%0 Generic %1 collaboration2021bicep %A Collaboration, BICEP/Keck %A :, %A Ade, P. A. R. %A Ahmed, Z. %A Amiri, M. %A Barkats, D. %A Thakur, R. Basu %A Bischoff, C. A. %A Beck, D. %A Bock, J. J. %A Boenish, H. %A Bullock, E. %A Buza, V. %A Cheshire IV, J. R. %A Connors, J. %A Cornelison, J. %A Crumrine, M. %A Cukierman, A. %A Denison, E. V. %A Dierickx, M. %A Duband, L. %A Eiben, M. %A Fatigoni, S. %A Filippini, J. P. %A Fliescher, S. %A Goeckner-Wald, N. %A Goldfinger, D. C. %A Grayson, J. %A Grimes, P. %A Hall, G. %A Halal, G. %A Halpern, M. %A Hand, E. %A Harrison, S. %A Henderson, S. %A Hildebrandt, S. R. %A Hilton, G. C. %A Hubmayr, J. %A Hui, H. %A Irwin, K. D. %A Kang, J. %A Karkare, K. S. %A Karpel, E. %A Kefeli, S. %A Kernasovskiy, S. A. %A Kovac, J. M. %A Kuo, C. L. %A Lau, K. %A Leitch, E. M. %A Lennox, A. %A Megerian, K. G. %A Minutolo, L. %A Moncelsi, L. %A Nakato, Y. %A Namikawa, T. %A Nguyen, H. T. %A O'Brient, R. %A Ogburn IV, R. W. %A Palladino, S. %A Prouve, T. %A Pryke, C. %A Racine, B. %A Reintsema, C. D. %A Richter, S. %A Schillaci, A. %A Schwarz, R. %A Schmitt, B. L. %A Sheehy, C. D. %A Soliman, A. %A Germaine, T. St. %A Steinbach, B. %A Sudiwala, R. V. %A Teply, G. P. %A Thompson, K. L. %A Tolan, J. E. %A Tucker, C. %A Turner, A. D. %A Umilta, C. %A Verges, C. %A Vieregg, A. G. %A Wandui, A. %A Weber, A. C. %A Wiebe, D. V. %A Willmert, J. %A Wong, C. L. %A Wu, W. L. K. %A Yang, H. %A Yoon, K. W. %A Young, E. %A Yu, C. %A Zeng, L. %A Zhang, C. %A Zhang, S. %D 2021 %K library %T BICEP / Keck XIV: Improved constraints on axion-like polarization oscillations in the cosmic microwave background %U http://arxiv.org/abs/2108.03316 %X We present an improved search for axion-like polarization oscillations in the cosmic microwave background (CMB) with observations from the Keck Array. An all-sky, temporally sinusoidal rotation of CMB polarization, equivalent to a time-variable cosmic birefringence, is an observable manifestation of a local axion field and potentially allows a CMB polarimeter to detect axion-like dark matter directly. We describe improvements to the method presented in previous work, and we demonstrate the updated method with an expanded dataset consisting of the 2012-2015 observing seasons. We set limits on the axion-photon coupling constant for mass $m$ in the range $10^-23$-$10^-18~eV$, which corresponds to oscillation periods on the order of hours to years. Our results are consistent with the background model. For periods between $1$ and $30~d$ ($1.6 10^-21 m 4.8 \times 10^-20~eV$), the $95\%$-confidence upper limits on rotation amplitude are approximately constant with a median of $0.27^\circ$, which constrains the axion-photon coupling constant to $g_\phi\gamma < (4.5 \times 10^-12~GeV^-1) m/(10^-21~eV$), if axion-like particles constitute all of the dark matter. More than half of the collected BICEP dataset has yet to be analyzed, and several current and future CMB polarimetry experiments can apply the methods presented here to achieve comparable or superior constraints. In the coming years, oscillation measurements can achieve the sensitivity to rule out unexplored regions of the axion parameter space.

@misc{collaboration2021bicep, abstract = {We present an improved search for axion-like polarization oscillations in the cosmic microwave background (CMB) with observations from the Keck Array. An all-sky, temporally sinusoidal rotation of CMB polarization, equivalent to a time-variable cosmic birefringence, is an observable manifestation of a local axion field and potentially allows a CMB polarimeter to detect axion-like dark matter directly. We describe improvements to the method presented in previous work, and we demonstrate the updated method with an expanded dataset consisting of the 2012-2015 observing seasons. We set limits on the axion-photon coupling constant for mass $m$ in the range $10^{-23}$-$10^{-18}~\mathrm{eV}$, which corresponds to oscillation periods on the order of hours to years. Our results are consistent with the background model. For periods between $1$ and $30~\mathrm{d}$ ($1.6 \times 10^{-21} \leq m \leq 4.8 \times 10^{-20}~\mathrm{eV}$), the $95\%$-confidence upper limits on rotation amplitude are approximately constant with a median of $0.27^\circ$, which constrains the axion-photon coupling constant to $g_{\phi\gamma} < (4.5 \times 10^{-12}~\mathrm{GeV}^{-1}) m/(10^{-21}~\mathrm{eV}$), if axion-like particles constitute all of the dark matter. More than half of the collected BICEP dataset has yet to be analyzed, and several current and future CMB polarimetry experiments can apply the methods presented here to achieve comparable or superior constraints. In the coming years, oscillation measurements can achieve the sensitivity to rule out unexplored regions of the axion parameter space.}, added-at = {2021-08-10T08:33:10.000+0200}, author = {Collaboration, BICEP/Keck and : and Ade, P. A. R. and Ahmed, Z. and Amiri, M. and Barkats, D. and Thakur, R. Basu and Bischoff, C. A. and Beck, D. and Bock, J. J. and Boenish, H. and Bullock, E. and Buza, V. and Cheshire IV, J. R. and Connors, J. and Cornelison, J. and Crumrine, M. and Cukierman, A. and Denison, E. V. and Dierickx, M. and Duband, L. and Eiben, M. and Fatigoni, S. and Filippini, J. P. and Fliescher, S. and Goeckner-Wald, N. and Goldfinger, D. C. and Grayson, J. and Grimes, P. and Hall, G. and Halal, G. and Halpern, M. and Hand, E. and Harrison, S. and Henderson, S. and Hildebrandt, S. R. and Hilton, G. C. and Hubmayr, J. and Hui, H. and Irwin, K. D. and Kang, J. and Karkare, K. S. and Karpel, E. and Kefeli, S. and Kernasovskiy, S. A. and Kovac, J. M. and Kuo, C. L. and Lau, K. and Leitch, E. M. and Lennox, A. and Megerian, K. G. and Minutolo, L. and Moncelsi, L. and Nakato, Y. and Namikawa, T. and Nguyen, H. T. and O'Brient, R. and Ogburn IV, R. W. and Palladino, S. and Prouve, T. and Pryke, C. and Racine, B. and Reintsema, C. D. and Richter, S. and Schillaci, A. and Schwarz, R. and Schmitt, B. L. and Sheehy, C. D. and Soliman, A. and Germaine, T. St. and Steinbach, B. and Sudiwala, R. V. and Teply, G. P. and Thompson, K. L. and Tolan, J. E. and Tucker, C. and Turner, A. D. and Umilta, C. and Verges, C. and Vieregg, A. G. and Wandui, A. and Weber, A. C. and Wiebe, D. V. and Willmert, J. and Wong, C. L. and Wu, W. L. K. and Yang, H. and Yoon, K. W. and Young, E. and Yu, C. and Zeng, L. and Zhang, C. and Zhang, S.}, biburl = {https://www.bibsonomy.org/bibtex/22037b4580bfb618b59d03d40191ca84e/gpkulkarni}, description = {BICEP / Keck XIV: Improved constraints on axion-like polarization oscillations in the cosmic microwave background}, interhash = {e3265ea97461110a9bf23ef73c2638e8}, intrahash = {2037b4580bfb618b59d03d40191ca84e}, keywords = {library}, note = {cite arxiv:2108.03316Comment: 14 pages, 3 figures}, timestamp = {2021-08-10T08:33:10.000+0200}, title = {BICEP / Keck XIV: Improved constraints on axion-like polarization oscillations in the cosmic microwave background}, url = {http://arxiv.org/abs/2108.03316}, year = 2021 }