[DUSELScience] NOvA Results

[Marvin Marshak]

To: People Interested in Underground Science

In a special seminar today at Fermilab, the MINOS Collaboration
will present its first neutrino beam data on measuring the parameters
for neutrino oscillations. For 0.93 x 10^20 protons on target, the MINOS
parameter measurements are

Delta m23 squared = [3.05+0.60-0.55 (statistical) ±0.12  
(systematic) ] x 10^-3

Sin^2 2 theta23 = 0.88+0.12-0.15 (statistical) ± 0.06 (systematic)

We believe that these results are interesting and important to the  
development
of plans for underground science in the United States. In particular,
MINOS's measurement of Delta m23 squared near the high end of the
Super-K range suggests that the existing NuMI beam is likely more  
valuable
for future neutrino studies than may have been thought previously. The
cost of a new beam to another location is about $200-400 million, which
is comparable to and might well exceed the cost of an underground  
laboratory.
We would appreciate hearing your comments and suggestions about
what role the Soudan Underground Laboratory might have in future use
of the NuMI beam, particularly beginning 8-10 years from now after the
NOvA Detector has completed collecting a substantial amount of data.

Best regards,

Earl Peterson
Marvin Marshak


Marvin L. Marshak
Institute of Technology Professor
Morse-Alumni Professor
University of Minnesota
116 Church Street SE
Minneapolis MN 55455  612-624-1312  612-624-4578 (fax)

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