B decays and supersymmetry

Kundu, Anirban

doi:10.1007/bf02706413

Cited by 5 publications

(5 citation statements)

References 37 publications

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“…the experimental data is about factor of three large, thus, there have been various efforts to explain this puzzle. On one hand, new physics contributions have been discussed [27]. However, the enhancement by new physics contributions through penguin diagrams ends up with large branching ratios for all other penguin dominated processes.…”

Section: The Mass Insertion Approximationmentioning

confidence: 99%

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕK_S AND B → η′K_S

Khalil

2005

Pascos 2004

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We analyse the CP asymmetry of the B → φK S and B → η ′ K S processes in general supersymmetric models. We consider both gluino and chargino exchanges in a model independent way by using the mass insertion approximation method. We adopt the QCD factorization method for evaluating the corresponding hadronic matrix elements. We show that chromomagnetic type of operator may play an important role in accounting for the deviation of the mixing CP asymmetry between B → φK S and B → J/ψK S processes observed by Belle and BaBar experiments. We also show that due to the different parity in the final states of these processes, their supersymmetric contributions from the Rsector have an opposite sign, which naturally explain the large deviation between their asymmetries.

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Section: The Mass Insertion Approximationmentioning

confidence: 99%

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕK_S AND B → η′K_S

Khalil

2005

Pascos 2004

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“…On one hand, new physics contributions have been discussed [27]. However, the enhancement by new physics contributions through penguin diagrams ends up with large branching ratios for all other penguin dominated processes.…”

Section: What Happened To Thementioning

confidence: 99%

“…the experimental data is about factor of three large, thus, there have been various efforts to explain this puzzle. On one hand, new physics contributions have been discussed [ 13]. However, the enhancement by new physics contributions through penguin diagrams ends up with large branching ratios for all other penguin dominated processes.…”

Section: On the Branching Ratio Of B → η ′ K S : Gluonium Vs New Physicsmentioning

confidence: 99%

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B→ϕK_S AND B→η'K_S

Khalil

2004

Mod. Phys. Lett. A

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“…Figure 1d shows the schematic band alignment of a CdSe/CdS core-shell QD, which is a type-I heterostructure. [13][14][15][16] The charge carriers are confined in the core region due to the barrier of the shell, [17,18] which generally suppresses the carrier mobility in QD thin films. [19] As such, FET devices based on the core-shell QDs would show an ideal off state in a dark environment by appropriately controlling parameters, as demonstrated below.…”

mentioning

confidence: 99%

Giant Photo‐Induced Current Enhancement in a Core–Shell‐Type Quantum‐Dot Thin Film

Shimizu

Matsuki

Miwa

et al. 2020

Adv Elect Materials

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Photodetectors are key elements in diverse applications such as high‐speed information processing and ultraviolet (UV) ray skin sensors. Low‐dimensional semiconductors, such as quantum dots (QDs) and their hybrid systems, are promising candidates for high‐efficiency and innovative photodetectors, thanks to their unique optoelectronic characteristics and the high tunability of their physical and chemical properties through material design. It is shown that when CdSe/CdS core–shell QDs are employed in field‐effect transistors (FETs), a sensitive photodetection can be obtained by using a solution‐based approach. The transfer characteristics are dramatically changed by UV light irradiation, showing a light‐induced switching between the on/off states of the FET. Surprisingly, the ratio between the photocurrent and the dark current is larger than 105; this is the highest record of gate‐tunable current enhancement obtained using a FET. It is speculated that this remarkable result is related to the fact that the combination of the CdSe core and the CdS shell forms type‐I band alignment, which effectively confines carriers to the core of the nanocrystal under dark conditions. The prominent optoelectronic effect in QD thin‐film FETs indicates the high potential of nanostructured materials towards multi‐functionalization.

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B decays and supersymmetry

Abstract: I discuss how supersymmetry affects various observables in B decays, and point out the interesting channels in the context of B factories.

Cited by 5 publications

References 37 publications

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕK_S AND B → η′K_S

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕK_S AND B → η′K_S

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B→ϕK_S AND B→η'K_S

Giant Photo‐Induced Current Enhancement in a Core–Shell‐Type Quantum‐Dot Thin Film

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B decays and supersymmetry

Abstract: I discuss how supersymmetry affects various observables in B decays, and point out the interesting channels in the context of B factories.

Cited by 5 publications

References 37 publications

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕKS AND B → η′KS

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕKS AND B → η′KS

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B→ϕKS AND B→η'KS

Giant Photo‐Induced Current Enhancement in a Core–Shell‐Type Quantum‐Dot Thin Film

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Product

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SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕK_S AND B → η′K_S

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B → ϕK_S AND B → η′K_S

SUPERSYMMETRIC CONTRIBUTIONS TO THE CP ASYMMETRY OF THE B→ϕK_S AND B→η'K_S