| 000 | 03525nlm1a2200445 4500 | ||
|---|---|---|---|
| 001 | 663200 | ||
| 005 | 20231030041846.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\34369 | ||
| 090 | _a663200 | ||
| 100 | _a20210129a2020 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aSearch for a light pseudoscalar Higgs boson in the boosted μμττ final state in proton-proton collisions at √s = 13 TeV _fA. M. Sirunyan, A. R. Tumasyan, W. Adam [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 71 tit.] | ||
| 330 | _aA search for a light pseudoscalar Higgs boson (a) decaying from the 125 GeV (or a heavier) scalar Higgs boson (H) is performed using the 2016 LHC proton-proton collision data at s√s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1, collected by the CMS experiment. The analysis considers gluon fusion and vector boson fusion production of the H, followed by the decay H → aa → μμττ, and considers pseudoscalar masses in the range 3.6 < ma < 21 GeV. Because of the large mass difference between the H and the a bosons and the small masses of the a boson decay products, both the μμ and the ττ pairs have high Lorentz boost and are collimated. The ττ reconstruction efficiency is increased by modifying the standard technique for hadronic τ lepton decay reconstruction to account for a nearby muon. No significant signal is observed. Model-independent limits are set at 95% confidence level, as a function of ma, on the branching fraction (ℬ) for H → aa → μμττ, down to 1.5 (2.0) × 10−4 for mH = 125 (300) GeV. Model-dependent limits on ℬ(H → aa) are set within the context of two Higgs doublets plus singlet models, with the most stringent results obtained for Type-III models. These results extend current LHC searches for heavier a bosons that decay to resolved lepton pairs and provide the first such bounds for an H boson with a mass above 125 GeV. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tJournal of High Energy Physics | ||
| 463 |
_tVol. 2020, iss. 8 _v[139, 43 p.] _d2020 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aHadron-Hadron scattering (experiments) | |
| 610 | 1 | _aBeyond Standard Model | |
| 610 | 1 | _aHiggs physics | |
| 610 | 1 | _aадрон-адронное рассеяние | |
| 701 | 1 |
_aSirunyan _bA. M. |
|
| 701 | 1 |
_aTumasyan _bA. R. |
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| 701 | 1 |
_aAdam _bW. _gWolfgang |
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| 701 | 1 |
_aAmbrogi _bF. _gFederico |
|
| 701 | 1 |
_aBergauer _bTh. _gThomas |
|
| 701 | 1 |
_aZhokin _bA. S. _gAleksandr Sergeevich |
|
| 701 | 1 |
_aBabaev _bA. A. _cphysicist _cengineer-issledovatelskogo Polytechnic University, candidate of physical and mathematical Sciences _f1981- _gAnton Anatoljevich _2stltpush _3(RuTPU)RU\TPU\pers\35154 |
|
| 701 | 1 |
_aOkhotnikov _bV. V. _cphysicist _cengineer of Tomsk Polytechnic University _f1992- _gVitaly Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\36453 |
|
| 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 _c20210129 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1007/JHEP08(2020)139 | |
| 942 | _cCF | ||