- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review C

Export citation

Export citation

Choose format for download:

Download Citation
  • Rapid Communication
  • Access by Xinjiang University

Chiral effective field theory calculations of neutrino processes in dense matter

S. Bacca1,*, K. Hally1,2,†, C. J. Pethick3,4,‡, and A. Schwenk1,§

  • 1TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3, Canada
  • 2Acadia University, Department of Physics, P. O. Box 49, Wolfville, Nova Scotia, B4P 2R6, Canada
  • 3The Niels Bohr International Academy, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark
  • 4NORDITA, Roslagstullsbacken 21, 10691 Stockholm, Sweden

PDF

Phys. Rev. C 80, 032802(R) – Published 23 September, 2009

DOI: https://doi.org/10.1103/PhysRevC.80.032802

Abstract

We calculate neutrino processes involving two nucleons at subnuclear densities using chiral effective field theory. Shorter range noncentral forces reduce the neutrino rates significantly compared with the one-pion exchange approximation currently used in supernova simulations. For densities ρ<1014 g cm−3, we find that neutrino rates are well constrained by nuclear interactions and nucleon-nucleon scattering data. As an application, we calculate the mean-square energy transfer in scattering of a neutrino from nucleons and find that collision processes and spin-dependent mean-field effects dominate over the energy transfer due to nucleon recoil.

View figure in article

Article Text

References (22)

  1. G. G. Raffelt, Stars as Laboratories for Fundamental Physics (University of Chicago Press, Chicago, 1996).
  2. H. Suzuki, Numer. Astrophys. Jpn. 2, 267 (1991); in Proceedings of the International Symposium on Neutrino Astrophysics, Frontiers of Neutrino Astrophysics, edited by Y. Suzuki and K. Nakamura (Universal Academy Press, Tokyo, 1993).
  3. H.-T. Janka, W. Keil, G. Raffelt, and D. Seckel, Phys. Rev. Lett. 76, 2621 (1996).
  4. S. Hannestad and G. Raffelt, Astrophys. J. 507, 339 (1998).
  5. T. A. Thompson, A. Burrows, and J. E. Horvath, Phys. Rev. C 62, 035802 (2000).
  6. M. T. Keil, G. Raffelt, and H.-T. Janka, Astrophys. J. 590, 971 (2003).
  7. B. Friman and O. V. Maxwell, Astrophys. J. 232, 541 (1979).
  8. E. Olsson and C. J. Pethick, Phys. Rev. C 66, 065803 (2002).
  9. E. Epelbaum, Prog. Part. Nucl. Phys. 57, 654 (2006).
  10. G. I. Lykasov, C. J. Pethick, and A. Schwenk, Phys. Rev. C 78, 045803 (2008).
  11. N. Iwamoto and C. J. Pethick, Phys. Rev. D 25, 313 (1982).
  12. G. I. Lykasov, E. Olsson, and C. J. Pethick, Phys. Rev. C 72, 025805 (2005).
  13. D. A. Varshalovich, A. N. Moskalev, and V. K. Khersonskii, Quantum Theory of Angular Momentum (World Scientific, Singapore, 1988).
  14. E. Epelbaum, W. Glöckle, and U.-G. Meißner, Nucl. Phys. A747, 362 (2005).
  15. D. R. Entem and R. Machleidt, Phys. Rev. C 68, 041001(R) (2003).
  16. A. Schwenk, B. Friman, and G. E. Brown, Nucl. Phys. A713, 191 (2003).
  17. S. K. Bogner, T. T. S. Kuo, and A. Schwenk, Phys. Rep. 386, 1 (2003); S. K. Bogner, R. J. Furnstahl, S. Ramanan, and A. Schwenk, Nucl. Phys. A784, 79 (2007).
  18. G. E. Brown and A. D. Jackson, The Nucleon-Nucleon Interaction (North-Holland, Amsterdam, 1976).
  19. C. Hanhart, D. R. Philips, and S. Reddy, Phys. Lett. B499, 9 (2001).
  20. L. Tolos, B. Friman, and A. Schwenk, Nucl. Phys. A806, 105 (2008).
  21. A. Schwenk and B. Friman, Phys. Rev. Lett. 92, 082501 (2004); A. Schwenk, P. Jaikumar, and C. Gale, Phys. Lett. B584, 241 (2004).
  22. E. N. E. van Dalen, A. E. L. Dieperink, and J. A. Tjon, Phys. Rev. C 67, 065807 (2003).

Outline

Information

Phys. Rev. C 80, 032802(R)– Published 23 September, 2009
  • Received 2 December 2008

© 2009 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation