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Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum from Two Years of POLARBEAR Data

We present a measurement of the gravitational lensing deflection power spectrum reconstructed with two seasons cosmic microwave background polarization data from the POLARBEAR experiment. Observations were taken at 150 GHz from 2012 to 2014 which survey three patches of sky totaling 30 square degrees. We test the consistency of the lensing spectrum with a Cold Dark Matter (CDM) cosmology and reject the no-lensing hypothesis at a confidence of 10.9 sigma including statistical and systematic uncertainties. We observe a value of A_L = 1.33 +/- 0.32 (statistical) +/- 0.02 (systematic) +/- 0.07 (foreground) using all polarization lensing estimators, which corresponds to a 24% accurate measurement of the lensing amplitude. Compared to the analysis of the first year data, we have improved the breadth of both the suite of null tests and the error terms included in the estimation of systematic contamination.

preprint2020arXivOpen access
Mario Aguilar FaúndezKam ArnoldCarlo BaccigalupiDarcy BarronDominic BeckShawn BeckmanFederico BianchiniJulien CarronKolen CheungYuji ChinoneHamza El BouharganiTucker ElleflotJosquin ErrardGiulio FabbianChang FengTakuro FujinoNeil Goeckner-WaldTakaho HamadaMasaya HasegawaMasashi HazumiCharles A. HillHaruaki HiroseOliver JeongNobuhiko KatayamaBrian KeatingShuhei KikuchiAkito KusakaAdrian T. LeeDavid LeonEric LinderLindsay Ng LowryFrederick MatsudaTomotake MatsumuraYuto MinamiMartin NavaroliHaruki NishinoAnh Thi Phuong PhamDavide PolettiGiuseppe PuglisiChristian L ReichardtYuuko SegawaBlake D SherwinMaximiliano Silva-FeaverPraween SiritanasakRadek StomporAritoki SuzukiOsamu TajimaSayuri TakatoriDaiki TanabeGrant P. TeplyCalvin Tsai
astro-ph.CO
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Mario Aguilar FaúndezKam ArnoldCarlo BaccigalupiDarcy BarronDominic BeckShawn BeckmanFederico BianchiniJulien CarronKolen CheungYuji ChinoneHamza El BouharganiTucker ElleflotJosquin ErrardGiulio FabbianChang FengTakuro FujinoNeil Goeckner-WaldTakaho HamadaMasaya HasegawaMasashi HazumiCharles A. HillHaruaki HiroseOliver JeongNobuhiko KatayamaBrian KeatingShuhei KikuchiAkito KusakaAdrian T. LeeDavid LeonEric LinderLindsay Ng LowryFrederick MatsudaTomotake MatsumuraYuto MinamiMartin NavaroliHaruki NishinoAnh Thi Phuong PhamDavide PolettiGiuseppe PuglisiChristian L ReichardtYuuko SegawaBlake D SherwinMaximiliano Silva-FeaverPraween SiritanasakRadek StomporAritoki SuzukiOsamu TajimaSayuri TakatoriDaiki TanabeGrant P. TeplyCalvin Tsai

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