Difference between revisions of "UMICH-2015: Neutrino and Light Relativisic Species break-out session 2"

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[[UMICH-2015: Neutrino and Light Relativisic Species|Return to Neutrino and Light Relativisic Species sessions page]]
 
[[UMICH-2015: Neutrino and Light Relativisic Species|Return to Neutrino and Light Relativisic Species sessions page]]
  
''Clear science target is measuring Mnu to 3\sigma with minimum mass case of ~0.058eV.''
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'''Clear science target is measuring Mnu to 3\sigma with minimum mass case of ~0.058eV.'''
  
 
Main observable: CMB lensing. Other observables: SZ cluster abundance, . . .  
 
Main observable: CMB lensing. Other observables: SZ cluster abundance, . . .  
  
From 1402.4108 and 1309.5383 S4 can’t detect Mnu = 0.058 eV without external datasets (BAO, galaxy clustering. . . ).  But with external datasets (DESI) S4 forecasted to get 3-4\sigma detection. NB: DESI + Planck forecasted to reach this already.  
+
From 1402.4108 and 1309.5383 S4 can’t detect Mnu = 0.058 eV without external datasets (BAO, galaxy clustering. . . ).   
 +
But with external datasets (DESI) S4 forecasted to get 3-4\sigma detection. ''NB: DESI + Planck forecasted to reach this already.''
  
''What is needed to be certain that neutrino mass can be detected at high significance?''  
+
'''What is needed to be certain that neutrino mass can be detected at high significance?'''  
  
 
*How large are theoretical uncertainties in modeling nonlinear evolution and baryonic effects on P(k)?  
 
*How large are theoretical uncertainties in modeling nonlinear evolution and baryonic effects on P(k)?  
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*How well do astrophysical foregrounds or other systematics in measuring C_{\Phi\Phi} need to be controlled?
 
*How well do astrophysical foregrounds or other systematics in measuring C_{\Phi\Phi} need to be controlled?
  
''Optimistic thoughts:''
+
'''Optimistic thoughts:'''
  
 
*With S4 + external datasets can we measure more than just Mnu? (i.e. any info on individual masses, or other cross-checks of standard CnuB?)
 
*With S4 + external datasets can we measure more than just Mnu? (i.e. any info on individual masses, or other cross-checks of standard CnuB?)

Revision as of 16:12, 17 September 2015

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Return to Neutrino and Light Relativisic Species sessions page

Clear science target is measuring Mnu to 3\sigma with minimum mass case of ~0.058eV.

Main observable: CMB lensing. Other observables: SZ cluster abundance, . . .

From 1402.4108 and 1309.5383 S4 can’t detect Mnu = 0.058 eV without external datasets (BAO, galaxy clustering. . . ). But with external datasets (DESI) S4 forecasted to get 3-4\sigma detection. NB: DESI + Planck forecasted to reach this already.

What is needed to be certain that neutrino mass can be detected at high significance?

  • How large are theoretical uncertainties in modeling nonlinear evolution and baryonic effects on P(k)?
  • Degeneracies with inflationary parameters? Degeneracies with dark energy?
  • What sensitivity, resolution, sky coverage is needed? (1402.4108 says > 10^5 detectors, fsky > 0.25, \approx 1 muK-arcmin and not very sensitive to resolution for beam size < 4’ — are these numbers stable to theoretical & astrophysical uncertainties?)
  • How well do astrophysical foregrounds or other systematics in measuring C_{\Phi\Phi} need to be controlled?

Optimistic thoughts:

  • With S4 + external datasets can we measure more than just Mnu? (i.e. any info on individual masses, or other cross-checks of standard CnuB?)