2024-03-28T18:30:46Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/119522017-01-27T10:48:12Zcom_10261_61com_10261_4col_10261_314
Role of dense matter in collective supernova neutrino transformations
Esteban-Pretel, Andreu
Mirizzi, A.
Pastor, Sergio
Tomàs, Ricard
Raffelt, Georg G.
Serpico, P. D.
Sigl, Günter
[PACS] Neutrino mass and mixing
[PACS] Supernovae
6 pages, 2 figures.-- PACS nrs.: 14.60.Pq; 97.60.Bw.-- ArXiv pre-print available at: http://arxiv.org/abs/0807.0659
For neutrinos streaming from a supernova core, dense matter suppresses self-induced flavor transformations if the electron density n(e) significantly exceeds the neutrino density n(nu) in the conversion region. If n(e) is comparable to n(nu), one finds multiangle decoherence, whereas the standard self-induced transformation behavior requires that in the transformation region n(nu) is safely above n(e). This condition need not be satisfied in the early phase after the supernova core bounce. Our new multiangle effect is a subtle consequence of neutrinos traveling on different trajectories when streaming from a source that is not pointlike.
We acknowledge partial support by the DFG (Germany) under Grants No. TR-27 and No. SFB-676, by The Cluster of Excellence "Origin and Structure of the Universe", by the European Union under the ILIAS project (Contract
No. RII3-CT-2004-506222) and an RT Network
(Contract No. MRTN-CT-2004-503369), and by the
Spanish Grant No. FPA2005-01269. A. E.-P. is supported by a FPU grant from the Spanish Government, A. M. by INFN (Italy), and P. S. by the U.S. Department of Energy and by NASA Grant No. NAG5-10842. Fermilab is operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States
Department of Energy.
Peer reviewed
2009-03-31T07:21:01Z
2009-03-31T07:21:01Z
2008-10-16
artículo
http://purl.org/coar/resource_type/c_6501
Physical Review D 78(8): 085012 (2008)
0556-2821
http://hdl.handle.net/10261/11952
10.1103/PhysRevD.78.085012
en
http://dx.doi.org/10.1103/PhysRevD.78.085012
open
227404 bytes
application/pdf