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APS » Journals » Phys. Rev. Lett. » Volume 90 » Issue 13
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Phys. Rev. Lett. 90, 131301 (2003) [4 pages]

Does the Sun Shine by pp or CNO Fusion Reactions?

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John N. Bahcall*
School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540

M. C. Gonzalez-Garcia†
Theory Division, CERN, CH-1211, Geneva 23, Switzerland
Y.I.T.P., SUNY at Stony Brook, Stony Brook, New York 11794-3840
IFIC, Universitat de València–C.S.I.C., Apartat 22085, 46071 València, Spain

Carlos Peña-Garay‡
School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540

Received 23 December 2002; published 2 April 2003

We show that solar neutrino experiments set an upper limit of 7.8% (7.3% including the recent KamLAND measurements) to the fraction of energy that the Sun produces via the CNO fusion cycle, which is an order of magnitude improvement upon the previous limit. New experiments are required to detect CNO neutrinos corresponding to the 1.5% of the solar luminosity that the standard solar model predicts is generated by the CNO cycle.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.131301
DOI:
10.1103/PhysRevLett.90.131301
PACS:
26.65.+t, 14.60.Pq

*Email address: jnb@ias.edu

†Email address: concepcion.gonzalez-garcia@cern.ch

‡Email address: penya@ias.edu

 
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