QCD anomalies in hadronic weak decays

Gérard, Jean-Marc; Trine, Stéphanie

doi:10.1103/physrevd.69.113005

Cited by 10 publications

(12 citation statements)

References 36 publications

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“…Indeed, in recent theoretical studies it has been found that flat metallic surfaces coated with periodic dielectric structures can support two types of optical modes: SPPs bound at the metallic surfaces and guided modes (GMs) bound at the periodic dielectric structures, or their hybrids [7][8][9][10][11][12] and GMs show well-defined band structures and even band gaps [10][11][12]. As a result, these structures can posses the optical properties of both photonic crystals and periodic plasmonic structures, leading to more degrees of freedom in the manipulation of their optical response.…”

Section: Introductionmentioning

confidence: 99%

Optical response of a flat metallic surface coated with a monolayer array of latex spheres

et al. 2010

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Section: Introductionmentioning

confidence: 99%

Optical response of a flat metallic surface coated with a monolayer array of latex spheres

et al. 2010

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“…(39), . Note that the enhancement of the above branching ratio due to the charm content of the η ′ meson is larger than few percents estimated in [66]. Similarly, we investigate the impact of the η c mixing on the B 0 → ηK S decays.…”

Section: Charmonium M1 Transitionsmentioning

confidence: 99%

ηcmixing effects on charmonium andBmeson decays

Tsai

Zhao

2012

Phys. Rev. D

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We include the ηc meson into the η-η ′ -G mixing formalism constructed in our previous work, where G represents the pseudoscalar gluball. The mixing angles in this tetramixing matrix are constrained by theoretical and experimental implications from relevant hadronic processes. Especially, the angle between ηc and G is found to be about 11• from the measured decay widths of the ηc meson. The pseudoscalar glueball mass mG, the pseudoscalar densities mqq,ss,cc and the U (1) anomaly matrix elements associated with the mixed states are solved from the anomalous Ward identities. The solution mG ≈ 1.4 GeV obtained from the η-η ′ -G mixing is confirmed, while mqq grows to above the pion mass, and thus increases perturbative QCD predictions for the branching ratios Br(B → η ′ K). We then analyze the ηc-mixing effects on charmonium magnetic dipole transitions, and on the B → η (′) KS branching ratios and CP asymmetries, which further improve the consistency between theoretical predictions and data. A predominant observation is that the ηc mixing enhances the perturbative QCD predictions for Br(B → η ′ K) by 18%, but does not alter those for Br(B → ηK). The puzzle due to the large Br(B → η ′ K) data is then resolved.

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“…[11] Bonod et al predicted that EOT could also be found in a continuous metal film as long as it is properly modulated. [12] Several groups have theoretically or experimentally demonstrated that a continuous metal film with nanoslits, [13] nanoridges, [14,15] or other periodically arranged nanostructures [16] shows a similar enhanced transmission feature with that of a perforated metal film, including the sharp Fano-shaped resonance feature. In optoelectric field, the extremely enhanced transmission for a metal film is also named as optical transparency.…”

mentioning

confidence: 99%

“…Zayats and co-workers studied the enhanced transmission of continuous metal films coated with periodic metal or dielectric ridges on one or both interfaces using numerical methods, where the enhanced transmission was explained based on resonant tunneling via SPPs. [14] The dependence of the Fano-shaped transmission spectra on the nanowire periods was observed when the incident polarization is perpendicular to the nanowire grating in the nanostructured metal film by Xiao et al [15] Due to the intricacy in designing regularly nanostructured metal film under experimental conditions, the periodic nanostructures are usually arranged to be touching the metal surface or deposited on substrates. Most researchers were interested in situations where the nanostructures or nanoparticles are arranged at one side of the metal film.…”

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confidence: 99%

Different Transmission Enhancement Mechanisms in a Sandwiched Nanofilm

Zhou

Zhao

Zou

2017

Part & Part Syst Charact

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Using numerical approaches, two different mechanisms leading to enhanced transmission in a sandwiched nanofilm are demonstrated. The film is composed of a flat silver layer and two layers of silver prisms arrays on its both sides. The central flat silver layer is coated with glass substrates on its both sides and the silver prisms arrays are deposited on the glass layers. In the calculations, two different mechanisms leading to enhanced transmission are found. One mechanism follows the conventional believing in which the resonance wavelength depends on the neighboring distance between silver prisms in the array. The enhancement is due to the coupling of propagating surface plasmon polaritons (SPPs). In another mechanism, the resonance wavelength depends on the distance between the silver prisms array and the flat film rather than the neighboring distance between silver prisms in the array. The enhancement is due to the localized surface plasmons instead of propagating SPPs. By changing the thickness of the glass layers, these two mechanisms can also work cooperatively. Parameters that affect the enhanced transmission of the sandwiched nanofilm were also briefly studied.interference of diffracted evanescent waves generated at the subwavelength surface structures, such as holes, slits, or grooves. To explain similar enhanced transmission occurred for a metal film with a periodic array of slits, Takakuru studied the interaction of transverse magnetic-polarized light with a single slit and slits array, [6] Fabry-Pérot-like modes were also used to interpret the EOT phenomenon, where the transmission resonances arise from the setting up of the standing waves in each slit cavity. [7] However, these debates do not limit its applications in many different fields, such as photolithography, [8] optical filters, [9] and optoelectronic devices. [10] While, the presence of holes in a film is not necessary to achieve enhanced transmission. [11] Bonod et al. predicted that EOT could also be found in a continuous metal film as long as it is properly modulated. [12] Several groups have theoretically or experimentally demonstrated that a continuous metal film with nanoslits, [13] nanoridges, [14,15] or other periodically arranged nanostructures [16] shows a similar enhanced transmission feature with that of a perforated metal film, including the sharp Fano-shaped resonance feature. In optoelectric field, the extremely enhanced transmission for a metal film is also named as optical transparency. Continuous metal film has more promising applications in optics and plasmons due to its high electronic conductance when compared with that of metal film with holes, however, the applications are limited by its natural-opacity property. The enhanced transmission for a continuous metal film without holes has sparked the interest from many groups. Zayats and co-workers studied the enhanced transmission of continuous metal films coated with periodic metal or dielectric ridges on one or both interfaces using numerical methods, where the en...

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QCD anomalies in hadronic weak decays

Cited by 10 publications

References 36 publications

Optical response of a flat metallic surface coated with a monolayer array of latex spheres

Optical response of a flat metallic surface coated with a monolayer array of latex spheres

ηcmixing effects on charmonium andBmeson decays

Different Transmission Enhancement Mechanisms in a Sandwiched Nanofilm

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