| 000 | 02871nlm1a2200397 4500 | ||
|---|---|---|---|
| 001 | 668026 | ||
| 005 | 20231030042135.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\39237 | ||
| 035 | _aRU\TPU\network\39235 | ||
| 090 | _a668026 | ||
| 100 | _a20220530a2021 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aForm-factor-independent test of lepton universality in semileptonic heavy meson and baryon decays _fS. Groote, M. A. Ivanov, J. D. Korner [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 44 tit.] | ||
| 330 | _aIn the semileptonic decays of heavy mesons and baryons, the lepton-mass dependence factors out in the quadratic cos2θ coefficient of the differential cosθ distribution. We call the corresponding normalized coefficient the convexity parameter. This observation opens the path to a test of lepton universality in semileptonic heavy meson and baryon decays that is independent of form-factor effects. By projecting out the quadratic rate coefficient, dividing out the lepton-mass-dependent factor, and restricting the phase space integration to the τ lepton phase space, one can define optimized partial rates which, in the Standard Model, are the same for all three (e,μ,τ) modes in a given semileptonic decay process. We discuss how the identity is spoiled by new physics effects. We discuss semileptonic heavy meson decays such as ¯B0→D(*)+ℓ−¯νℓ and B−c→J/ψ(ηc)ℓ−¯νℓ and semileptonic heavy baryon decays such as Λb→Λcℓ−¯νℓ for each ℓ=e, μ, τ. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 |
_tPhysical Review D _ocovering particles, fields, gravitation, and cosmology |
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| 463 |
_tVol. 103, iss. 9 _v[093001, 11 p.] _d2021 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aGroote _bS. _gStefan |
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| 701 | 1 |
_aIvanov _bM. A. _gMikhail |
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| 701 | 1 |
_aKorner _bJ. D. _gJuergen |
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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 |
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| 701 | 1 |
_aSantorelli _bP. _gPietro |
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| 701 | 0 | _aTran Chien Thang | |
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bШкола базовой инженерной подготовки _bОтделение математики и информатики _h8031 _2stltpush _3(RuTPU)RU\TPU\col\23555 |
| 801 | 2 |
_aRU _b63413507 _c20220530 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1103/PhysRevD.103.093001 | |
| 942 | _cCF | ||