Conveners
A12: High Energy Physics
- Seckson Sukhasena (Naresuan Univeristy)
A12: High Energy Physics
- Pichet Vanichchapongjaroen (Naresuan University)
A12: High Energy Physics
- Patipan Uttayarat Uttayarat (Department of Physics, Faculty of Science, Srinakarinwirot University)
A12: High Energy Physics
- Seckson Sukhasena (The Institute for Fundamental Study (IF), Naresuan university)
The mass-radius ratio bounds of spherically symmetric static compact objects were considered in the ghost-free dRGT massive gravity. In this type of modified general relativity, the graviton has a non-zero mass leading to the naturally generated cosmological constant term. Therefore, this may bring about to an explanation for the late-time accelerated expansion of the Universe without any dark...
This work concentrated on the effect of nuclear equation of state on the direct flow (v1) in heavy ion collision reaction by using the quantum molecular dynamics (QMD) model. In addition, the proton direct flow is a function of the centrality transverse component t of the 4-velocity at incident energy 0.09 A GeV and impact parameter between 0.25 and 0.45 fm by using the nuclear equation of...
We propose an increased entropy production as a characteristic signal for a first-order chiral phase transition to be observed in heavy-ion collisions. Assuming a simple Bjorken description for the central region of the produced fireball, we study the evolution of the expanding medium using a spatially homogeneous fluid and a time-dependent order parameter $\sigma$. We solve the equation of...
We construct the general formula of one-loop amplitude at four-point vertices using Ossola, Papadopoulos, and Pittau (OPP) method. The incoming and outgoing particles are defined as arbitrary massless particles, and the intermediate state contains arbitrary particles inside. In this works, the amplitude is reconstructed via finding four-type rational coefficients. First, box coefficient is...
At ultrarelativistic heavy-ion collisions, a new state of matter, the quark-gluon plasma (QGP) is created. For highest collision energies, recent lattice QCD data provide the opportunity to explore Charm quark equilibration in the early QGP phase. We propose a new method to determine the Charm quark equilibration temperature and volume from second and fourth order net-Charm susceptibilities...
In the past several years, a charged charmoniumlike $Z_c^+$ family, $Z^+_c(4430)$, $Z^+(4051)$, $Z^+(4248)$, $Z^+_c(4200)$, $Z^+_c(4240)$, $Z^+_c(3900)$, $Z^+_c(3885)$, $Z^+_c(3930)$, $Z^+_c(4025)$ and $Z^+_c(4020)$, has been successively observed by experimental collaborations. Obviously, those charged charmoniumlike states go beyond conventional $c\bar c$-meson picture and prefer to...
Suranaree University of Technology is a member of the antiProton ANnihilation at DArmstadt (PANDA) collaboration. The goals of this collaboration are to understand the weak and strong nuclear force, exotic states of matter and the structure of hadrons by building a detector at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. At SUT, we are responsible for...
Baryon mass spectrum has been studied over decades, but theoretical results are still largely inconsistent with experimental data. No need to mention the higher excited states, even the low-lying resonances, for example, theoretical works in the three-quark picture always predict a larger mass for the Roper resonance $N(1440)$ than for $N(1520)$ and $N(1535)$. In our work Baryon masses are...
Boron neutron capture therapy (BNCT) is tumor-cell targeted radiotherapy that has significant superiority over conventional radiotherapies. First in the world, Japan treated with BNCT for a patient with head and neck cancer in last century. So far, some clinical trials used by BNCT have been finished by reactor source. Now, SUT-MNSR (Miniature Neutron Source Reactor) is being designed and...
Abstract
A Large Ion Collider Experiment (ALICE) plans to upgrade the Inner Tracking Systems (ITS) during the second long shut down of the Large Hadron Collider (LHC) in 2019. The current ITS detectors will be replaced by new detectors based on Monolithic Active Pixel Sensors (MAPS) to enhance the tracking performance and momentum resolution. Several MAPS prototypes that integrate an image...
In this work, we will calculate the cross-section of charmed baryon production near threshold from $p\bar p$ annihilation processes. We employ 3-point vertices chiral effective Lagrangian of D-mesons, charmed and light baryons based on $SU(2)$ flavor symmetry, there are 15 terms in total. By using heavy-quark symmetry (HQS) and large-$N_c$ operator analysis, one can reduce the number of low...
Decay process of ground state $\Lambda_c\rightarrow ND, ND^*, \Sigma_c\rightarrow \Delta D, \Delta D^*$ are studied in the $^3P_0$ nonrelativistic quark model with all parameters fixed in the sector of light quark. In accordance with the assumption that all baryons in question are made of three quarks, the effective coupling strength of the $^3P_0$ vertex is determined by the decay processes...
The hadronic products that result from proton-proton collisions at the Large Hadron Collider (LHC) can give rise to jet formation that can be detected be the Compact Muon Solenoid (CMS) detector. The new algorithm is developed to identify charm quark jets while rejecting bottom and light flavor jets called c-tagger. The c-tagger is integrated into the CMS software (CMSSW). It can be used in...
We use the Hypernuclear No-Core Shell Model to study the sensitivity of the hypertriton binding energy to uncertainties in the nucleon-nucleon interaction. Our three-body calculations are performed in the relative Jacobi-coordinate harmonic oscillator basis. In our calculation, we use the leading-order chiral hyperon nucleon(YN) interaction and chiral next-to-next-to-leading-order...
Silicon sensors are used for particle tracking in many high energy physics (HEP) experiments. Suranaree University of Technology (SUT), Thai Micro Electronic Center (TMEC) and A Large Ion Collider Experiment (ALICE) collaborate to develop a new sensor for the Inner Tracking System (ITS). In this project, the new sensor is requested to be 50 microns thick to reduce its material budget. To...
Neutrinos from the standard model of particle physics are massless. However, there have been evidences of the neutrino oscillation indicating that some neutrinos possess tiny but non-zero masses. To describe this phenomenon, new physics at a higher scale, such as seesaw mechanism, is required. The beyond standard model behavior of neutrinos also coincides remarkably with the presence of the...
UrQMD phase-space coalescence calculations for the production of deuterons are compared with available data for various reactions in the GSI/FAIR energy regime. It is found that the production process of deuterons, as reflected in their rapidity and transverse momentum distributions in p+p, p+A and A+A collisions at beam energy starting from 1A GeV, are in good agreement with experimental...
Massive neutrino is a clear evidence of new physics beyond the Standard Model. One of a well motivated new physics scenario is a model with gauged lepton flavor symmetry. We investigate neutrino properties in the minimal SU$(3)_\ell\times$SU$(3)_E$ gauged lepton flavor model. In this model, three new species of fermions are introduced to cancel gauge anomalies. These new fermions lead to a...
Inspired by the forthcoming experimental data at J-PARC and $\overline{P}$ANDA, 3-point vertices chiral Lagrangian for nucleon, delta, $D$ meson and charmed baryon is constructed in the framework of the $\text{SU(2)}$ flavor symmetry. There are 15 terms in the Lagrangian at the chiral power counting orders $Q^{0}$. By applying the heavy-quark symmetry, that is, introducing degeneracy states of...
We present covariant nonlinear duality-symmetric action of kappa-symmetric D3-brane in dual formulation. This construction generalises the Zwanziger action by using the PST-covariantisation, nonlinearisation, and suitable inclusions of coupling with external fields. The covariantisation made use of three auxiliary scalar fields. The theory possesses, in addition to other gauge symmetries, two...
It had been a long time ago the neutrino‐antineutrino considered to happen. In order for this process to take place, the neutrino must be massive Majorana particle. A massiveness neutrino has been revealed and established by the oscillation experiments. If the most promising experiment, neutrinoless double beta decay, can give a positive signal in the near future experiments then the...
