TY  - JOUR
TI  - CMB lensing and Ly? forest cross bispectrum from DESI's first-year quasar sample
UR  - http://dx.doi.org/10.1103/physrevd.110.063505
JF  - Physical Review D
AV  - public
ID  - discovery10197273
N1  - This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions.
PB  - American Physical Society (APS)
VL  - 110
Y1  - 2024/09/15/
A1  - Karacayll, NG
A1  - Martini, P
A1  - Weinberg, DH
A1  - Ferraro, S
A1  - De Belsunce, R
A1  - Aguilar, J
A1  - Ahlen, S
A1  - Armengaud, E
A1  - Brooks, D
A1  - Claybaugh, T
A1  - De La Macorra, A
A1  - Dey, B
A1  - Doel, P
A1  - Fanning, K
A1  - Forero-Romero, JE
A1  - Gontcho, SGA
A1  - Gonzalez-Morales, AX
A1  - Gutierrez, G
A1  - Guy, J
A1  - Honscheid, K
A1  - Kirkby, D
A1  - Kisner, T
A1  - Kremin, A
A1  - Lambert, A
A1  - Landriau, M
A1  - Le Guillou, L
A1  - Levi, ME
A1  - Manera, M
A1  - Meisner, A
A1  - Miquel, R
A1  - Mueller, E
A1  - Munoz-Gutiérrez, A
A1  - Myers, AD
A1  - Newman, JA
A1  - Nie, J
A1  - Niz, G
A1  - Palanque-Delabrouille, N
A1  - Percival, WJ
A1  - Poppett, C
A1  - Prada, F
A1  - Ravoux, C
A1  - Rezaie, M
A1  - Ross, AJ
A1  - Rossi, G
A1  - Sanchez, E
A1  - Schlafly, EF
A1  - Schlegel, D
A1  - Seo, H
A1  - Sprayberry, D
A1  - Tan, T
A1  - Tarlé, G
A1  - Weaver, BA
A1  - Zou, H
N2  - The squeezed cross-bispectrum B?,Ly? between the gravitational lensing in the cosmic microwave background and the 1D Ly? forest power spectrum can constrain bias parameters and break degeneracies between ?8 and other cosmological parameters. We detect B?,Ly? with 4.8? significance at an effective redshift zeff=2.4 using Planck PR3 lensing map and over 280,000 quasar spectra from the Dark Energy Spectroscopic Instrument's first-year data. We test our measurement against metal contamination and foregrounds such as Galactic extinction and clusters of galaxies by deprojecting the thermal Sunyaev-Zeldovich effect. We compare our results to a tree-level perturbation theory calculation and find reasonable agreement between the model and measurement.
IS  - 6
ER  -