Including long-distance effects in theKL−KSmass splitting

1990 ◽  
Vol 42 (1) ◽  
pp. 118-125 ◽  
Author(s):  
B. Machet ◽  
N. F. Nasrallah ◽  
K. Schilcher
2018 ◽  
Vol 33 (32) ◽  
pp. 1850194
Author(s):  
Aritra Biswas ◽  
Sanjoy Mandal ◽  
Nita Sinha

We show that for a heavy vector-like quark model with a down type isosinglet, branching ratio for [Formula: see text] decay is enhanced by more than [Formula: see text] as compared to that in the Standard model when QCD corrections to next-to-leading order are incorporated. In a left–right symmetric model (LRSM) along with a heavy vector-like fermion, enhancement of this order can be achieved at the bare (QCD uncorrected) level itself. We propose that a measurement of the photon polarization could be used to signal the presence of such new physics in spite of the large long distance effects. We find that there is a large region within the allowed parameter space of the model with a vector-like quark and an additional left–right symmetry, where, the photon polarization can be dominantly right-handed.


1995 ◽  
Vol 438 (1-2) ◽  
pp. 17-53 ◽  
Author(s):  
Roger Decker ◽  
Markus Finkemeier

2012 ◽  
Vol 27 (22) ◽  
pp. 1250125 ◽  
Author(s):  
GULSHEEN AHUJA ◽  
ROHIT VERMA ◽  
PRIYANKA FAKAY ◽  
P. S. GILL ◽  
MANMOHAN GUPTA

Recently several developments have taken place in the lattice QCD calculations of hadronic factors in the case of [Formula: see text] and the [Formula: see text] mixings along with contribution of the long distance effects in the [Formula: see text] system. These have led some authors (Refs. 12 and 13) to point towards the possibility of New Physics (NP) in these systems to the tune of 20% or so. However, the present analysis, based on essentially NP free inputs and incorporating constraints of unitarity, shows that in case the NP effects are there in the parameters associated with these systems, e.g. sin 2β, Vtd, ϵK, etc., these seem to be only at a few percent level.


1988 ◽  
Vol 41 (2) ◽  
pp. 327-331 ◽  
Author(s):  
T. N. Pham ◽  
D. G. Sutherland

2014 ◽  
Vol 86 (1-2) ◽  
pp. 129-137 ◽  
Author(s):  
Marta Manzanera ◽  
Teresa Alcoverro ◽  
José A. Jiménez ◽  
Javier Romero

10.1068/b2673 ◽  
2000 ◽  
Vol 27 (4) ◽  
pp. 549-564 ◽  
Author(s):  
Ferdinando Semboloni

In this study I will analyse the growth of an urban cluster resulting from interaction with a dynamic spatial pattern comprised of cells and roads. In this case, the cells grow in an irregular pattern and can change in number and state, and the roads direct the growth pattern of the urban cluster and stimulate cell generation. The coupled effects of a cellular mechanism and a road network and the long-distance effects determined by spatial mobility are presented in two forms: first in a theoretical framework, and then through numerical simulation in which various sets of key parameters are utilised. A model is proposed in which growth is related to the fractal dimension of the cluster. Finally, conclusions are drawn for the long-run effects of morphology modification in relation to land use and to spatial pattern.


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