| Preprint | |
| Report number | arXiv:2407.12915 |
| Title | Bounding elastic photon-photon scattering at $\sqrt s \approx 1\,$MeV using a laser-plasma platform |
| Author(s) | Watt, R. (JAI, UK) ; Kettle, B. (JAI, UK) ; Gerstmayr, E. (JAI, UK) ; King, B. (Plymouth U.) ; Alejo, A. (Queen's U., Belfast) ; Astbury, S. (Rutherford) ; Baird, C. (York U., England, Dept. Math.) ; Bohlen, S. (DESY) ; Campbell, M. (CERN) ; Colgan, C. (JAI, UK) ; Dannheim, D. (CERN) ; Gregory, C. (Rutherford) ; Harsh, H. (Helmholtz Inst., Jena ; U. Jena (main)) ; Hatfield, P. (CELIA, Bordeaux) ; Hinojosa, J. (Michigan U.) ; Hollatz, D. (Helmholtz Inst., Jena ; U. Jena (main)) ; Katzir, Y. (Rutherford) ; Morton, J. (Honeywell, Aldermaston) ; Murphy, C.D. (York U., England, Dept. Math.) ; Nurnberg, A. (CERN) ; Osterhoff, J. (DESY) ; Pérez-Callejo, G. (Valladolid U.) ; Põder, K. (DESY) ; Rajeev, P.P. (Rutherford) ; Roedel, C. (Helmholtz Inst., Jena) ; Roeder, F. (U. Jena (main)) ; Salgado, F.C. (Helmholtz Inst., Jena ; U. Jena (main)) ; Samarin, G.M. (Queen's U., Belfast) ; Sarri, G. (Queen's U., Belfast) ; Seidel, A. (Helmholtz Inst., Jena ; U. Jena (main)) ; Spindloe, C. (Rutherford) ; Steinke, S. (LBL, Berkeley) ; Streeter, M.J.V. (Queen's U., Belfast ; Lancaster U.) ; Thomas, A.G.R. (Michigan U. ; Lancaster U.) ; Underwood, C. (York U., England, Dept. Math.) ; Wu, W. (JAI, UK) ; Zepf, M. (Helmholtz Inst., Jena ; U. Jena (main)) ; Rose, S.J. (JAI, UK) ; Mangles, S.P.D. (JAI, UK) |
| Imprint | 2024-07-17 |
| Number of pages | 8 |
| Note | 6 pages, 10 figures |
| Subject category | physics.plasm-ph ; Other Fields of Physics ; hep-ph ; Particle Physics - Phenomenology ; hep-ex ; Particle Physics - Experiment |
| Abstract | We report on a direct search for elastic photon-photon scattering using x-ray and $\gamma$ photons from a laser-plasma based experiment. A gamma photon beam produced by a laser wakefield accelerator provided a broadband gamma spectrum extending to above $E_\gamma = 200$ MeV. These were collided with a dense x-ray field produced by the emission from a laser heated germanium foil at $E_x \approx 1.4$ keV, corresponding to an invariant mass of $\sqrt{s} = 1.22 \pm 0.22$ MeV. In these asymmetric collisions elastic scattering removes one x-ray and one high-energy $\gamma$ photon and outputs two lower energy $\gamma$ photons. No changes in the $\gamma$ photon spectrum were observed as a result of the collisions allowing us to place a 95% upper bound on the cross section of $1.5 \times 10^{15}\,\mu$b. Although far from the QED prediction, this represents the lowest upper limit obtained so far for $\sqrt{s} \lesssim 1$ MeV. |
| Other source | Inspire |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) |
Notice créée le 2024-07-26, modifiée le 2024-07-27
