Based on J/ψ events collected with the BESIII detector,with corresponding Monte Carlo samples,the tracking efficiency and its systematic uncertainty are studied using a control sample of J/ψ→pp^-π＋π^-.Validation...Based on J/ψ events collected with the BESIII detector,with corresponding Monte Carlo samples,the tracking efficiency and its systematic uncertainty are studied using a control sample of J/ψ→pp^-π＋π^-.Validation methods and different factors influencing the tracking efficiency are presented in detail.The tracking efficiency and its systematic uncertainty for protons and pions with the transverse momentum and polar angle dependence are also discussed.展开更多
The calculation of Bayesian confidence upper limit for a Poisson variable including both signal and background with and without systematic uncertainties has been formulated. A Fortran 77 routine, BPULE, has been devel...The calculation of Bayesian confidence upper limit for a Poisson variable including both signal and background with and without systematic uncertainties has been formulated. A Fortran 77 routine, BPULE, has been developed to implement the calculation. The routine can account for systematic uncertainties in the background expectation and signal efficiency. The systematic uncertainties may be separately parameterized by a Gaussian, Log-Gaussian or flat probability density function （pdf）. Some technical details of BPULE have been discussed.展开更多
The construction of the Bayesian credible （confidence） interval for a Poisson observable including both the signal and background with and without systematic uncertainties is presented. Introducing the conditional p...The construction of the Bayesian credible （confidence） interval for a Poisson observable including both the signal and background with and without systematic uncertainties is presented. Introducing the conditional probability satisfying the requirement of the background not larger than the observed events to construct the Bayesian credible interval is also discussed. A Fortran routine, BPOCI, has been developed to implement the calculation.展开更多
Using(10087±44)×10^(6)J/ψevents collected with the BESIII detector in 2009,2012,2018 and 2019,the tracking efficiency of charged pions is studied using the decayJ/ψ→π^(+)π^(-)π^(0).The systematic uncer...Using(10087±44)×10^(6)J/ψevents collected with the BESIII detector in 2009,2012,2018 and 2019,the tracking efficiency of charged pions is studied using the decayJ/ψ→π^(+)π^(-)π^(0).The systematic uncertainty of the tracking efficiency and the corresponding correction factors for charged pions are evaluated,in bins of transverse momentum and polar angle of the charged pions.展开更多
基金Supported by Joint Funds of National Natural Science Foundation of China(U1232201)National Natural Science Foundation of China(11275210,11205182,11205184)National Key Basic Research Program of China(2015CB856700)
文摘Based on J/ψ events collected with the BESIII detector,with corresponding Monte Carlo samples,the tracking efficiency and its systematic uncertainty are studied using a control sample of J/ψ→pp^-π＋π^-.Validation methods and different factors influencing the tracking efficiency are presented in detail.The tracking efficiency and its systematic uncertainty for protons and pions with the transverse momentum and polar angle dependence are also discussed.
文摘The calculation of Bayesian confidence upper limit for a Poisson variable including both signal and background with and without systematic uncertainties has been formulated. A Fortran 77 routine, BPULE, has been developed to implement the calculation. The routine can account for systematic uncertainties in the background expectation and signal efficiency. The systematic uncertainties may be separately parameterized by a Gaussian, Log-Gaussian or flat probability density function （pdf）. Some technical details of BPULE have been discussed.
文摘The construction of the Bayesian credible （confidence） interval for a Poisson observable including both the signal and background with and without systematic uncertainties is presented. Introducing the conditional probability satisfying the requirement of the background not larger than the observed events to construct the Bayesian credible interval is also discussed. A Fortran routine, BPOCI, has been developed to implement the calculation.
基金supported in part by National Key R&D Program of China under Contracts Nos.2020YFA0406300,2020YFA0406400,2023YFA1606000National Natural Science Foundation of China(NSFC)under Contracts Nos.11775245,12075250,12175259,12225509,12275296,12275297.
文摘Using(10087±44)×10^(6)J/ψevents collected with the BESIII detector in 2009,2012,2018 and 2019,the tracking efficiency of charged pions is studied using the decayJ/ψ→π^(+)π^(-)π^(0).The systematic uncertainty of the tracking efficiency and the corresponding correction factors for charged pions are evaluated,in bins of transverse momentum and polar angle of the charged pions.
