120905653
NON-STATISTICAL FLUCTUATIONS OF PIONS FOR RING- AND JET-LIKE EVENTS AT CERN SPS ENERGY — AN IN-DEPTH ANALYSIS WITH FACTORIAL CORRELATOR
This study reveals the analysis of ring-like and jet-like events in terms of factorial correlations of 16O–Ag/Br interactions at 60A GeV. The investigation revealed that the correlated moments are found to increase with decreasing bin–bin separation D and follows a power-law which suggests the presence of an intermittent nature of self-similar dynamical fluctuations pattern for ring-like and jet-like events. From the analysis we find that for jet-like events the strength of non-statistical fluctuation is greater than the ring-like and total event set. Jet-like events follow the bin size independence according to α model of intermittency as like total events, whereas ring-like events are not consistent with the prediction of α model of intermittency.
122688628
Multifractal detrended fluctuation analysis of pseudorapidity and azimuthal distribution of pions emitted in high energy nuclear collisions
In this paper multifractal analysis of fluctuation pattern of pions emitted in 32S-AgBr and 16O-AgBr interactions at 200 GeV and 60 GeV, respectively, is performed in the framework of multifractal detrended fluctuation analysis (MFDFA). The pseudorapidity and azimuthal distributions exhibit multifractal scaling properties at both energies. The variation of multifractal width with energy is also studied. The study reveals a dependence of multifractal width on energy in pseudorapidity space while no such dependence is observed in azimuthal space.
123909732
Assessment of multifractality in high energy heavy ion interactions
This paper presents an analysis on fractality of compound hadrons (pions + protons) and shower particles produced in heavy ion interactions initiated by 12C and 24Mg beams at incident energy 4.5A GeV and 32S beam at incident energy 200A GeV. G-moments analysis in emission angle (cosθ) space reveals multifractality in both compound hadrons and pion emission process. The degree of multifractality has been assessed using the Levy stability index. Moreover this analysis also suggests nonthermal phase transition in multiparticle production for both cases.
121452244
Evidence of multifractality and constant specific heat in hadronic collisions at high energies
120943535
SELF-AFFINE SCALING AND NON-THERMAL PHASE TRANSITION IN TARGET FRAGMENTS OF MUON–NUCLEUS INTERACTIONS AT HIGH ENERGY
In this paper non-thermal phase transition for the target fragments of lepton–nucleus interactions at (420±45) GeV is studied in the framework of two-dimensional factorial moment methodology using the concept of Hurst exponent (H) to take care of anisotropic phase space. An indication of non-thermal phase transition is obtained where the anisotropic scaling behavior (self affinity) of dynamical fluctuation is best revealed (H = 0.8).
119244246
Four lepton flavor violating signals at the LHC
A bstractSome yet unknown dynamics is expected to be at work behind the flavor puzzles of the Standard Model. Speculations exist that this may manifest itself in significant strength at the terascale. One consequence may be lepton flavor violation with total lepton number conserved. Already observed in neutrino oscillation experiments, such a phenomenon may show up more prominently at TeV energies, thus signaling a completely new physics. Proposed flavor violating charged dilepton states have already been studied with reference to the LHC. Here we study the production and detection at the LHC of flavor violating charged quadrileptons which are shown to have certain advantages over dileptons in searching for lepton flavor violation. A classification of all six-fermionic operators, in the chiral basis and contributing to such processes, is made and the corresponding cross section for each in 14 TeV pp collisions is computed under the hypothesis of single operator dominance. We further present the sensitivity reach of the new physics scale Λ in terms of the integrated luminosity £.
18371867
Constraining R-parity violating couplings from B→PP decays using QCD improved factorization method
We investigate the role of R-parity violating interaction in the non-leptonic decays of B mesons into two light mesons B→PP. The decay amplitudes are calculated using the QCD improved factorization method. Using the combined data on B decays from BaBar, Belle and CLEO, we obtain strong constraints on the various products of R-parity violating couplings. Many of these new constraints are stronger than the existing bounds.
6970579
Signals for R-parity violating supersymmetry at a 500-GeV e+ e- collider
We investigate the production of charginos and neutralinos at a 500 GeV e + e − collider (NLC) and study their decays to the lightest neutralino, which then decays into multifermion final states through couplings which do not conserve R-parity. These couplings are assumed to affect only the decay of the lightest neutralino. Detailed analyses of the possible signals and backgrounds are performed for five selected points in the parameter space.
1450279
Correlations between sneutrino‐antisneutrino oscillations and signatures at the LHC in anomaly‐mediated supersymmetry breaking
Sneutrino‐antisneutrino oscillation can be observed at the LHC by studying a charge asymmetry of the leptons in the final states. In this talk, we demonstrate this in the context of an anomaly‐mediated supersymmetry breaking model which can give rise to a large oscillation probability. The preferred region of the parameter space is characterized by the presence of a sneutrino next‐to‐lightest supersymmetric particle and a stau lightest supersymmetric particle. We show that the signals studied here have certain correlations with the pattern of the sneutrino oscillation.
18210794
Study of R-parity violating supersymmetric signals at an $e^{-} e^{-}$ collider
We study the pair production of right selectrons at a 500 GeV ${e}^{\ensuremath{-}}{e}^{\ensuremath{-}}$ collider followed by their decay into an electron and a lightest neutralino. This lightest neutralino decays into multifermion final states in the presence of R-parity-violating couplings. A detailed analysis of possible signals is performed for some important regions of the parameter space. The signals are essentially free from the standard model backgrounds.