Identity Method Revisited

Abstract

We discuss the impact of finite particle losses associated with instrumental effects in measurements of moments of produced multiplicities with the Identity Method towards the evaluation of fluctuation measures such as ${\nu }_{dyn}$. We show that the identity method remains applicable provided it is modified to determine factorial moments $⟨N(N-1)⟩$, rather than moments $⟨N^2⟩$. We further show that ${\nu }_{dyn}$ remains robust if detection efficiencies are uniform across the measurement's acceptance. The robustness is lost, however, if detection efficiencies are momentum dependent, although the identity methods remains applicable provided detection efficiencies can be determined with sufficient accuracy.

11 pages, 0 figures

References in corpus (17)

• Signatures of the Tricritical Point in QCD
• Baryon-strangeness correlations: a diagnostic of strongly interacting matter
• Methods for the Study of Particle Production Fluctuations
• Acceptance corrections to net baryon and net charge cumulants
• Event-by-event fluctuations in collective quantities
• Multiplicity fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=130$ GeV
• Unified Description of Efficiency Correction and Error Estimation for Moments of Conserved Quantities in Heavy-Ion Collisions
• Local Efficiency Corrections to Higher Order Cumulants
• Net-charge fluctuations in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• K/pi Fluctuations at Relativistic Energies
• Signals of spinodal hadronization: strangeness trapping
• Beam-Energy and System-Size Dependence of Dynamical Net Charge Fluctuations
• Review of Recent Results from the RHIC Beam Energy Scan
• Identity Method for the Determination of the Moments of Multiplicity Distributions
• A Method to Study `Chemical' Fluctuations in Nucleus--Nucleus Collisions
• Identity Method for Particle Number Fluctuations and Correlations
• Correcting Correlation Function Measurements

Cited by in corpus (8)

• The Role of Baryon Number Conservation in Measurements of Fluctuations
• Dynamics of critical fluctuations: Theory -- phenomenology -- heavy-ion collisions
• TIdentity module for the reconstruction of the moments of multiplicity distributions
• Investigating correlated fluctuations of conserved charges with net-$\Lambda$ fluctuations in Pb-Pb collisions at ALICE
• Measurements of multiplicity fluctuations of identified hadrons in inelastic proton-proton interactions at the CERN Super Proton Synchrotron
• Differential Correlation Measurements with the Identity Method
• Particle-Set Identification method to study multiplicity fluctuations
• Generalisation of the identity method for determination of high-order moments of multiplicity distributions with a software implementation