Asymptotics of $\mathrm {SL}(2,{{\mathbb {C}}})$ coherent invariant tensors

Autor: Pierre Martin-Dussaud, Pietro Donà, Simone Speziale, Marco Fanizza

Publikováno v: Commun.Math.Phys.
Commun.Math.Phys., 2022, 389 (1), pp.399-437. ⟨10.1007/s00220-021-04154-3⟩
Communications in Mathematical Physics
Communications in Mathematical Physics, Springer Verlag, 2022, 389 (1), pp.399-437. ⟨10.1007/s00220-021-04154-3⟩

We study the semiclassical limit of a class of invariant tensors for infinite-dimensional unitary representations of $\mathrm{SL}(2,\mathbb{C})$ of the principal series, corresponding to generalized Clebsch-Gordan coefficients with $n\geq3$ legs. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09963552285ce111860ee9edbfd4a8bd
https://hal.science/hal-03070617

Simple operator formulation of the Bakamjian-Thomas approach to heavy quark current , with generalisation to HQET, and with applications to transitions of Lambda-b

Autor: Becirevic, Damir, Le-Yaouanc, Alain, Morenas, Vincent, Oliver, Luis

International audience; Starting from the general formulation of current matrix elements in the Bakamjian-Thomas (BT) approach to quark models, certain aspects of their heavy quark limit are exhibited in an intuitive form, allowing a common treatment

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc6c741d30dc2a2f15d3feccf9661e9f
http://arxiv.org/abs/1907.11613

Unexpected pattern of transitions to radial excitations by heavy quark current

Autor: J.-C. Raynal, Alain Le Yaouanc, L. Oliver, Damir Becirevic

Publikováno v: Phys.Rev.D
Phys.Rev.D, 2017, 96 (3), pp.036018. 〈10.1103/PhysRevD.96.036018〉
Physical Review D
Physical Review D, American Physical Society, 2017, 96 (3), pp.036018. ⟨10.1103/PhysRevD.96.036018⟩
Phys.Rev.D, 2017, 96 (3), pp.036018. ⟨10.1103/PhysRevD.96.036018⟩

Motivated by the claimed possibility of a large contribution of the first radial excitation of the $D^{(\ast )}$ to the $B$ semileptonic decay into charmed mesons, also invoked to solve the "$1/2$ vs. $3/2$ semileptonic puzzle", we discuss the transi

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https://hal.archives-ouvertes.fr/hal-01645706

Improved Tests of Lorentz Invariance in the Matter Sector Using Atomic Clocks

Autor: Christine Guerlin, Peter Wolf, H. Pihan-Le Bars, Quentin G. Bailey, Sébastien Bize

Publikováno v: 7th Meeting on CPT and Lorentz Symmetry
7th Meeting on CPT and Lorentz Symmetry, Jun 2016, Bloomington, United States. pp.256-258, ⟨10.1142/9789813148505_0067⟩
CPT and Lorentz Symmetry: Proceedings of the Seventh Meeting on CPT and Lorentz Symmetry
Proceedings of the Seventh Meeting on CPT and Lorentz Symmetry (CPT'16)
Proceedings of the Seventh Meeting on CPT and Lorentz Symmetry (CPT'16), Jun 2016, Bloomington, United States. pp.256

For the purpose of searching for Lorentz-invariance violation in the minimal Standard-Model Extension, we perfom a reanalysis of data obtained from the $^{133}\text{Cs}$ fountain clock operating at SYRTE. The previous study led to new limits on eight

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https://hal.archives-ouvertes.fr/hal-01554502

Improved QCD perturbative contributions and power corrections in radiative and semileptonic rare $B$ decays

Autor: Hiller, Gudrun

Universität Hamburg, Diss., 1998; 133 pp., (1998). doi:10.3204/PUBDB-2016-02640
We calculate the leading power corrections to the decay rates, distributions and hadronic spectral moments in rare inclusive \bxsll decays in the standard model, us

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a2f836726101e190a452bf6987b63c92