TY  - EJOUR
AU  - Watt, R.
AU  - Kettle, B.
AU  - Gerstmayr, E.
AU  - King, B.
AU  - Alejo, A.
AU  - Astbury, S.
AU  - Baird, C.
AU  - Bohlen, S.
AU  - Campbell, M.
AU  - Colgan, C.
AU  - Dannheim, D.
AU  - Gregory, C.
AU  - Harsh, H.
AU  - Hatfield, P.
AU  - Hinojosa, J.
AU  - Hollatz, D.
AU  - Katzir, Y.
AU  - Morton, J.
AU  - Murphy, C. D.
AU  - Nurnberg, A.
AU  - Osterhoff, J.
AU  - Pérez-Callejo, G.
AU  - Põder, K.
AU  - Rajeev, P. P.
AU  - Roedel, C.
AU  - Roeder, F.
AU  - Salgado, F. C.
AU  - Samarin, G. M.
AU  - Sarri, G.
AU  - Seidel, A.
AU  - Spindloe, C.
AU  - Steinke, S.
AU  - Streeter, M. J. V.
AU  - Thomas, A. G. R.
AU  - Underwood, C.
AU  - Wu, W.
AU  - Zepf, M.
AU  - Rose, S. J.
AU  - Mangles, S. P. D.
TI  - Bounding elastic photon-photon scattering at √s≈ 1 MeV using a laser-plasma platform
IS  - arXiv:2407.12915
M1  - PUBDB-2025-00404
M1  - arXiv:2407.12915
PY  - 2025
N1  - 6 pages, 10 figures
AB  - 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
LB  - PUB:(DE-HGF)25
UR  - https://bib-pubdb1.desy.de/record/622591
ER  -