https://www.cns.s.u-tokyo.ac.jp/~shimoura/research/nuc_data/pdf/11.pdf

Energy levels of light nuclei A = 11-12

High-energy collisions with atomic nuclei: The experimental results

Study of multiparticle production in the interaction of 12C with photoemulsion nuclei at 4.5 GeV/c per nucleon

Anomalons in relativistic heavy-ion collisions

Most signatures of new physics have been studied on the transverse plane with respect to the beam direction at the LHC where background is much reduced. In this paper we propose the analysis of inclusive longitudinal (pseudo)rapidity correlations among final-state (charged) particles in order to search for (un)particles belonging to a hidden sector beyond the Standard Model, using a selected sample of p–p minimum bias events (applying appropriate off-line cuts on events based on, e.g. minijets, high-multiplicity, event shape variables, high-p⊥ leptons and photons, etc.) collected at the early running of the LHC. To this aim, we examine inclusive and semi-inclusive two-particle correlation functions, forward–backward correlations, and factorial moments of the multiplicity distribution, without resorting to any particular model but under very general (though simplifying) assumptions. Finally, motivated by some analysis techniques employed in the search for quark–gluon plasma in heavy-ion collisions, we investigate the impact of such intermediate (un)particle stuff on the (multi)fractality of parton cascades in p–p collisions, by means of a Levy stable law description and a Ginzburg–Landau model of phase transitions. Results from our preliminary study seem encouraging for possible dedicated analyses at LHC and Tevatron experiments.

Prospects of searching for (un)particles from hidden sectors using rapidity correlations in multiparticle production at the lhc

This paper presents a detailed study of the rapidity gaps and the rapidity correlations among the relativistic particles produced in proton-nucleus interaction in emulsion at 400 GeV/c. The study includes (a) cumulative rapidity-gap distribution and hence the cluster characteristics, (b) distribution of shower width (rapidity), (c) distribution of maximum rapidity gap, and (d) two-particle rapidity correlation. The experimental data have been compared with a Monte Carlo simulation assuming an independent-emission model. The target-nucleus dependence of correlation has also been studied.

Rapidity-gap and rapidity-correlation study in 400-GeV/ c proton-nucleus interactions

This paper presents evidence of the anomalous interaction mean free path of the relativistic alpha particles emitted from the interaction of /sup 12/C with emulsion nuclei at 4.5 GeVc per nucleon. The tracks were followed systematically through the stack. The detailed measurements show clearly that the interaction mean free path is anomalously shorter for a fewer centimeters after their emission. The results have been compared with other results obtained from both accelerator and cosmic-ray data.

Evidence of anomalous behavior of relativistic alpha particles emitted in 12C-emulsion interaction at 4.5 GeV/nucleon.

In this paper we have presented an investigation of cluster characteristics in nucleon-light nucleus and nucleon-heavy nucleus collision in emulsion at ultrahigh cosmic ray energies (above 1 TeV) following a model independent method proposed in a recent paper by Shivpuri et al. It has been observed that the cluster characteristic in both are not very different from those in case of nucleon-nucleon collision.

Study of the Cluster Characteristics in Hadron-Nucleus Interactions at Ultrahigh Cosmic Ray Energies

This paper presents a study of two-particle inclusive angular correlations among "black" and "grey" particles produced in the interaction O16 nuclei with photoemulsions at 2.1 GeV/nucleon. The expe...

Correlation among target fragments produced in a heavy-ion interactions: search for shock-wave phenomenon

This paper presents a study of multiparticle rapidity clustering in proton–nucleon interaction at 70 GeV/c using the generalized rapidity-gap method. The observed rapidity-gap distribution has been compared with those from a model of uncorrelated particle production. A clear indication of cluster production was observed.

Kaushik Sengupta

Papers

Rapidity-gap and rapidity-correlation study in 400-GeV/ c proton-nucleus interactions

Evidence of anomalous behavior of relativistic alpha particles emitted in 12C-emulsion interaction at 4.5 GeV/nucleon.

Study of the Cluster Characteristics in Hadron-Nucleus Interactions at Ultrahigh Cosmic Ray Energies

Correlation among target fragments produced in a heavy-ion interactions: search for shock-wave phenomenon

Study of multiparticle rapidity clustering in hadronic interaction at 70 GeV/c