We investigate the cosmological implications of the latest growth of structure measurement from the Baryon Oscillation Spectroscopic Survey ( BOSS ) CMASS Data Release 11 with particular focus on the sum of the neutrino masses , \sum m _ { \nu } .
We examine the robustness of the cosmological constraints from the Baryon Acoustic Oscillation ( BAO ) scale , the Alcock-Paczynski effect and redshift-space distortions ( D _ { V } / r _ { s } , F _ { AP } , f \sigma _ { 8 } ) of Beutler et al .
( 18 ) , when introducing a neutrino mass in the power spectrum template .
We then discuss how the neutrino mass relaxes discrepancies between the Cosmic Microwave Background ( CMB ) and other low-redshift measurements within \Lambda CDM .
Combining our cosmological constraints with WMAP9 yields \sum m _ { \nu } = 0.36 \pm 0.14 eV ( 68 \% c.l .
) , which represents a 2.6 \sigma preference for non-zero neutrino mass .
The significance can be increased to 3.3 \sigma when including weak lensing results and other BAO constraints , yielding \sum m _ { \nu } = 0.35 \pm 0.10 eV ( 68 \% c.l . ) .
However , combining CMASS with Planck data reduces the preference for neutrino mass to \sim 2 \sigma .
When removing the CMB lensing effect in the Planck temperature power spectrum ( by marginalising over A _ { L } ) , we see shifts of \sim 1 \sigma in \sigma _ { 8 } and \Omega _ { m } , which have a significant effect on the neutrino mass constraints .
In case of CMASS plus Planck without the A _ { L } -lensing signal , we find a preference for a neutrino mass of \sum m _ { \nu } = 0.34 \pm 0.14 eV ( 68 \% c.l .
) , in excellent agreement with the WMAP9+CMASS value .
The constraint can be tightened to 3.4 \sigma yielding \sum m _ { \nu } = 0.36 \pm 0.10 eV ( 68 \% c.l . )
when weak lensing data and other BAO constraints are included .