| 000 | 03388nlm1a2200433 4500 | ||
|---|---|---|---|
| 001 | 660109 | ||
| 005 | 20231030041654.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\29056 | ||
| 090 | _a660109 | ||
| 100 | _a20190425a2018 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aSearch for a Hypothetical 16.7 MeV Gauge Boson and Dark Photons in the NA64 Experiment at CERN _fD. Banerjee [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 71 tit.] | ||
| 330 | _aWe report the first results on a direct search for a new 16.7 MeV boson (X) which could explain the anomalous excess of e+e− pairs observed in the excited 8Be∗ nucleus decays. Because of its coupling to electrons, the X could be produced in the bremsstrahlung reaction e−Z→e−ZX by a 100 GeV e−beam incident on an active target in the NA64 experiment at the CERN Super Proton Synchrotron and observed through the subsequent decay into a e+e− pair. With 5.4×1010 electrons on target, no evidence for such decays was found, allowing us to set first limits on the X−e− coupling in the range 1.3×10−4≲εe≲4.2×10−4 excluding part of the allowed parameter space. We also set new bounds on the mixing strength of photons with dark photons (A′) from nonobservation of the decay A′→e+e−of the bremsstrahlung A′ with a mass ≲23 MeV. | ||
| 461 | _tPhysical Review Letters | ||
| 463 |
_tVol. 120, iss. 23 _v[231802, 6 p.] _d2018 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aбозоны | |
| 610 | 1 | _aфотоны | |
| 701 | 0 |
_aBanerjee _bD. |
|
| 701 | 1 |
_aBurtsev _bV. E. _cmathematician _cSenior Lecturer of Tomsk Polytechnic University _f1991- _gVitaly Evgenjevich _2stltpush _3(RuTPU)RU\TPU\pers\38282 |
|
| 701 | 1 |
_aChumakov _bA. G. _cphysicist _claboratory assistant-researcher of Tomsk Polytechnic University _f1992- _gAleksandr Grigorjevich _2stltpush _3(RuTPU)RU\TPU\pers\41079 |
|
| 701 | 1 |
_aCrivelli _bP. _gPaolo |
|
| 701 | 1 |
_aDusaev _bR. R. _cspecialist in the field of nuclear physics _cEngineer of Tomsk Polytechnic University _f1988- _gRenat Ramilyevich _2stltpush _3(RuTPU)RU\TPU\pers\30972 |
|
| 701 | 1 |
_aLyubovitskiy (Lyubovitskij) _bV. E. _cphysicist _cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany) _f1963- _gValery Efimovich _2stltpush _3(RuTPU)RU\TPU\pers\33385 |
|
| 701 | 1 |
_aTrifonov _bA. Yu. _cphysicist, mathematician _cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences _f1963- _gAndrey Yurievich _2stltpush _3(RuTPU)RU\TPU\pers\30754 |
|
| 701 | 1 |
_aVasilishin _bB. I. _cengineer-physicist _claboratory researcher at Tomsk Polytechnic University _f1990- _gBogdan Ivanovich _2stltpush _3(RuTPU)RU\TPU\pers\37572 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИсследовательская школа физики высокоэнергетических процессов _c(2017- ) _h8118 _2stltpush _3(RuTPU)RU\TPU\col\23551 |
| 801 | 2 |
_aRU _b63413507 _c20200124 _gRCR |
|
| 856 | 4 | _uhttp://earchive.tpu.ru/handle/11683/57547 | |
| 856 | 4 | _uhttps://doi.org/10.1103/PhysRevLett.120.231802 | |
| 942 | _cCF | ||