Cover Image

Cosmological implications of DESI DR2 BAO measurements in light of the latest ACT DR6 CMB data

Fuente: arXiv

Saved in:

Bibliographic Details
Main Authors:	Garcia-Quintero, C., Noriega, H. E., de Mattia, A., Aviles, A., Lodha, K., Chebat, D., Rohlf, J., Nadathur, S., Elbers, W., Aguilar, J., Ahlen, S., Alves, O., Andrade, U., Bailey, S., BenZvi, S., Bianchi, D., Brooks, D., Burtin, E., Calderon, R., Rosell, A. Carnero, Carrilho, P., Castander, F. J., Chaussidon, E., Claybaugh, T., Cole, S., Cuceu, A., de Belsunce, R., de la Macorra, A., Deiosso, N., Della Costa, J., Dey, Arjun, Dey, Biprateep, Ding, Z., Doel, P., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gutierrez, G., Guy, J., Hahn, C., Herrera-Alcantar, H. K., Honscheid, K., Howlett, C., Huterer, D., Ishak, M., Juneau, S., Kehoe, R., Kirkby, D., Kremin, A., Lahav, O., Lamman, C., Landriau, M., Guillou, L. Le, Leauthaud, A., Levi, M. E., Li, Q., Manera, M., Martini, P., Matthewson, W. L., Meisner, A., Mena-Fernández, J., Miquel, R., Moustakas, J., Muñoz-Gutiérrez, A., Newman, J. A., Niz, G., Paillas, E., Palanque-Delabrouille, N., Pan, J., Percival, W. J., Prada, F., Pérez-Ràfols, I., Rashkovetskyi, M., Ravoux, C., Ross, A. J., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H., Shafieloo, A., Silber, J., Sprayberry, D., Tarlé, G., Taylor, P., Vargas-Magaña, M., Walther, M., Weaver, B. A., Yèche, C., Zarrouk, P., Zhai, Z., Zhao, C., Zhou, R.
Format:	Preprint
Published:	2025
Subjects:	Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

_version_	1866915266578874368
author	Garcia-Quintero, C. Noriega, H. E. de Mattia, A. Aviles, A. Lodha, K. Chebat, D. Rohlf, J. Nadathur, S. Elbers, W. Aguilar, J. Ahlen, S. Alves, O. Andrade, U. Bailey, S. BenZvi, S. Bianchi, D. Brooks, D. Burtin, E. Calderon, R. Rosell, A. Carnero Carrilho, P. Castander, F. J. Chaussidon, E. Claybaugh, T. Cole, S. Cuceu, A. de Belsunce, R. de la Macorra, A. Deiosso, N. Della Costa, J. Dey, Arjun Dey, Biprateep Ding, Z. Doel, P. Font-Ribera, A. Forero-Romero, J. E. Gaztañaga, E. Gil-Marín, H. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hahn, C. Herrera-Alcantar, H. K. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Juneau, S. Kehoe, R. Kirkby, D. Kremin, A. Lahav, O. Lamman, C. Landriau, M. Guillou, L. Le Leauthaud, A. Levi, M. E. Li, Q. Manera, M. Martini, P. Matthewson, W. L. Meisner, A. Mena-Fernández, J. Miquel, R. Moustakas, J. Muñoz-Gutiérrez, A. Newman, J. A. Niz, G. Paillas, E. Palanque-Delabrouille, N. Pan, J. Percival, W. J. Prada, F. Pérez-Ràfols, I. Rashkovetskyi, M. Ravoux, C. Ross, A. J. Rossi, G. Sanchez, E. Schlegel, D. Schubnell, M. Seo, H. Shafieloo, A. Silber, J. Sprayberry, D. Tarlé, G. Taylor, P. Vargas-Magaña, M. Walther, M. Weaver, B. A. Yèche, C. Zarrouk, P. Zhai, Z. Zhao, C. Zhou, R.
author_facet	Garcia-Quintero, C. Noriega, H. E. de Mattia, A. Aviles, A. Lodha, K. Chebat, D. Rohlf, J. Nadathur, S. Elbers, W. Aguilar, J. Ahlen, S. Alves, O. Andrade, U. Bailey, S. BenZvi, S. Bianchi, D. Brooks, D. Burtin, E. Calderon, R. Rosell, A. Carnero Carrilho, P. Castander, F. J. Chaussidon, E. Claybaugh, T. Cole, S. Cuceu, A. de Belsunce, R. de la Macorra, A. Deiosso, N. Della Costa, J. Dey, Arjun Dey, Biprateep Ding, Z. Doel, P. Font-Ribera, A. Forero-Romero, J. E. Gaztañaga, E. Gil-Marín, H. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hahn, C. Herrera-Alcantar, H. K. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Juneau, S. Kehoe, R. Kirkby, D. Kremin, A. Lahav, O. Lamman, C. Landriau, M. Guillou, L. Le Leauthaud, A. Levi, M. E. Li, Q. Manera, M. Martini, P. Matthewson, W. L. Meisner, A. Mena-Fernández, J. Miquel, R. Moustakas, J. Muñoz-Gutiérrez, A. Newman, J. A. Niz, G. Paillas, E. Palanque-Delabrouille, N. Pan, J. Percival, W. J. Prada, F. Pérez-Ràfols, I. Rashkovetskyi, M. Ravoux, C. Ross, A. J. Rossi, G. Sanchez, E. Schlegel, D. Schubnell, M. Seo, H. Shafieloo, A. Silber, J. Sprayberry, D. Tarlé, G. Taylor, P. Vargas-Magaña, M. Walther, M. Weaver, B. A. Yèche, C. Zarrouk, P. Zhai, Z. Zhao, C. Zhou, R.
contents	We report cosmological results from the Dark Energy Spectroscopic Instrument (DESI) measurements of baryon acoustic oscillations (BAO) when combined with recent data from the Atacama Cosmology Telescope (ACT). By jointly analyzing ACT and Planck data and applying conservative cuts to overlapping multipole ranges, we assess how different Planck+ACT dataset combinations affect consistency with DESI. While ACT alone exhibits a tension with DESI exceeding 3$σ$ within the $Λ$CDM model, this discrepancy is reduced when ACT is analyzed in combination with Planck. For our baseline DESI DR2 BAO+Planck PR4+ACT likelihood combination, the preference for evolving dark energy over a cosmological constant is about 3$σ$, increasing to over 4$σ$ with the inclusion of Type Ia supernova data. While the dark energy results remain quite consistent across various combinations of Planck and ACT likelihoods with those obtained by the DESI collaboration, the constraints on neutrino mass are more sensitive, ranging from $\sum m_ν< 0.061$ eV in our baseline analysis, to $\sum m_ν< 0.077$ eV (95\% confidence level) in the CMB likelihood combination chosen by ACT when imposing the physical prior $\sum m_ν>0$ eV.
format	Preprint
id	arxiv_https___arxiv_org_abs_2504_18464
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Cosmological implications of DESI DR2 BAO measurements in light of the latest ACT DR6 CMB data Garcia-Quintero, C. Noriega, H. E. de Mattia, A. Aviles, A. Lodha, K. Chebat, D. Rohlf, J. Nadathur, S. Elbers, W. Aguilar, J. Ahlen, S. Alves, O. Andrade, U. Bailey, S. BenZvi, S. Bianchi, D. Brooks, D. Burtin, E. Calderon, R. Rosell, A. Carnero Carrilho, P. Castander, F. J. Chaussidon, E. Claybaugh, T. Cole, S. Cuceu, A. de Belsunce, R. de la Macorra, A. Deiosso, N. Della Costa, J. Dey, Arjun Dey, Biprateep Ding, Z. Doel, P. Font-Ribera, A. Forero-Romero, J. E. Gaztañaga, E. Gil-Marín, H. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hahn, C. Herrera-Alcantar, H. K. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Juneau, S. Kehoe, R. Kirkby, D. Kremin, A. Lahav, O. Lamman, C. Landriau, M. Guillou, L. Le Leauthaud, A. Levi, M. E. Li, Q. Manera, M. Martini, P. Matthewson, W. L. Meisner, A. Mena-Fernández, J. Miquel, R. Moustakas, J. Muñoz-Gutiérrez, A. Newman, J. A. Niz, G. Paillas, E. Palanque-Delabrouille, N. Pan, J. Percival, W. J. Prada, F. Pérez-Ràfols, I. Rashkovetskyi, M. Ravoux, C. Ross, A. J. Rossi, G. Sanchez, E. Schlegel, D. Schubnell, M. Seo, H. Shafieloo, A. Silber, J. Sprayberry, D. Tarlé, G. Taylor, P. Vargas-Magaña, M. Walther, M. Weaver, B. A. Yèche, C. Zarrouk, P. Zhai, Z. Zhao, C. Zhou, R. Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology We report cosmological results from the Dark Energy Spectroscopic Instrument (DESI) measurements of baryon acoustic oscillations (BAO) when combined with recent data from the Atacama Cosmology Telescope (ACT). By jointly analyzing ACT and Planck data and applying conservative cuts to overlapping multipole ranges, we assess how different Planck+ACT dataset combinations affect consistency with DESI. While ACT alone exhibits a tension with DESI exceeding 3$σ$ within the $Λ$CDM model, this discrepancy is reduced when ACT is analyzed in combination with Planck. For our baseline DESI DR2 BAO+Planck PR4+ACT likelihood combination, the preference for evolving dark energy over a cosmological constant is about 3$σ$, increasing to over 4$σ$ with the inclusion of Type Ia supernova data. While the dark energy results remain quite consistent across various combinations of Planck and ACT likelihoods with those obtained by the DESI collaboration, the constraints on neutrino mass are more sensitive, ranging from $\sum m_ν< 0.061$ eV in our baseline analysis, to $\sum m_ν< 0.077$ eV (95\% confidence level) in the CMB likelihood combination chosen by ACT when imposing the physical prior $\sum m_ν>0$ eV.
title	Cosmological implications of DESI DR2 BAO measurements in light of the latest ACT DR6 CMB data
topic	Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
url	https://arxiv.org/abs/2504.18464