Rayleigh scattering refers to the 2nd order QED process where a photon is scattered by a bound electron without a change in the photon energy [1]. For photon energies up to the MeV range it is the dominant contribution to the fundamental photon-matter interaction process of elastic scattering. This process is highly polarization-sensitive, making the analysis of polarization transfer in...
ATLAS searches conducted for a BSM light boson using as portal events where a Higgs
boson with mass 125 GeV decays to four leptons will be reported. This decay is presumed
to occur via an intermediate state which contains one or two on-shell, promptly decaying
bosons: H → ZX/XX → 4l, where X is a new dark vector boson Ζd (or a pseudo-scalar α),
with mass between 1 and 60 GeV. These exotic...
The off-shell production of SM Higgs boson, at the high-mass off-peak region beyond
2mZ, well above the measured resonance mass of mH=125 GeV, has a substantial cross
section at the LHC, due to the increased phase space as the Z bosons become on-shell
with the increasing energy scale. This presents a novel way of characterizing the
properties of the Higgs boson in terms of the off-shell...
Experimental studies demonstrate existence of unexplained correlations in biological systems at the distances much larger than quantum mechanics predicts. In particular, kidney and liver cells, blood erythrocytes identify their partner cells and reject wrong ones at the distances which are much larger than the range of chemical forces; no reasonable explanation of such phenomena exist ...
Quarkonia are an important probe into studying the properties of quark-gluon plasma. Proton-proton collisions serve as an essential baseline for studying the effects of quarkonia in proton-nucleon and nucleon-nucleon collisions. This poster presents the main characteristics of Upsilon mesons from Monte Carlo generation of proton-proton collisions at $\sqrt{s}$ = 500 GeV. Monte Carlo event...
In general, the design and construction of CW high-intensity linacs are one of the crucial goals of worldwide accelerator technology development. Such linacs are useful for large-scale research complexes as SNS or ADS. Also, they are usually used as driver-accelerators for radioactive ion beams facilities. Developing an initial part of these linacs is an especially difficult issue. Currently,...
The study of x-ray emission associated with Radiative Recombination at “cold” temperature conditions, as it prevails at electron cooler devices in ion storage rings, allows for a stringent test of atomic structure and the subsequent x-ray emission characteristics. In particular, for heavy, highly charged ions at high Z it enables to investigate in detail the prevailing cascade decay dynamics...
We have designed, built and operated the HILITE (High-Intensity Laser Ion-Trap Experiment) Penning trap which is designed to extend the research of the interaction of high-intensity or high photon-engergy laser pulses to highly-charged ions. The binding energy of electrons in highly-charged ions such as hydrogen-like carbon is comparable to the photon energy of XUV to X-ray free-electron...
The CDCS is an interdisciplinary cooperation among the German Electron Synchrotron DESY, Universität Hamburg, and the Hamburg University of Technology. In the newly emerging Science City Bahrenfeld (SCB), it combines scientific research with state-of-the-art information technology.
The CDCS initially consists of four application-focused, cross-disciplinary laboratories (CDLs), which are...
The recent experimental result on the muon g-2 from Fermilab has confirmed the old Brookhaven result and increased the tension with the Standard Model. We investigate the electroweak sector of supersymmetry to explain the muon g-2 anomaly. We perform a scan of the SUGRA parameter space with the help of a neural network to identify the regions consistent with the g-2 anomaly. It is shown that a...
Surrounding Matter Theory [1], an alternative theory to dark matter, is reminded. Some mathematical developments of the model are presented. First, the Poincare-Einstein synchronization of clocks [2] is revisited in the context of SMT. For this a particular Euclidean view of relativity [3] gives some insight. Then is studied a different interpretation of GR principles using the mathematical...
In this work, the nuclear effects are analyzed in the inclusive production of vector mesons ($\psi$ and $\Upsilon$) at proton-nucleus collisions in a high energy regime. We study in detail the production model, taking into account initial effects like nuclear shadowing and parton saturation. The theoretical framework is given by the QCD dipole formalism which has its parameters determined by...
Mass spectrum, magnetic moment and decay properties of singly heavy strange bottom baryon ($\Xi_{b}^{'-}$) have been studied in this article. Hypercentral quark constituent model (hCQM), a non-relativistic approach, has been utilised to predict the masses of radial and orbital excited states of $\Xi_{b}^{'-}$ baryon, employing color Coulomb plus screened potential as confining potential to...
We explore a semirelativistic model of tetraquarks [$Qq\bar{Q}\bar{q}$]
(Q=b,c and q=u,d), which are considered to be compact and composed of pairs
of diquarks [Qq] and antidiquarks [$\bar{Q}\bar{q}$].
The four-body problem is categorized into two-body problems by numerically
solving the Schrödinger equation using a Cornell potential.
We compare some of the derived predictions for...
A successful cooling of anionic C2- would open up novel experiments based on sympathetic cooling of antiprotons and other anionic systems to sub-Kelvin temperatures. C2- and other anionic molecules produced in an electric discharge in an Even-Lavie valve are accelerated to 1.8 keV in a pulsed electric field; the C2- is then mass selected in a Wien filter. Subsequent deceleration in the static...
We continue our research work for 2 + 1 flavor quarks with magnetic field cooperating non-zero chemical potential in the thermal mass and magnetic field in the potential of the Lagrangian density. The calculated results of EOS of 2+1 flavor quarks with non zero chemical potential has found to be enhanced from earlier works of others for 2+ 1 flavor quarks at the unmagnetized PNJL model. The...
We work on all the known superdeformed (SD) bands in 193Pb
using the modified Variable Moment of Inertia (VMI) model to
obtain the values of unknown band-head spin (I0) along with the
level spins. In this working paper, we have reported the band-head
spin for the 193Pb (b7-b9) superdeformed band. Out of the avail-
able 9 SD bands, the band-head spin is predicted for 3 SD bands,
where the...
The complex installation "Hadron-55" is one of the installations of the Tien-Shan high-mountain scientific station. The installation consists of two blocks spaced 2.2 meters apart. Upper unit - gamma block comprises two rows of ionization chambers arranged in mutually perpendicular directions. This block is used in determining the energy of electron-photon component and in conjunction with all...
This poster presents a search for long-lived dark photons produced from the decay of a Higgs boson or a heavy scalar boson and decaying into displaced collimated Standard Model fermions. The search uses data corresponding to an integrated luminosity of 36.1 fb−1 collected in proton–proton collisions at √ s = 13 TeV recorded in 2015–2016 with the ATLAS detector at the Large Hadron Collider. The...
Conventional water quality monitoring techniques require the collection of samples to be later analysed in a laboratory to determine their physical-chemical and biological attributes. This method has high precision but it can take several days to obtain the results, leaving no reaction time for companies where water is a key production input. Other faster methods involved the use of sensors,...
