%0 Journal Article
%A Watt, R.
%A Kettle, B.
%A Gerstmayr, E.
%A King, B.
%A Alejo, A.
%A Astbury, S.
%A Baird, C.
%A Bohlen, S.
%A Campbell, M.
%A Colgan, C.
%A Dannheim, D.
%A Gregory, C.
%A Harsh, H.
%A Hatfield, P.
%A Hinojosa, J.
%A Hollatz, D.
%A Katzir, Y.
%A Morton, J.
%A Murphy, C. D.
%A Nurnberg, A.
%A Osterhoff, J.
%A Pérez-Callejo, G.
%A Põder, K.
%A Rajeev, P. P.
%A Roedel, C.
%A Roeder, F.
%A Salgado, F. C.
%A Samarin, G. M.
%A Sarri, G.
%A Seidel, A.
%A Spindloe, C.
%A Steinke, S.
%A Streeter, M. J. V.
%A Thomas, A. G. R.
%A Underwood, C.
%A Wu, W.
%A Zepf, M.
%A Rose, S. J.
%A Mangles, S. P. D.
%T Bounding elastic photon-photon scattering at √s ≈ 1 MeV using a laser-plasma platform
%J Physics letters / B
%V 861
%N arXiv:2407.12915
%@ 0031-9163
%C Amsterdam
%I North-Holland Publ.
%M PUBDB-2024-00751
%M arXiv:2407.12915
%M arXiv:2407.12915
%P 139247
%D 2025
%Z 6 pages, 10 figures
%X We report on a direct search for elastic photon-photon scattering using x-ray and 𝛾 photons from a laser-plasma based experiment. A 𝛾 photon beam produced by a laser wakfield accelerator provided a broadband 𝛾 spectrum extending to above 𝐸𝛾 = 200 MeV. These were collided with a dense x-ray field produced by the emission from a laser heated germanium foil at 𝐸𝑥 ≈ 1.4 keV, corresponding to an invariant mass of √𝑠 = 1.22 ± 0.22 MeV. In these asymmetric collisions elastic scattering removes one x-ray and one high-energy 𝛾 photon and outputs two lower energy 𝛾 photons. No changes in the 𝛾 photon spectrum were observed as a result of the collisions allowing us to place a 95
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001406101100001
%R 10.1016/j.physletb.2025.139247
%U https://bib-pubdb1.desy.de/record/603090