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Title: Detection of Baryon Acoustic Oscillation features in the large-scale 3-point correlation function of SDSS BOSS DR12 CMASS galaxies

We present the large-scale 3-point correlation function (3PCF) of the SDSS DR12 CMASS sample of 777,202 Luminous Red Galaxies, the largest-ever sample used for a 3PCF or bispectrum measurement. We make the first high-significance (4.5σ) detection of Baryon Acoustic Oscillations (BAO) in the 3PCF. Using these acoustic features in the 3PCF as a standard ruler, we measure the distance to z=0.57 to 1.7% precision (statistical plus systematic). We find D V = 2024 ± 29Mpc (stat) ± 20Mpc(sys) for our fiducial cosmology (consistent with Planck 2015) and bias model. This measurement extends the use of the BAO technique from the 2-point correlation function (2PCF) and power spectrum to the 3PCF and opens an avenue for deriving additional cosmological distance information from future large-scale structure redshift surveys such as DESI. Our measured distance scale from the 3PCF is fairly independent from that derived from the pre-reconstruction 2PCF and is equivalent to increasing the length of BOSS by roughly 10%; reconstruction appears to lower the independence of the distance measurements. In conclusion, fitting a model including tidal tensor bias yields a moderate significance (2.6σ) detection of this bias with a value in agreement with the prediction from local Lagrangian biasing.
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [6] ; ;  [7] ;  [8] ;  [9] ;  [10] ;  [11]
  1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Univ. of Utah, Salt Lake City, UT (United States)
  4. Univ. Autonoma de Madrid, Madrid (Spain); Leibniz-Institut fur Astrophysik Potsdam (AIP), Potsdam (Germany)
  5. Sorbonne Univ. Paris (France); Univ. Pierre et Marie Curie, Paris (France)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of California, Berkeley, CA (United States)
  7. Univ. of Portsmouth, Portsmouth (United Kingdom)
  8. The Ohio State Univ., Columbus, OH (United States)
  9. Sejong Univ., Seoul (Korea)
  10. Ohio Univ., Athens, OH (United States)
  11. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Fisica
Publication Date:
Report Number(s):
Journal ID: ISSN 0035-8711; KA2301020
Grant/Contract Number:
AC02-05CH11231; SC0012704; DGE-1144152; SC0013718; ST/M001709/1; ST/N000668/1; ST/N00180X/1; 614030
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 469; Journal Issue: 2; Journal ID: ISSN 0035-8711
Royal Astronomical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF); National Research Foundation of Korea (NRF)
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS; cosmology observations; distance scale; large-scale structure of Universe
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1425418