@article {88,
	title = {The ASACUSA antihydrogen and hydrogen program: results and prospects},
	journal = {Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences},
	volume = {376},
	year = {2018},
	abstract = {The goal of the ASACUSA-CUSP collaboration at the Antiproton Decelerator of CERN is to measure the ground-state hyperfine splitting of antihydrogen using an atomic spectroscopy beamline. A milestone was achieved in 2012 through the detection of 80 antihydrogen atoms 2.7 m away from their production region. This was the first observation of {\textquoteleft}cold{\textquoteright} antihydrogen in a magnetic field free region. In parallel to the progress on the antihydrogen production, the spectroscopy beamline was tested with a source of hydrogen. This led to a measurement at a relative precision of 2.7{\texttimes}10-9 which constitutes the most precise measurement of the hydrogen hyperfine splitting in a beam. Further measurements with an upgraded hydrogen apparatus are motivated by CPT and Lorentz violation tests in the framework of the Standard Model Extension. Unlike for hydrogen, the antihydrogen experiment is complicated by the difficulty of synthesizing enough cold antiatoms in the ground state. The first antihydrogen quantum states scan at the entrance of the spectroscopy apparatus was realized in 2016 and is presented here. The prospects for a ppm measurement are also discussed.This article is part of the Theo Murphy meeting issue {\textquoteleft}Antiproton physics in the ELENA era{\textquoteright}.},
	issn = {1364-503X},
	doi = {10.1098/rsta.2017.0273},
	url = {http://rsta.royalsocietypublishing.org/content/376/2116/20170273},
	author = {Malbrunot, C. and Amsler, C. and Arguedas Cuendis, S. and Breuker, H. and Dupre, P. and Fleck, M. and Higaki, H. and Kanai, Y. and Kolbinger, B. and Kuroda, N. and Leali, M. and M{\"a}ckel, V. and Mascagna, V. and Massiczek, O. and Matsuda, Y. and Nagata, Y. and Simon, M. C. and Spitzer, H. and Tajima, M. and Ulmer, S. and Venturelli, L. and Widmann, E. and Wiesinger, M. and Yamazaki, Y. and Zmeskal, J.}
}
@article {72,
	title = {An atomic hydrogen beam to test ASACUSA{\textquoteright}s apparatus for antihydrogen spectroscopy},
	journal = {Hyperfine Interactions},
	volume = {233},
	year = {2015},
	pages = {35-40},
	keywords = {Antihydrogen, Atomic hydrogen, Ground state hyperfine structure},
	issn = {0304-3843},
	doi = {10.1007/s10751-015-1151-y},
	url = {http://dx.doi.org/10.1007/s10751-015-1151-y},
	author = {Diermaier, M. and Caradonna, P. and Kolbinger, B. and Malbrunot, C. and Massiczek, O. and Sauerzopf, C. and Simon, M.C. and Wolf, M. and Zmeskal, J. and Widmann, E.}
}
