One of the most successful approaches to the understanding of hard diffraction in DIS is the QCD dipole picture which naturally describes both inclusive and diffractive events within the same theoretical framework1,2. It expresses the scattering of the photon through its fluctuation into a color singlet qq̄ pair (dipole) and the same dipole scattering amplitude enters in the formulation of the i...

In the present paper, we study photoproduction of various $S$-wave $B_c$ states, i.e. $B_c(1{}^1S_0)$, $B_c^*(1{}^1S_0)$, $B_c(2{}^1S_0)$ and $B^*_c(2{}^3S_1)$, at future $e^+e^-$ colliders within framework non-relativistic QCD. Two sources initial photons can be realized in production, i.e., LBS photon WWA photon. addition to direct via sub-process, $\gamma + \gamma \rightarrow B_c b \bar{c}$,...

We study the homologous collapse of stellar nuclear core, virial theorem for hadron collisional relaxations, and photon productions from collisions. thus show gravo-thermal dynamical process that transforms gravitational energy to energy. The is energetically entropically favourable. total baryon number conservation, Euler equation energy-momentum conservation Poisson's potential are adopted de...

a typical radio frequency identification system (rfid) includes one reader and a number of tags. the reader transmit to commands to the tags with interrogation radio signals, and tags receive the command and then respond with their identification. readers with interrogation signals can read tags’ responses. in rfid systems, when multiple tags respond to one reader simultaneously, tag collision ...

rfid system is a wireless technology that can transfer data between tags and readers via radio frequency. in an rfid network, readers are located close to each other to obtain optimal connectivity and sufficient coverage. in such an environment, which is called dense reader environment (dre).different types of collisions such as reader-to-reader and reader-to-tag ones, often lead to serious pro...

A novel scheme is proposed for generating a polarized positron beam via multiphoton Breit-Wheeler process during the collision of 10 GeV, pC seeding electron with other 1 nC driving beam. The provides strong self-generated field, and suitable transverse deviation distance between two beams enables field experienced by to be unipolar, which crucial realizing polarization. We employ particle simu...

We provide high-precision predictions for muon-pair and tau-pair productions in a photon-photon collision by considering complete set of one-loop-level scattering amplitudes, i.e., electroweak (EW) corrections together with soft hard QED radiation. Accordingly, we present detailed numerical discussion particular emphasis on the pure as well genuinely weak corrections. The effects angular initia...

In the last ten years, the spin-dependent structure functions g1 and g2 of the nucleon have been intensively studied in the polarized deep-inelastic scattering of polarized lepton on polarized nucleon targets. Based on the next-to-leading order (NLO) QCD analysis of the experimental data, the polarized parton distributions inside the nucleon have been extracted. The gluon polarization ∆G is now...

Toward the systematic search for axion-like particles in eV mass range, we proposed concept of a stimulated resonant photon collider by focusing three short pulse lasers into vacuum. In order to realize such collider, have performed proof-of-principle experiment with set large incident angles between beams overcome expected difficulty ensure space–time overlap and also established method evalua...