Journal Article

PUBDB-2024-00751

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Bounding elastic photon-photon scattering at √s ≈ 1 MeV using a laser-plasma platform

Watt, R. ; Kettle, B. ; Gerstmayr, E. ; King, B. (Corresponding author)Extern* ; Alejo, A. ; Astbury, S. ; Baird, C. ; Bohlen, S.DESY* ; Campbell, M. ; Colgan, C. ; Dannheim, D. ; Gregory, C. ; Harsh, H. ; Hatfield, P. ; Hinojosa, J. ; Hollatz, D. ; Katzir, Y. ; Morton, J. ; Murphy, C. D. ; Nurnberg, A. ; Osterhoff, J. ; Pérez-Callejo, G. ; Põder, K. ; Rajeev, P. P. ; Roedel, C. ; Roeder, F. ; Salgado, F. C. ; Samarin, G. M. ; Sarri, G. ; Seidel, A. ; Spindloe, C. ; Steinke, S. ; Streeter, M. J. V. ; Thomas, A. G. R. ; Underwood, C. ; Wu, W. ; Zepf, M. ; Rose, S. J. ; Mangles, S. P. D.

2025
North-Holland Publ. Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.physletb.2025.139247  doi:10.3204/PUBDB-2024-00751

Report No.: arXiv:2407.12915

Abstract: 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% upper bound on the cross section of 1.5 × 1015 μb. Although far from the QED prediction, this represents the lowest upper limit obtained so far for √𝑠 ≲ 1 MeV.

Note: 6 pages, 10 figures

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Contributing Institute(s):

1. Strahlenschutz (D3)
2. Plasma Accelerators (MPA)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. TeX-MEx - Time resolved X-ray probing of Matter under Extreme conditions (682399) (682399)

Experiment(s):

1. Measurement at external facility

Appears in the scientific report 2025

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Watt, R. ; Kettle, B. ; Gerstmayr, E. ; King, B. (Corresponding author)Extern* ; Alejo, A. ; Astbury, S. ; Baird, C. ; Bohlen, S.DESY* ; Campbell, M. ; Colgan, C. ; Dannheim, D. ; Gregory, C. ; Harsh, H. ; Hatfield, P. ; Hinojosa, J. ; Hollatz, D. ; Katzir, Y. ; Morton, J. ; Murphy, C. D. ; Nurnberg, A. ; Osterhoff, J. ; Pérez-Callejo, G. ; Põder, K. ; Rajeev, P. P. ; Roedel, C. ; Roeder, F. ; Salgado, F. C. ; Samarin, G. M. ; Sarri, G. ; Seidel, A. ; Spindloe, C. ; Steinke, S. ; Streeter, M. J. V. ; Thomas, A. G. R. ; Underwood, C. ; Wu, W. ; Zepf, M. ; Rose, S. J. ; Mangles, S. P. D.
Bounding elastic photon-photon scattering at $\sqrt{s}≈$ 1 MeV using a laser-plasma platform
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