrino flavor transformation in supernovae [J].
Duan, Huaiyu ;
Fuller, George M. ;
Carlson, J. ;
Qian, Yong-Zhong .
PHYSICAL REVIEW D, 2007, 75 (12)