_version_ 1866916014900379648
author Brotherton, Daniel C.
Bush, Zachary R.
Croatto, Sandy
Diaz-Ortiz Jr., Mauricio
Egge, Jacob
Ejlli, Aldo
Frädrich, Henry
Gleason, Joe
Grote, Hartmut
Hallal, Ayman
Hartman, Michael T.
Hollis, Harold
Isleif, Katharina-Sophie
James, Alasdair L.
Januschek, Friederike
Karan, Kanioar
Karstensen, Sven
Kozlowski, Todd
Lindner, Axel
Messineo, Giuseppe
Meyer, Manuel
Müller, Guido
Netrval, Ryan
Oceano, Isabella
Othman, Gulden
Põld, Jan H.
Reuther, David
Ringwald, Andreas
Rivasto, Elmeri
Gimeno, José Alejandro Rubiera
Schaffran, Jörn
Schneekloth, Uwe
Schwemmbauer, Christina
Smith, Richard C. G.
Spector, Aaron D.
Tanner, David B.
Trines, Dieter
Wei, Li-Wei
Willke, Benno
Wolf, Rachel
author_facet Brotherton, Daniel C.
Bush, Zachary R.
Croatto, Sandy
Diaz-Ortiz Jr., Mauricio
Egge, Jacob
Ejlli, Aldo
Frädrich, Henry
Gleason, Joe
Grote, Hartmut
Hallal, Ayman
Hartman, Michael T.
Hollis, Harold
Isleif, Katharina-Sophie
James, Alasdair L.
Januschek, Friederike
Karan, Kanioar
Karstensen, Sven
Kozlowski, Todd
Lindner, Axel
Messineo, Giuseppe
Meyer, Manuel
Müller, Guido
Netrval, Ryan
Oceano, Isabella
Othman, Gulden
Põld, Jan H.
Reuther, David
Ringwald, Andreas
Rivasto, Elmeri
Gimeno, José Alejandro Rubiera
Schaffran, Jörn
Schneekloth, Uwe
Schwemmbauer, Christina
Smith, Richard C. G.
Spector, Aaron D.
Tanner, David B.
Trines, Dieter
Wei, Li-Wei
Willke, Benno
Wolf, Rachel
contents The light-shining-through-a-wall experiment ALPS II at DESY in Hamburg searched for axions and similar lightweight particles in its first science campaign from February to May 2024. No evidence for the existence of such particles was found. For pseudoscalar bosons like the axion, with masses below about 0.1 meV, we achieved a limit for the di-photon coupling strength of 1.5e-9 1/GeV at a 95% confidence level. This is more than a factor of 20 improvement compared to all previous similar experiments. We also provide limits on photon interactions for scalar, vector and tensor bosons. An achievement of this first science campaign is the demonstration of stable operation and robust calibration of the complex experiment. Currently, the optical system of ALPS II is being upgraded aiming for another two orders of magnitude sensitivity increase.
format Preprint
id arxiv_https___arxiv_org_abs_2512_14110
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Any Light Particle Searches with ALPS II: first science results
Brotherton, Daniel C.
Bush, Zachary R.
Croatto, Sandy
Diaz-Ortiz Jr., Mauricio
Egge, Jacob
Ejlli, Aldo
Frädrich, Henry
Gleason, Joe
Grote, Hartmut
Hallal, Ayman
Hartman, Michael T.
Hollis, Harold
Isleif, Katharina-Sophie
James, Alasdair L.
Januschek, Friederike
Karan, Kanioar
Karstensen, Sven
Kozlowski, Todd
Lindner, Axel
Messineo, Giuseppe
Meyer, Manuel
Müller, Guido
Netrval, Ryan
Oceano, Isabella
Othman, Gulden
Põld, Jan H.
Reuther, David
Ringwald, Andreas
Rivasto, Elmeri
Gimeno, José Alejandro Rubiera
Schaffran, Jörn
Schneekloth, Uwe
Schwemmbauer, Christina
Smith, Richard C. G.
Spector, Aaron D.
Tanner, David B.
Trines, Dieter
Wei, Li-Wei
Willke, Benno
Wolf, Rachel
High Energy Physics - Experiment
Astrophysics of Galaxies
High Energy Physics - Phenomenology
The light-shining-through-a-wall experiment ALPS II at DESY in Hamburg searched for axions and similar lightweight particles in its first science campaign from February to May 2024. No evidence for the existence of such particles was found. For pseudoscalar bosons like the axion, with masses below about 0.1 meV, we achieved a limit for the di-photon coupling strength of 1.5e-9 1/GeV at a 95% confidence level. This is more than a factor of 20 improvement compared to all previous similar experiments. We also provide limits on photon interactions for scalar, vector and tensor bosons. An achievement of this first science campaign is the demonstration of stable operation and robust calibration of the complex experiment. Currently, the optical system of ALPS II is being upgraded aiming for another two orders of magnitude sensitivity increase.
title Any Light Particle Searches with ALPS II: first science results
topic High Energy Physics - Experiment
Astrophysics of Galaxies
High Energy Physics - Phenomenology
url https://arxiv.org/abs/2512.14110