Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Ivan Nišandžić"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-25 (2023)
Abstract We present updated predictions for lifetimes of doubly charmed baryons, within the heavy quark expansion, including available NLO α s contributions and newly-computed terms in the 1/m c series. Our improved results confirm the expected hier
Externí odkaz:
https://doaj.org/article/9a5db02adc894499898551ba40bd0e2c
Autor:
James Gratrex, Alexander Lenz, Blaženka Melić, Ivan Nišandžić, Maria Laura Piscopo, Aleksey V. Rusov
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 4, Pp 1-36 (2023)
Abstract In the 1990s, very low experimental values for the lifetime ratio τ(Λ b )/τ(B d ) triggered a considerable amount of doubt in the applicability of the heavy quark expansion (HQE), which is based on the assumption of quark-hadron duality (
Externí odkaz:
https://doaj.org/article/e7f2e9cce08c4e75a9df008d681f992a
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-68 (2022)
Abstract We provide an extensive study of the lifetimes of singly charmed baryons and mesons, within the heavy quark expansion with all known corrections included. A special attention is devoted to the choice of the charm mass and wavefunctions of he
Externí odkaz:
https://doaj.org/article/1d06b187b2b9487da7dbb48fa6c3e88e
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 6, Pp 1-26 (2021)
Abstract Evidence for electron-muon universality violation that has been revealed in b → sℓℓ transitions in the observables R KK ∗ $$ {R}_{KK^{\ast }} $$ by the LHCb Collaboration can be explained with spin-1 leptoquarks in SU(2) L singlet V
Externí odkaz:
https://doaj.org/article/460f1c9738d2465f91d5a49857f0953e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 7, Pp 1-9 (2020)
Abstract We consider a Higgs portal model in which the 125-GeV Higgs boson mixes with a light singlet mediator $$h_2$$ h2 coupling to particles of a Dark Sector and study potential $$b\rightarrow s h_2$$ b→sh2 decays in the Belle II experiment. Mul
Externí odkaz:
https://doaj.org/article/db7738720bed404ebf7a1a4573bfb59f
Publikováno v:
Nuclear Physics B, Vol 946, Iss , Pp - (2019)
We derive the expressions for the full angular distributions of B‾→Dℓν‾ℓ and B‾→D⁎ℓν‾ℓ decays and discuss the spectra on each angle separately. The coefficient functions, depending on helicity amplitudes, can then be combined
Externí odkaz:
https://doaj.org/article/a6ae24b7d4bf459486c7012dbc88ad13
Publikováno v:
Physical Review D. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f159546d52a3235915277be22397acf6
https://doi.org/10.1103/physrevd.105.013007
https://doi.org/10.1103/physrevd.105.013007
Publikováno v:
Physical Review
Physical review / D, 101 (7), 073003
Physical review / D, 101 (7), 073003
We present new calculations of the differential decay rates for H→ℓ+ℓ−γ with ℓ=e or μ in the Standard Model. The branching fractions and forward-backward asymmetries, defined in terms of the flight direction of the photon relative to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d252bce0dc96842fa93fddc70f2f9478
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
The European physical journal / C, 80 (7), Art. Nr.: 669
European Physical Journal C: Particles and Fields, Vol 80, Iss 7, Pp 1-9 (2020)
European Physical Journal
European Physical Journal C: Particles and Fields, Vol 80, Iss 7, Pp 1-9 (2020)
European Physical Journal
We consider a Higgs portal model in which the 125-GeV Higgs boson mixes with a light singlet mediator $$h_2$$h2 coupling to particles of a Dark Sector and study potential $$b\rightarrow s h_2$$b→sh2 decays in the Belle II experiment. Multiplying th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e17674deb3a621d95463638ade5b28a7
https://publikationen.bibliothek.kit.edu/1000124402/89542832
https://publikationen.bibliothek.kit.edu/1000124402/89542832
Autor:
Monika Blanke, Ulrich Nierste, Andreas Crivellin, Teppei Kitahara, Marta Moscati, Ivan Nišandžić
Publikováno v:
Physical Review D. 100
The combined analysis of the BABAR, Belle, and LHCb data on $B\ensuremath{\rightarrow}D\ensuremath{\tau}\ensuremath{\nu}$, $B\ensuremath{\rightarrow}{D}^{*}\ensuremath{\tau}\ensuremath{\nu}$ and ${B}_{c}\ensuremath{\rightarrow}J/\mathrm{\ensuremath{\
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a29f19f6679863cb59bf9ff397085fb
https://doi.org/10.1103/physrevd.100.035035
https://doi.org/10.1103/physrevd.100.035035