| 000 | 04061nlm1a2200493 4500 | ||
|---|---|---|---|
| 001 | 665753 | ||
| 005 | 20231030042013.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\36957 | ||
| 035 | _aRU\TPU\network\36955 | ||
| 090 | _a665753 | ||
| 100 | _a20211112a2020 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _aarcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aAntiproton over proton and K- over K+ multiplicity ratios at high z in DIS _fG. D. Alekseev, M. G. Alekseev, A. Amoroso [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References.: 34 tit.] | ||
| 330 | _aThe antiparticle-over-particle multiplicity ratio is measured in deep-inelastic scattering for negatively and positively charged kaons and, for the first time, for antiprotons and protons. The data were obtained by the COMPASS Collaboration using a 160 GeV muon beam impinging on an isoscalar 6LiD target. The regime of deep-inelastic scattering is ensured by requiring Q2 1 (GeV/c)2 for the photon virtuality and W>5 GeV/c2 for the invariant mass of the produced hadronic system. Bjorken-x is restricted to the range 0.01 to 0.40. Protons and antiprotons are identified in the momentum range from 20 GeV/c to 60 GeV/c and required to carry a large fraction of the virtual-photon energy, z>0.5. In the whole studied z-region, the p- over p multiplicity ratio is found to be below the lower limit expected from calculations based on leading-order perturbative Quantum Chromodynamics (pQCD). Kaons were previously analysed in the momentum range 12 GeV/c to 40 GeV/c. In the present analysis this range is extended up to 55 GeV/c, whereby events with larger virtual-photon energies are included in the analysis and the observed K− over K+ ratio becomes closer to the expectation of next-to-leading order pQCD. The results of both analyses strengthen our earlier conclusion that at COMPASS energies the phase space available for single-hadron production in deep-inelastic scattering should be taken into account in the standard pQCD formalism. | ||
| 461 | _tPhysics Letters B | ||
| 463 |
_tVol. 807 _v[135600, 10 p.] _d2020 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aquantum chromodynamics | |
| 610 | 1 | _apQCD | |
| 610 | 1 | _adeep-inelastic scattering | |
| 610 | 1 | _ahadron multiplicities | |
| 610 | 1 | _aCOMPASS | |
| 610 | 1 | _aквантовая хромодинамика | |
| 610 | 1 | _aглубоконеупругое рассеяние | |
| 610 | 1 | _aмножественность | |
| 701 | 1 |
_aAlekseev _bG. D. _gGennady |
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| 701 | 1 |
_aAlekseev _bM. G. _gMaksim |
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| 701 | 1 |
_aAmoroso _bA. |
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| 701 | 1 |
_aAndrieux _bV. |
|
| 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 |
_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 |
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| 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 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bШкола базовой инженерной подготовки _bОтделение математики и информатики _h8031 _2stltpush _3(RuTPU)RU\TPU\col\23555 |
| 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 _c20211112 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1016/j.physletb.2020.135600 | |
| 942 | _cCF | ||