Search for Axionlike and Scalar Particles with the NA64 Experiment

D. Banerjee,J. Bernhard,V. E. Burtsev,A. G. Chumakov,D. Cooke,P. Crivelli,E. Depero,A. V. Dermenev,S. V. Donskov,R. R. Dusaev,T. Enik,N. Charitonidis,A. Feshchenko,V. N. Frolov,A. Gardikiotis,S. G. Gerassimov,S. N. Gninenko,M. Hösgen,M. Jeckel,V. A. Kachanov,A. E. Karneyeu,G. Kekelidze,B. Ketzer,D. V. Kirpichnikov,M. M. Kirsanov,V. N. Kolosov,I. V. Konorov,S. G. Kovalenko,V. A. Kramarenko,L. V. Kravchuk,N. V. Krasnikov,S. V. Kuleshov,V. E. Lyubovitskij,V. Lysan,V. A. Matveev,Yu. V. Mikhailov,L. Molina Bueno,D. V. Peshekhonov,V. A. Polyakov,B. Radics,R. Rojas,A. Rubbia,V. D. Samoylenko,H. Sieber,D. Shchukin,V. O. Tikhomirov,I. Tlisova,D. A. Tlisov,A. N. Toropin,A. Yu. Trifonov,B. I. Vasilishin,G. Vasquez Arenas,P. V. Volkov,V. Yu. Volkov,P. Ulloa,NA64 Collaboration; D. Banerjee; J. Bernhard; V. E. Burtsev; A. G. Chumakov; D. Cooke; P. Crivelli; E. Depero; A. V. Dermenev; S. V. Donskov; R. R. Dusaev; T. Enik; N. Charitonidis; A. Feshchenko; V. N. Frolov; A. Gardikiotis; S. G. Gerassimov; S. N. Gninenko; M. Hösgen; M. Jeckel; V. A. Kachanov; A. E. Karneyeu; G. Kekelidze; B. Ketzer; D. V. Kirpichnikov; M. M. Kirsanov; V. N. Kolosov; I. V. Konorov; S. G. Kovalenko; V. A. Kramarenko; L. V. Kravchuk; N. V. Krasnikov; S. V. Kuleshov; V. E. Lyubovitskij; V. Lysan; V. A. Matveev; Yu. V. Mikhailov; L. Molina Bueno; D. V. Peshekhonov; V. A. Polyakov; B. Radics; R. Rojas; A. Rubbia; V. D. Samoylenko; H. Sieber; D. Shchukin; V. O. Tikhomirov; I. Tlisova; D. A. Tlisov; A. N. Toropin; A. Yu. Trifonov; B. I. Vasilishin; G. Vasquez Arenas; P. V. Volkov; V. Yu. Volkov; P. Ulloa; NA64 Collaboration

Search for Axionlike and Scalar Particles with the NA64 Experiment

Clicks: 137

ID: 270149

2020

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 a shield, and would be observed either through their a(s)→γγ decay in the rest of the HCAL detector, or as events with a large missing energy if the a(s) decays downstream of the HCAL. This method allows for the probing of 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 2.84×1011 electrons on target, allowing us to set new limits on the a(s)γγ-coupling strength for a(s) masses below 55 MeV.

Reference Key	collaboration2020physicalsearch Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors	D. Banerjee,J. Bernhard,V. E. Burtsev,A. G. Chumakov,D. Cooke,P. Crivelli,E. Depero,A. V. Dermenev,S. V. Donskov,R. R. Dusaev,T. Enik,N. Charitonidis,A. Feshchenko,V. N. Frolov,A. Gardikiotis,S. G. Gerassimov,S. N. Gninenko,M. Hösgen,M. Jeckel,V. A. Kachanov,A. E. Karneyeu,G. Kekelidze,B. Ketzer,D. V. Kirpichnikov,M. M. Kirsanov,V. N. Kolosov,I. V. Konorov,S. G. Kovalenko,V. A. Kramarenko,L. V. Kravchuk,N. V. Krasnikov,S. V. Kuleshov,V. E. Lyubovitskij,V. Lysan,V. A. Matveev,Yu. V. Mikhailov,L. Molina Bueno,D. V. Peshekhonov,V. A. Polyakov,B. Radics,R. Rojas,A. Rubbia,V. D. Samoylenko,H. Sieber,D. Shchukin,V. O. Tikhomirov,I. Tlisova,D. A. Tlisov,A. N. Toropin,A. Yu. Trifonov,B. I. Vasilishin,G. Vasquez Arenas,P. V. Volkov,V. Yu. Volkov,P. Ulloa,NA64 Collaboration;D. Banerjee;J. Bernhard;V. E. Burtsev;A. G. Chumakov;D. Cooke;P. Crivelli;E. Depero;A. V. Dermenev;S. V. Donskov;R. R. Dusaev;T. Enik;N. Charitonidis;A. Feshchenko;V. N. Frolov;A. Gardikiotis;S. G. Gerassimov;S. N. Gninenko;M. Hösgen;M. Jeckel;V. A. Kachanov;A. E. Karneyeu;G. Kekelidze;B. Ketzer;D. V. Kirpichnikov;M. M. Kirsanov;V. N. Kolosov;I. V. Konorov;S. G. Kovalenko;V. A. Kramarenko;L. V. Kravchuk;N. V. Krasnikov;S. V. Kuleshov;V. E. Lyubovitskij;V. Lysan;V. A. Matveev;Yu. V. Mikhailov;L. Molina Bueno;D. V. Peshekhonov;V. A. Polyakov;B. Radics;R. Rojas;A. Rubbia;V. D. Samoylenko;H. Sieber;D. Shchukin;V. O. Tikhomirov;I. Tlisova;D. A. Tlisov;A. N. Toropin;A. Yu. Trifonov;B. I. Vasilishin;G. Vasquez Arenas;P. V. Volkov;V. Yu. Volkov;P. Ulloa;NA64 Collaboration;
Journal	physical review letters
Year	2020
DOI	10.1103/physrevlett.125.081801
URL	https://sciprofiles.com/publication/view/62924d63a13f3d88a987d9b0674de1c3 https://doi.org/10.1103/physrevlett.125.081801
Keywords	models downstream photons scalar particles axionlike dump hcal na64

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

Login to comment Register

No comments yet. Be the first to comment on this article.