Polarization Test of Higgs Spin and Parity

A polarization test is applied to determine the spin and the parity of the observed resonance at LHC, which is believed to be the expected "Higgs" particle. The test is based on very general principles and is completely independent of dynamical assumptions. We have also identified a set of observables that discriminate resonances with $J^P=0^+,0^-, 2^-$ and $2^+$. Furthermore, the same set can be used to gain useful and important information on the magnitude of each helicity amplitude contributing to the $gg\rightarrow \gamma\gamma$ process .Comment: 12 pages, 1 Figure, 1 table (references added and typos are corrected

Pion Structure Function F2πF_{2}^{\pi} in the Valon Model

Partonic structure of constituent quark (or{\it{valon}}) in the Next-to-Leading Order is used to calculate pion structure function. This is a further demonstration of the finding that the constituent quark structure is universal, and once it is calculated, the Structure of any hadron can be predicted thereafter, using a convolution method, without introducing any new free parameter. The results are compared with the pion structure function from ZEUS Coll. Leading Neutron Production in $e^{+}p$ collisions at HERA. We found good agreement with the experiment. A resolution for the issue of normalization of the experimental data is suggested. In addition, the proportionality of $F_{2}^{\pi}$ and $F_{2}^{p}$, which have caused confusion in the normalization of ZEUS data is discussed and resolved.Comment: 5 pages and 8 figures. Accepted for publication in Phys. Lett.

Data Dissemination in Wireless Networks with Network Coding

We investigate the use of network coding for information dissemination over a wireless network. Using network coding allows for a simple, distributed and robust algorithm where nodes do not need any information from their neighbors. In this paper, we analyze the time needed to diffuse information throughout a network when network coding is implemented at all nodes. We then provide an upper bound for the dissemination time for ad-hoc networks with general topology. Moreover, we derive a relation between dissemination time and the size of the wireless network. It is shown that for a wireless network with N nodes, the dissemination latency is between O(N) and O(N^2), depending on the reception probabilities of the nodes. These observations are validated by the simulation results