| Article | |
| Report number | arXiv:2005.02710 ; CERN-EP-2020-068 |
| Title | Search for Axionlike and Scalar Particles with the NA64 Experiment |
| Related title | Search for scalar and axionlike particles with the NA64 experiment |
| Author(s) |
Banerjee, D. (CERN ; Illinois U., Urbana (main)) ; Bernhard, J. (CERN) ; Burtsev, V.E. (Dubna, JINR) ; Chumakov, A.G. (Tomsk Pedagogical Inst.) ; Cooke, D. (University Coll. London) ; Crivelli, P. (Zurich, ETH) ; Depero, E. (Zurich, ETH) ; Dermenev, A.V. (Moscow, INR) ; Donskov, S.V. (Serpukhov, IHEP) ; Dusaev, R.R. (Tomsk Polytechnic U.) ; Enik, T. (Dubna, JINR) ; Charitonidis, N. (CERN) ; Feshchenko, A. (Dubna, JINR) ; Frolov, V.N. (Dubna, JINR) ; Gardikiotis, A. (Patras U.) ; Gerassimov, S.G. (Munich, Tech. U. ; Lebedev Inst.) ; Gninenko, S.N. (Moscow, INR) ; Hösgen, M. (Bonn U., HISKP) ; Jeckel, M. (CERN) ; Kachanov, V.A. (Serpukhov, IHEP) ; Karneyeu, A.E. (Moscow, INR) ; Kekelidze, G. (Dubna, JINR) ; Ketzer, B. (Bonn U., HISKP) ; Kirpichnikov, D.V. (Moscow, INR) ; Kirsanov, M.M. (Moscow, INR) ; Kolosov, V.N. (Serpukhov, IHEP) ; Konorov, I.V. (Munich, Tech. U. ; Lebedev Inst.) ; Kovalenko, S.G. (Andres Bello Natl. U.) ; Kramarenko, V.A. (Dubna, JINR ; SINP, Moscow) ; Kravchuk, L.V. (Moscow, INR) ; Krasnikov, N.V. (Dubna, JINR ; Moscow, INR) ; Kuleshov, S.V. (Andres Bello Natl. U.) ; Lyubovitskij, V.E. (Tomsk Pedagogical Inst. ; CCTVal, Valparaiso) ; Lysan, V. (Dubna, JINR) ; Matveev, V.A. (Dubna, JINR) ; Mikhailov, Yu V. (Serpukhov, IHEP) ; Molina Bueno, L. (Zurich, ETH) ; Peshekhonov, D.V. (Dubna, JINR) ; Polyakov, V.A. (Serpukhov, IHEP) ; Radics, B. (Zurich, ETH) ; Rojas, R. (CCTVal, Valparaiso) ; Rubbia, A. (Zurich, ETH) ; Samoylenko, V.D. (Serpukhov, IHEP) ; Sieber, H. (Zurich, ETH) ; Shchukin, D. (Lebedev Inst.) ; Tikhomirov, V.O. (Lebedev Inst.) ; Tlisova, I. (Moscow, INR) ; Tlisov, D.A. ; Toropin, A.N. (Moscow, INR) ; Trifonov, A. Yu (Tomsk Pedagogical Inst.) ; Vasilishin, B.I. (Tomsk Polytechnic U.) ; Vasquez Arenas, G. (CCTVal, Valparaiso) ; Volkov, P.V. (Dubna, JINR ; SINP, Moscow) ; Volkov, V.Yu. (SINP, Moscow) ; Ulloa, P. (Andres Bello Natl. U.) |
| Publication | 2020-08-17 |
| Imprint | 2020-05-18 |
| Number of pages | 7 |
| Note | This publication is dedicated to the memory of our colleague Danila Tlisov. 7 pages, 5 figures, revised version accepted for publication in Phys. Rev. Lett |
| In: | Phys. Rev. Lett. 125 (2020) 8 |
| DOI | 10.1103/PhysRevLett.125.081801 (publication) |
| Subject category | Particle Physics - Experiment ; Particle Physics - Phenomenology ; hep-ph ; hep-ex |
| Accelerator/Facility, Experiment | CERN SPS ; NA64 |
| Free keywords | exotics ; forward physics ; rare decay ; calorimeter ; experimental results ; axion ; axion-like particles ; dark matter |
| Abstract | We carried out a model-independent search for light scalar (s) and pseudoscalar axionlike (a) particles that couple to two photons by using the high-energy CERN SPS H4 electron beam. The new particles, if they exist, could be produced through the Primakoff effect in interactions of hard bremsstrahlung photons generated by 100 GeV electrons in the NA64 active dump with virtual photons provided by the nuclei of the dump. The a(s) would penetrate the downstream HCAL module, serving as shielding, and would be observed either through their $a(s)\to\gamma \gamma$ decay in the rest of the HCAL detector or as events with large missing energy if the a(s) decays downstream of the HCAL. This method allows for the probing the a(s) parameter space, including those from generic axion models, inaccessible to previous experiments. No evidence of such processes has been found from the analysis of the data corresponding to $2.84\times10^{11}$ electrons on target allowing to set new limits on the $a(s)\gamma\gamma$-coupling strength for a(s) masses below 55 MeV. |
| Copyright/License | Preprint: © 2020-2024 CERN (License: arXiv nonexclusive-distrib 1.0) Publication: (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
Email contact: renat.dusaev@cern.ch
记录创建於2020-04-29，最後更新在2024-01-02