| 000 | 03269nlm1a2200397 4500 | ||
|---|---|---|---|
| 001 | 668564 | ||
| 005 | 20231030042152.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\39791 | ||
| 035 | _aRU\TPU\network\39789 | ||
| 090 | _a668564 | ||
| 100 | _a20221228a2021 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aObservation of Forward Neutron Multiplicity Dependence of Dimuon Acoplanarity in Ultraperipheral Pb-Pb Collisions at √sNN=5.02 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: 48 tit.] | ||
| 330 | _aThe first measurement of the dependence of γγ→μ+μ− production on the multiplicity of neutrons emitted very close to the beam direction in ultraperipheral heavy ion collisions is reported. Data for lead-lead interactions at √sNN=5.02 TeV, with an integrated luminosity of approximately 1.5 nb−1, are collected using the CMS detector at the LHC. The azimuthal correlations between the two muons in the invariant mass region 8<mμμ<60 GeV are extracted for events including 0, 1, or at least 2 neutrons detected in the forward pseudorapidity range |η|>8.3. The back-to-back correlation structure from leading-order photon-photon scattering is found to be significantly broader for events with a larger number of emitted neutrons from each nucleus, corresponding to interactions with a smaller impact parameter. This observation provides a data-driven demonstration that the average transverse momentum of photons emitted from relativistic heavy ions has an impact parameter dependence. These results provide new constraints on models of photon-induced interactions in ultraperipheral collisions. They also provide a baseline to search for possible final-state effects on lepton pairs caused by traversing a quark-gluon plasma produced in hadronic heavy ion collisions. | ||
| 461 | _tPhysical Review Letters | ||
| 463 |
_tVol. 127, iss. 12 _v[122001, 19 p.] _d2021 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aSirunyan _bA. M. |
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| 701 | 1 |
_aTumasyan _bA. R. |
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| 701 | 1 |
_aAdam _bW. _gWolfgang |
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| 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 |
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| 701 | 1 |
_aYuzhakov _bA. D. _gAleksandr Dmitrievich |
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| 701 | 1 |
_aOkhotnikov _bV. V. _cphysicist _cengineer of Tomsk Polytechnic University _f1992- _gVitaly Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\36453 |
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| 701 | 1 |
_aSukhikh _bL. G. _cphysicist _cProfessor of Tomsk Polytechnic University, Doctor of Sciences _f1984- _gLeonid Grigorievich _2stltpush _3(RuTPU)RU\TPU\pers\31554 |
|
| 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 _c20221228 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1103/PhysRevLett.127.122001 | |
| 942 | _cCF | ||