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C1 – Axions and other very weakly interacting sub-eV particles

Project Leaders

Dieter Horns (e-mail | group homepage)

Andreas Ringwald (e-mail | group homepage)


The aim of the project is an exhaustive study of the theory and phenomenology of axions and other very weakly interacting sub-eV particles beyond the Standard Model and an exploration of the corresponding experimental and observational opportunities. We want to explore the possible occurrence of these particles in the hidden sector of concrete and realistic string compactifications and investigate their couplings to the visible sector particles, in particular to photons. Complementary to these theoretical studies, a helioscope search for solar hidden photons (SHIPS experiment) will be set up at the Hamburger Sternwarte.


Anne Ernst

Dieter Horns

Ernst-Axel Knabbe

Axel Lindner

Jhilik Majumdar

Le Hoang Nguyen

Ken'ichi Saikawa

Aaron Spector

Benno Willke

Former members

Markus Ahlers

Sarah Andreas

Paola Arias

Noemie Bastidon

Clare Burrage

Michele Cicoli

Florian Domingo

Babette Döbrich

Mark Goodsell

Friederike Januschek

Kwang Sik Jeong

Natali Kuzkova

Manuel Meyer

Alessandro Mirizzi

Alexandre Payez

Saul Ramos-Sanchez

Javier Redondo

Lily Schrempp

Matthias Schwarz

Patrick Vaudrevange

Christoph Weniger

Hannes-S. Zechlin

Former PIs

Günter Wiedemann


Get these publications as bibtex-file

"Unifying Inflation with the Axion, Dark Matter, Baryogenesis, and the Seesaw Mechanism"
Ballesteros, Guillermo and Redondo, Javier and Ringwald, Andreas and Tamarit, Carlos
Phys. Rev. Lett. 118, 071802 (2017)
doi: 10.1103/PhysRevLett.118.071802
eprint: 1608.05414 [hep-ph]

"Searches for modulation of gamma-ray spectra in the galactic magnetic field as a signature of photon-ALPs mixing"
Majumdar, Jhilik and Calore, Francesca and Horns, Dieter
Proceedings, 6th International Symposium on High-Energy Gamma-Ray Astronomy Gamma 2016: Heidelberg, Germany, July 11-15, 2016, AIP Conf. Proc. (2017)
doi: 10.1063/1.4968992

"Axions as Hot and Cold Dark Matter"
Jeong, Kwang Sik and Kawasaki, Masahiro and Takahashi, Fuminobu
JCAP 1402, 046 (2014)
doi: 10.1088/1475-7516/2014/02/046
eprint: 1310.1774 [hep-ph]

"The quest for axions and other new light particles"
Baker, K. and Cantatore, G. and Cetin, S.A. and Davenport, M. and Desch, K. and others
Annalen Phys. 525, A93-A99 (2013)
doi: 10.1002/andp.201300727
eprint: 1306.2841 [hep-ph]

"More on the Hypercharge Portal into the Dark Sector"
Domingo, Florian and Lebedev, Oleg and Mambrini, Yann and Quevillon, Jérémie and Ringwald, Andreas
JHEP 1309, 020 (2013)
doi: 10.1007/JHEP09(2013)020
eprint: 1305.6815 [hep-ph]

"Any light particle search II —Technical Design Report"
Bähre, Robin and Döbrich, B. and Dreyling-Eschweiler, Jan and Ghazaryan, Samvel and Hodajerdi, Reza and others
JINST 8, T09001 (2013)
doi: 10.1088/1748-0221/8/09/T09001
eprint: 1302.5647 [physics.ins-det]

"First lower limits on the photon-axion-like particle coupling from very high energy gamma-ray observation"
Meyer, Manuel and Horns, Dieter and Raue, Martin
Phys.Rev. D87, 035027 (2013)
doi: 10.1103/PhysRevD.87.035027
eprint: 1302.1208 [astro-ph.HE]

"Searching for WISPy Cold Dark Matter with a Dish Antenna"
Horns, Dieter and Jaeckel, Joerg and Lindner, Axel and Lobanov, Andrei and Redondo, Javier and others
JCAP 1304, 016 (2013)
doi: 10.1088/1475-7516/2013/04/016
eprint: 1212.2970

"Astrophysical searches for a hidden-photon signal in the radio regime"
Lobanov, A.P. and Zechlin, H.-S. and Horns, D.
Phys.Rev. D87, 065004 (2013)
doi: 10.1103/PhysRevD.87.065004
eprint: 1211.6268 [astro-ph.CO]

"Dark Matter and Dark Forces from a Supersymmetric Hidden Sector"
Andreas, S. and Goodsell, M.D. and Ringwald, A.
Phys.Rev. D87, 025007 (2013)
doi: 10.1103/PhysRevD.87.025007
eprint: 1109.2869 [hep-ph]

"Exploring the Role of Axions and Other WISPs in the Dark Universe"
Ringwald, Andreas
Phys.Dark Univ. 1, 116-135 (2012)
doi: 10.1016/j.dark.2012.10.008
eprint: 1210.5081 [hep-ph]

"New Limits on Hidden Photons from Past Electron Beam Dumps"
Andreas, Sarah and Niebuhr, Carsten and Ringwald, Andreas
Phys.Rev. D86, 095019 (2012)
doi: 10.1103/PhysRevD.86.095019
eprint: 1209.6083 [hep-ph]

"Hardening of TeV gamma spectrum of AGNs in galaxy clusters by conversions of photons into axion-like particles"
Horns, Dieter and Maccione, Luca and Meyer, Manuel and Mirizzi, Alessandro and Montanino, Daniele and others
Phys.Rev. D86, 075024 (2012)
doi: 10.1103/PhysRevD.86.075024
eprint: 1207.0776 [astro-ph.HE]

"The type IIB string axiverse and its low-energy phenomenology"
Cicoli, Michele and Goodsell, Mark and Ringwald, Andreas
JHEP 1210, 146 (2012)
doi: 10.1007/JHEP10(2012)146
eprint: 1206.0819 [hep-th]

"Probing axion-like particles with the ultraviolet photon polarization from active galactic nuclei in radio galaxies"
Horns, Dieter and Maccione, Luca and Mirizzi, Alessandro and Roncadelli, Marco
Phys.Rev. D85, 085021 (2012)
doi: 10.1103/PhysRevD.85.085021
eprint: 1203.2184 [astro-ph.HE]

"WISPy Cold Dark Matter"
Arias, Paola and Cadamuro, Davide and Goodsell, Mark and Jaeckel, Joerg and Redondo, Javier and others
JCAP 1206, 013 (2012)
doi: 10.1088/1475-7516/2012/06/013
eprint: 1201.5902 [hep-ph]

"Indications for a pair-production anomaly from the propagation of VHE gamma-rays"
Horns, D. and Meyer, M.
JCAP 1202, 033 (2012)
doi: 10.1088/1475-7516/2012/02/033
eprint: 1201.4711 [astro-ph.CO]

"Kinetic Mixing of U1s in Heterotic Orbifolds"
Goodsell, Mark and Ramos-Sanchez, Saul and Ringwald, Andreas
JHEP 1201, 021 (2012)
doi: 10.1007/JHEP01(2012)021
eprint: 1110.6901 [hep-th]

"Prospects for Searching Axion-like Particle Dark Matter with Dipole, Toroidal and Wiggler Magnets"
Baker, Oliver K. and Betz, Michael and Caspers, Fritz and Jaeckel, Joerg and Lindner, Axel and others
Phys.Rev. D85, 035018 (2012)
doi: 10.1103/PhysRevD.85.035018
eprint: 1110.2180 [physics.ins-det]

"Solar Hidden Photon Search"
Schwarz, Matthias and Lindner, Axel and Redondo, Javier and Ringwald, Andreas and Wiedemann, Guenter and Lindner, Axel and Redondo, Javier and Ringwald, Andreas and Wiedemann, Gunter
Proceedings, 7th Patras Workshop on Axions, WIMPs and WISPs AXION-WIMP 2011: Mykonos, Greece, June 27-July 1, 2011 (2011)
eprint: 1111.5797 [astro-ph.IM] [ link ]

"Testing String Vacua in the Lab: From a Hidden CMB to Dark Forces in Flux Compactifications"
Cicoli, Michele and Goodsell, Mark and Jaeckel, Joerg and Ringwald, Andreas
JHEP 1107, 114 (2011)
doi: 10.1007/JHEP07(2011)114
eprint: 1103.3705 [hep-th]

"Light shining through walls"
Redondo, Javier and Ringwald, Andreas
Contemp.Phys. 52, 211-236 (2011)
doi: 10.1080/00107514.2011.563516
eprint: 1011.3741 [hep-ph]

"Optimizing Light-Shining-through-a-Wall Experiments for Axion and other WISP Searches"
Arias, Paola and Jaeckel, Joerg and Redondo, Javier and Ringwald, Andreas
Phys.Rev. D82, 115018 (2010)
doi: 10.1103/PhysRevD.82.115018
eprint: 1009.4875 [hep-ph]

"Improving the Discovery Potential of Future Light-Shining-through-a-Wall Experiments"
Arias, Paola and Jaeckel, Joerg and Redondo, Javier and Ringwald, Andreas
doi: 10.3204/DESY-PROC-2010-03/arias_paola
eprint: 1009.1519 [hep-ph]

"Constraints on a very light CP-odd Higgs of the NMSSM and other axion-like particles"
Andreas, Sarah and Lebedev, Oleg and Ramos-Sanchez, Saul and Ringwald, Andreas
JHEP 1008, 003 (2010)
doi: 10.1007/JHEP08(2010)003
eprint: 1005.3978 [hep-ph]

"New ALPS Results on Hidden-Sector Lightweights"
Ehret, Klaus and Frede, Maik and Ghazaryan, Samvel and Hildebrandt, Matthias and Knabbe, Ernst-Axel and others
Phys.Lett. B689, 149-155 (2010)
doi: 10.1016/j.physletb.2010.04.066
eprint: 1004.1313 [hep-ex]

"Light Hidden-Sector U1s in String Compactifications"
Goodsell, Mark and Ringwald, Andreas
Fortsch.Phys. 58, 716-720 (2010)
doi: 10.1002/prop.201000026
eprint: 1002.1840 [hep-th]

"The Low-Energy Frontier of Particle Physics"
Jaeckel, Joerg and Ringwald, Andreas
Ann.Rev.Nucl.Part.Sci. 60, 405-437 (2010)
doi: 10.1146/annurev.nucl.012809.104433
eprint: 1002.0329 [hep-ph]

"Late time CMB anisotropies constrain mini-charged particles"
Burrage, C. and Jaeckel, J. and Redondo, J. and Ringwald, A.
JCAP 0911, 002 (2009)
doi: 10.1088/1475-7516/2009/11/002
eprint: 0909.0649 [astro-ph.CO]

"Naturally Light Hidden Photons in LARGE Volume String Compactifications"
Goodsell, Mark and Jaeckel, Joerg and Redondo, Javier and Ringwald, Andreas
JHEP 0911, 027 (2009)
doi: 10.1088/1126-6708/2009/11/027
eprint: 0909.0515 [hep-ph]

"Feasibility, engineering aspects and physics reach of microwave cavity experiments searching for hidden photons and axions"
Caspers, Fritz and Jaeckel, Joerg and Ringwald, Andreas
JINST 4, P11013 (2009)
doi: 10.1088/1748-0221/4/11/P11013
eprint: 0908.0759 [hep-ex]

"Constraining resonant photon-axion conversions in the Early Universe"
Mirizzi, Alessandro and Redondo, Javier and Sigl, Guenter
JCAP 0908, 001 (2009)
doi: 10.1088/1475-7516/2009/08/001
eprint: 0905.4865 [hep-ph]

"Resonant laser power build-up in ALPS - a 'light-shining- through-walls' experiment -"
Ehret, Klaus and others
Nucl. Instrum. Meth. A612, 83-96 (2009)
doi: 10.1016/j.nima.2009.10.102
eprint: 0905.4159 [physics.ins-det]

"Hidden Laser Communications Through Matter -An application of meV-scale hidden photons-"
Jaeckel, Joerg and Redondo, Javier and Ringwald, Andreas
Europhys. Lett. 87, 10010 (2009)
doi: 10.1209/0295-5075/87/10010
eprint: 0903.5300 [hep-ph]

"Cosmic Rays from Leptophilic Dark Matter Decay via Kinetic Mixing"
Ibarra, Alejandro and Ringwald, Andreas and Tran, David and Weniger, Christoph
JCAP 0908, 017 (2009)
doi: 10.1088/1475-7516/2009/08/017
eprint: 0903.3625 [hep-ph]

"Microwave Background Constraints on Mixing of Photons with Hidden Photons"
Mirizzi, Alessandro and Redondo, Javier and Sigl, Gunter
JCAP 0903, 026 (2009)
doi: 10.1088/1475-7516/2009/03/026
eprint: 0901.0014 [hep-ph]

"The Discovery Potential of Laser Polarization Experiments"
Ahlers, Markus and Jaeckel, Joerg and Ringwald, Andreas
Phys. Rev. D79, 075017 (2009)
doi: 10.1103/PhysRevD.79.075017
eprint: 0812.3150 [hep-ph]

"Massive hidden photons as lukewarm dark matter"
Redondo, Javier and Postma, Marieke
JCAP 0902, 005 (2009)
doi: 10.1088/1475-7516/2009/02/005
eprint: 0811.0326 [hep-ph]

"New Constraints on Hidden Photons using Very High Energy Gamma-Rays from the Crab Nebula"
Zechlin, Hannes-Sebastian and Horns, Dieter and Redondo, Javier
AIP Conf. Proc. 1085, 727-730 (2009)
doi: 10.1063/1.3076781
eprint: 0810.5501 [astro-ph]

"Hidden gauginos of an unbroken U1: Cosmological constraints and phenomenological prospects"
Ibarra, A. and Ringwald, A. and Weniger, C.
JCAP 0901, 003 (2009)
doi: 10.1088/1475-7516/2009/01/003
eprint: 0809.3196 [hep-ph]

"Bounds on Very Weakly Interacting Sub-eV Particles WISPs from Cosmology and Astrophysics"
Redondo, Javier
doi: 10.3204/DESY-PROC-2008-02/redondo_javier
eprint: 0810.3200 [hep-ph]

"From Axions to Other WISPs"
Ringwald, Andreas
doi: 10.3204/DESY-PROC-2008-02/ringwald_andreas
eprint: 0810.3106 [hep-th]

"Can the PVLAS particle be compatible with the astrophysical bounds?"
Redondo, Javier
eprint: 0807.4329 [hep-ph]

"Probing Hidden Sector Photons through the Higgs Window"
Ahlers, Markus and Jaeckel, Joerg and Redondo, Javier and Ringwald, Andreas
Phys. Rev. D78, 075005 (2008)
doi: 10.1103/PhysRevD.78.075005
eprint: 0807.4143 [hep-ph]

"Searching Hidden-sector Photons inside a Superconducting Box"
Jaeckel, Joerg and Redondo, Javier
Europhys. Lett. 84, 31002 (2008)
doi: 10.1209/0295-5075/84/31002
eprint: 0806.1115 [hep-ph]

"The Low energy frontier: Probes with photons"
Redondo, Javier
Proceedings, 43rd Rencontres de Moriond on Electroweak Interactions and Unified Theories: La Thuile, Italy, March 1-8, 2008 (2008)
eprint: 0805.3112 [hep-ph]

"Signatures of a hidden cosmic microwave background"
Jaeckel, Joerg and Redondo, Javier and Ringwald, Andreas
Phys. Rev. Lett. 101, 131801 (2008)
doi: 10.1103/PhysRevLett.101.131801
eprint: 0804.4157 [astro-ph]

"On search for eV hidden sector photons in Super-Kamiokande and CAST experiments"
Gninenko, Sergei N. and Redondo, Javier
Phys. Lett. B664, 180-184 (2008)
doi: 10.1016/j.physletb.2008.05.020
eprint: 0804.3736 [hep-ex]

"Kinetic Mixing of the Photon with Hidden U1s in String Phenomenology"
Abel, S. A. and Goodsell, M. D. and Jaeckel, J. and Khoze, V. V. and Ringwald, A.
JHEP 07, 124 (2008)
doi: 10.1088/1126-6708/2008/07/124
eprint: 0803.1449 [hep-ph]

"Helioscope Bounds on Hidden Sector Photons"
Redondo, Javier
JCAP 0807, 008 (2008)
doi: 10.1088/1475-7516/2008/07/008
eprint: 0801.1527 [hep-ph]

"Laser experiments explore the hidden sector"
Ahlers, M. and Gies, H. and Jaeckel, J. and Redondo, J. and Ringwald, A.
Phys. Rev. D77, 095001 (2008)
doi: 10.1103/PhysRevD.77.095001
eprint: 0711.4991 [hep-ph]

"Alpenglow - A Signature for Chameleons in Axion-Like Particle Search Experiments"
Ahlers, M. and Lindner, A. and Ringwald, A. and Schrempp, L. and Weniger, C.
Phys. Rev. D77, 015018 (2008)
doi: 10.1103/PhysRevD.77.015018
eprint: 0710.1555 [hep-ph]

"A Cavity Experiment to Search for Hidden Sector Photons"
Jaeckel, Joerg and Ringwald, Andreas
Phys. Lett. B659, 509-514 (2008)
doi: 10.1016/j.physletb.2007.11.071
eprint: 0707.2063 [hep-ph]

"Axion searches in the past, at present, and in the near future"
Battesti, Remy and others
Lect. Notes Phys. 741, 199-237 (2008)
doi: 10.1007/978-3-540-73518-2_10
eprint: 0705.0615 [hep-ex]

"On the particle interpretation of the PVLAS data: Neutral versus charged particles"
Ahlers, Markus and Gies, Holger and Jaeckel, Joerg and Ringwald, Andreas
Phys. Rev. D75, 035011 (2007)
doi: 10.1103/PhysRevD.75.035011
eprint: hep-ph/0612098

"The Need for Purely Laboratory-Based Axion-Like Particle Searches"
Jaeckel, Joerg and Masso, Eduard and Redondo, Javier and Ringwald, Andreas and Takahashi, Fuminobu
Phys. Rev. D75, 013004 (2007)
doi: 10.1103/PhysRevD.75.013004
eprint: hep-ph/0610203

"Production and detection of axion-like particles in a HERA dipole magnet: Letter-of-intent for the ALPS experiment"
Ehret, Klaus and others
eprint: hep-ex/0702023

"Light from the Hidden Sector"
Ahlers, M. and Gies, H. and Jaeckel, J. and Redondo, J. and Ringwald, A.
Phys. Rev. D76, 115005 (2007)
doi: 10.1103/PhysRevD.76.115005
eprint: 0706.2836 [hep-ph]

"Extending the reach of axion-photon regeneration experiments towards larger masses with phase shift plates"
Jaeckel, Joerg and Ringwald, Andreas
Phys. Lett. B653, 167-172 (2007)
doi: 10.1016/j.physletb.2007.07.066
eprint: 0706.0693 [hep-ph]

"Particle interpretations of the PVLAS data"
Ringwald, Andreas
Neutrino telescopes. Proceedings, 12th International Workshop, Venice, Italy, March 6-9, 2007 (2007)
eprint: 0704.3195 [hep-ph]

"The Low-Energy Frontier"
Lindner, Axel and Ringwald, Andreas
Phys. World, 32-35 (2007)
[ link ]

"Photon Regeneration Plans"
Ringwald, A.
Proceedings, 6th International Workshop on The identification of dark matter IDM 2006: Rhodes, Greece, September 11-16, 2006 (2006)
doi: 10.1142/9789812770288_0052
eprint: hep-ph/0612127 [hep-ph]


PhD thesis: "The Solar Hidden Photon Search SHIPS"
Schwarz, Matthias
Universität Hamburg (2015)

PhD thesis: "A Search for Gamma-ray Imprints of Annihilating Dark Matter in the Galaxy, and the Astrophysical Implications of Ultra-light Fundamental Vector Bosons"
Zechlin, Hannes-Sebastian
Universität Hamburg (2013)
[ link ]

PhD thesis: "Light Weakly Interacting Particles: Constraints and Connection to Dark Matter"
Andreas, Sarah
Universität Hamburg (2013)
doi: 10.3204/DESY-THESIS-2013-024
[ link ]

PhD thesis: "From superWIMPs to decaying dark matter: Models, bounds and indirect searches"
Weniger, Christoph
Universität Hamburg (2010)
doi: 10.3204/DESY-THESIS-2010-024
[ link ]

Impressum  | last modified 12 May 2017