Bulletin of the American Physical Society
2008 APS April Meeting and HEDP/HEDLA Meeting
Volume 53, Number 5
Friday–Tuesday, April 11–15, 2008; St. Louis, Missouri
Session J2: Joint Session on Neutrinos |
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Sponsoring Units: DNP DPF Chair: Kevin Lesko, University of California, Berkeley Room: Hyatt Regency St. Louis Riverfront (formerly Adam's Mark Hotel), St. Louis D |
Sunday, April 13, 2008 10:45AM - 11:21AM |
J2.00001: Recent Progress in Neutrinoless Double Beta Decay: Its Forecast for the Future Invited Speaker: At least one neutrino has a mass of about 50 meV or larger. However, the absolute mass scale for the neutrino is unknown. Furthermore, the critical question: Is the neutrino its own antiparticle? remains unanswered. Studies of double beta decay offer hope for determining the absolute mass scale. In particular, zero-neutrino double beta decay ($\beta\beta(0\nu)$) can address the issues of lepton number conservation, the particle-antiparticle nature of the neutrino, and its mass. Recent experimental results have demonstrated the increasing reach of the technologies used to search for ($\beta\beta(0\nu)$. In addition, theoretical progress in understanding the nuclear physics involved has also been impressive. All indications are that upcoming generations of ($\beta\beta(0\nu)$ experiments will be sensitive to neutrino masses in the exciting range below 50 meV. A summary of the recent results in ($\beta\beta(0\nu)$ will be discussed in the context of the future ($\beta\beta(0\nu)$ program. [Preview Abstract] |
Sunday, April 13, 2008 11:21AM - 11:57AM |
J2.00002: Sunshine: Photons or Neutrinos -- which tells us more? Invited Speaker: Tremendous progress over the past decade puts us within striking distance of finally being able to accurately measure the luminosity of the Sun using neutrinos and only the most basic assumptions from the Standard Solar Model. Along the way we have learned a lot about neutrinos themselves, and they have proven to be very interesting indeed. While photons probe the Sun's surface and can be used with helioseismology to probe quite deep, neutrinos tell us about the Sun's interior. Do these match? Our most fundamental understanding of stellar evolution and neutrino oscillations are uniquely testable by this comparison. The recent results of Borexino, coupled with results from SNO and KamLAND and new solar metalicity studies are starting to bear fruit and point towards the next steps which could well lead to even more surprises. [Preview Abstract] |
Sunday, April 13, 2008 11:57AM - 12:33PM |
J2.00003: Results from MiniBooNE and MINOS Invited Speaker: Fermi National Accelerator Laboratory has an active neutrino program with MiniBooNE, MINOS and SciBooNE experiments presently taking data. All three experiments utilize high intensity accelerator-based neutrino beams. MiniBooNE has recently published a measurement of the $\nu_\mu \rightarrow \nu_e$ appearance rate which is consistent with no oscillations in the accessible region of $\Delta m^{2}$ and $sin^{2}(2\theta)$ parameter space. MiniBooNE has also measured charged current $\nu_{\mu}$ quasi-elastic scattering parameters in the 1 GeV energy region. MINOS is a two detector long-baseline neutrino experiment designed to study oscillation phenomena using $\nu_{\mu}$ beam. MINOS has measured the $\nu_{\mu}$ disappearance rate for the atmospheric mass splitting $\Delta m^{2}_{atm}$. MINOS also actively pursues analyzes of far detector events searching for $\nu_{\mu} \rightarrow \nu_{e}$ appearance and for disappearance of $\nu_{\mu}$ into sterile neutrinos. This presentation will focus on latest results from the MiniBooNE and MINOS collaborations and provide an analysis update for future measurements. [Preview Abstract] |
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