28 research outputs found
Strange hadron production in pp, pPb and PbPb collisions at LHC energies
We present a systematic analysis of transverse momentum spectra of
the strange hadrons in different multiplicity events produced in pp collision
at = 7 TeV, pPb collision at = 5.02 TeV and PbPb
collision at = 2.76 TeV. Both the single and differential
freeze out scenarios of strange hadrons , and are
considered while fitting using a Tsallis distribution which is modified to
include transverse flow. The distributions of these hadrons in
different systems are characterized in terms of the parameters namely, Tsallis
temperature , power and average transverse flow velocity .
It is found that for all the systems, transverse flow increases as we move
from lower to higher multiplicity events. In the case of the differential
freeze-out scenario, the degree of thermalization remains similar for events of
different multiplicity classes in all the three systems. The Tsallis
temperature increases with the mass of the hadrons and also increases with the
event multiplicity in pp and pPb system but shows little variation with the
multiplicity in PbPb system. In the case of the single freeze-out scenario, the
difference between small systems (pp, pPb) and PbPb system becomes more
evident. The high multiplicity PbPb events show higher degree of thermalization
as compared to the events of pp and pPb systems. The trend of variation of the
temperature in PbPb system with event multiplicity is opposite to what is found
in the pp and pPb systems
Charged and Neutral Current Pion Production in Neutrino-Nucleus Scattering
In this article, we present the charged and neutral current coherent pion
production in the neutrino-nucleus interaction in the resonance region using
the formalism based on the partially conserved axial current (PCAC) theorem
which relates the neutrino-nucleus cross section to the pion-nucleus elastic
cross section. The pion nucleus elastic cross section is calculated using the
Glauber model approach. We calculate the integrated cross sections for
neutrino-carbon, neutrino-iron and neutrino-oxygen scattering. The results of
integrated cross-section calculations are compared with the measured dataComment: XXII DAE High Energy Physics Symposium, Springer Proceedings in
Physics 20
Freeze-out of Strange Hadron in pp, pPb and PbPb Collisions at LHC Energies
In this article, we will present a systematic analysis of transverse momentum
spectra of the strange hadron in different multiplicity events produced in pp
collision at = 7 TeV, pPb collision at = 5.02 TeV
and PbPb collision at = 2.76 TeV. The differential freeze out
scenario of strange hadron assumed while analyzing the data using a
Tsallis distribution which is modified to include transverse flow. The
distributions of strange hadron in different systems are characterized in terms
of the parameters namely, Tsallis temperature (), power () and average
transverse flow velocity ().Comment: XXII DAE High Energy Physics Symposium, Springer Proceedings in
Physics 20
Comparison of the effect for fracture resistance of different coronally extended post length with two different post materials
Aims and Objectives: To compare the effect for fracture resistance of different coronally extended post length with two different post materials. Materials and Methods: One hundred and sixty endodontically treated maxillary central incisors embedded in acrylic resin with decoronated root portion were taken for the study. The postspaces were prepared according to standard protocol. The samples were divided into two groups according to the post material: glass-fiber post and Quartz fiber post. These groups were further subdivided on the basis of coronal extension of 4 and 6 mm for glass fiber and Quartz fiber posts, respectively. The posts were then luted with dual-polymerizing resin cement followed by core buildup. Samples were subjected to increasing compressive oblique load until fracture occurred in a universal testing machine. Data were analyzed with one-way ANOVA and independent Student's t-test. Analysis was done using SPSS version 15 (SPSS Inc., Chicago, IL, USA) Windows software program. Results: Glass fiber post with coronal extension of 4 mm (182.8 N) showed better results than with 6-mm length (124.1 N). Similarly, in quartz fiber posts group, 4-mm postlength (314 N) was better when compared with 6 mm (160 N). The 4-mm coronal extension of quartz fiber post displayed superior fracture resistance. Conclusions: Glass fiber posts showed better fracture resistance than Quartz fiber posts. 4-mm coronal length showed more fracture resistance than 6 mm