124870414
Antishadowing Corrections in the Evolution Equation of Quark Distributions
We introduce the antishadowing effect to restore the momentum sum rule in the quantum chromodynamics evolution equation for quarks in small x region.
124473583
Partonic Structure of the Pomeron in the Modified GLR Equation
The gluon recombination effect in the pomeron is studied by using the modified Gribov–Levin–Ryskin evolution equation. We find that the measured parton distributions in the pomeron can be generated dynamically from a purely gluonic input on assuming a small size for the pomeron.
119716730
A twist-4 effect in the parton evolution processes
Recently, a research group reported that they can fit the F2 data well by using the Altarelli-Parisi evolution equation with a valence-like initial gluon distribution, which means that we need not consider the high twist effects in the proton. In this letter, we point out that their valence-like initial gluon distribution is unreasonable for the proton structure function. With the reasonable initial distributions, we find that the high twist corrections to the Altarelli-Parisi evolution equation is necessary.
121492263
Antishadowing properties in the small-x region
Abstract The properties of the modified Gribov-Levin-Ryskin evolution equation which incorporates both shadowing and antishadowing are analyzed. We find that some important conclusions of the GLR equation should be rewritten.
121847899
Six-quark cluster effects in nuclei
Abstract Based upon the experiments on the electric form factor for the deuteron, we use the valon model to determine the valon distribution functions in a six-quark cluster and calculate the ratio of the structure functions of the nucleon bound in a light or intermediate heavy nucleus to the ones bound in the deuteron.
122554827
Antishadowing contribution to the small x behavior of the gluon distribution
Abstract We introduce antishadowing into the Gribov-Levin-Ryskin evolution equation and restore the momentum sum rule. It is found clearly that antishadowing will modify the shadowing effect in the region 10 −4 x −2 when a hot spot with small radius exists in the nucleon.
36824022
peace: pulsar evaluation algorithm for candidate extraction – a software package for post-analysis processing of pulsar survey candidates
Modern radio pulsar surveys produce a large volume of prospective candidates, the majority of which are polluted by human-created radio frequency interference or other forms of noise. Typically, large numbers of candidates need to be visually inspected in order to determine if they are real pulsars. This process can be labour intensive. In this paper, we introduce an algorithm called Pulsar Evaluation Algorithm for Candidate Extraction (PEACE) which improves the efficiency of identifying pulsar signals. The algorithm ranks the candidates based on a score function. Unlike popular machine-learning-based algorithms, no prior training data sets are required. This algorithm has been applied to data from several large-scale radio pulsar surveys. Using the human-based ranking results generated by students in the Arecibo Remote Command Center programme, the statistical performance of PEACE was evaluated. It was found that PEACE ranked 68 per cent of the student-identified pulsars within the top 0.17 per cent of sorted candidates, 95 per cent within the top 0.34 per cent and 100 per cent within the top 3.7 per cent. This clearly demonstrates that PEACE significantly increases the