نتایج جستجو برای: l model

تعداد نتایج: 2651627  

2004
V. Bashiry

The lepton polarization asymmetry in the B → ℓ + ℓ − decay, when one of the leptons is polarized, is investigated using the most general form of the effective Hamiltonian. The sensitivity of the asymmetry to the new Wilson coefficients is studied.Moreover, correlations between the lepton polarization asymmetry and the branching ratio is studied. It is observed that, there are not exist such reg...

2002
T. M. Alieva

T–odd correlations as physical observables in the B → K∗l+l− decay have been studied using the most general form of the effective Hamiltonian. It is observed that these quantities are very sensitive to the new physics. We estimate the potential of discovery of these quantities at future hadron colliders. PACS numbers: 12.60.–i, 13.30.–a, 14.20.Mr e-mail: [email protected] e-mail: ozpineci@ictp...

2001
TADEUSZ MALINSKI JERZY J. LANGER PHILIP J. ELVING

v. 4 Ace. Obsercutorre. The electrochemtcal reductton of l,l’-trimethylenebtsthymine (Thy(C,) in dtmethylsulfoxtde was mvesttgated usmg dc polarography. cyclic voltammetry. controlled potenttal electrolysis and spectroelectrochemtstry. Thy(C, is reduced m a two-electron step (Et ,z = -2.40 V) to a diradical diamon which abstracts protons from the parent Thy(C, to form a neutral free diradtcal a...

2008
Ali Paracha Jamil Aslam

Decay rate and forward-backward asymmetries in B → K1ll , K1 is the axial vector meson, are calculated in the universal extra dimension (UED) model. The dependence of these physical quantities on the compactification radius R, the only unknown paramter in UED model, is studied and it is shown that zero of forward-backward asymmetry is sensitive to the UED model, therefore they can be very usefu...

2016
Ai-Nong YU

Yu A.-N., Tang L.-P. (2016): Kinetics of non-enzymatic browning reaction from the l-ascorbic acid/l-cysteine model system. Czech J. Food Sci., 34: 503–510. The kinetics of the non-enzymatic browning reaction from l-ascorbic acid/l-cysteine model systems was investigated at 125–155°C for 10–120 min by measuring the loss of reactants and monitoring the brown colour development. The result showed ...

2014
Naomi Feldman Yakov Kronrod

Title of dissertation: BAYESIAN MODEL OF CATEGORICAL EFFECTS IN L1 AND L2 SPEECH PERCEPTION Yakov Kronrod, Doctor of Philosophy, 2014 Dissertation directed by: Professor Naomi Feldman Department of Linguistics In this dissertation I present a model that captures categorical effects in both first language (L1) and second language (L2) speech perception. In L1 perception, categorical effects rang...

2002
T. M. Alieva

We present the model independent analysis of Λ baryon polarizations in the Λb → Λl+l− decay. The sensitivity of the averaged Λ polarizations to the new Wilson coefficients is studied. It is observed that there exist certain regions of the new Wilson coefficients where the branching ratio coincides with the standard model prediction, while the Λ baryon polarizations deviate from the standard mod...

Journal: :Physical review. D, Particles and fields 1993
Margolis Ng Phipps Trottier

We analyze the electromagnetic amplitude for the leptonic decays of pseudoscalar mesons in the quark model, with particular emphasis on η → l+l− (l = e, μ). We evaluate the electromagnetic box diagram for a quark-antiquark pair with an arbitrary distribution of relative three-momentum p: the amplitude is obtained to all orders in p/mq, where mq is the quark mass. We compute BP ≡ Γ(η → l+l−)/Γ(η...

2004
Mitch Allen Przemyslaw Prusinkiewicz Theodore DeJong

Carbohydrate partitioning represents a central problem of process−based models of tree growth because of the coupling between carbon partitioning, growth, and architecture. PEACH was an early, sink−driven, carbohydrate partitioning model for simulating reproductive and vegetative growth of fruit trees. Carbon partitioning in that model was based on the hypothesis that a tree grows as a collecti...

2004
Jim Hanan

Cotton (Gossypium hirsutum L.) has a complex architecture resulting from an intricate pattern of development, which strongly influences its ability to capture resources. Computational modelling can play a part in increasing our understanding of the processes intrinsic to the cotton cropping system at the level of individual branches, leaves and bolls. Such studies may be made for many different...

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