2016 Vol. 40, No. 3
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2016, 40(3): 031001. doi: 10.1088/1674-1137/40/3/031001
Abstract:
We calculate the tree and penguin amplitudes in the B0→π+π- decay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle γ to ...
We calculate the tree and penguin amplitudes in the B0→π+π- decay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle γ to ...
2016, 40(3): 033001. doi: 10.1088/1674-1137/40/3/033001
Abstract:
The cross sections of the Higgs production and the corresponding backgrounds of e+e- annihilations at the CEPC (Circular Electron and Positron Collider) are calculated by a Monte-Carlo method, and the beamstrahlung effect at the CEPC is carefully inv...
The cross sections of the Higgs production and the corresponding backgrounds of e+e- annihilations at the CEPC (Circular Electron and Positron Collider) are calculated by a Monte-Carlo method, and the beamstrahlung effect at the CEPC is carefully inv...
2016, 40(3): 033002. doi: 10.1088/1674-1137/40/3/033002
Abstract:
Searching for new resonances and finding out their properties is an essential part of any existing or future particle physics experiment. The nature of a new resonance is characterized by its spin, charge conjugation, parity, and its couplings with t...
Searching for new resonances and finding out their properties is an essential part of any existing or future particle physics experiment. The nature of a new resonance is characterized by its spin, charge conjugation, parity, and its couplings with t...
2016, 40(3): 033003. doi: 10.1088/1674-1137/40/3/033003
Abstract:
The flux of geoneutrinos at any point on the Earth is a function of the abundance and distribution of radioactive elements within our planet. This flux has been successfully detected by the 1-kt KamLAND and 0.3-kt Borexino detectors, with these measu...
The flux of geoneutrinos at any point on the Earth is a function of the abundance and distribution of radioactive elements within our planet. This flux has been successfully detected by the 1-kt KamLAND and 0.3-kt Borexino detectors, with these measu...
2016, 40(3): 033101. doi: 10.1088/1674-1137/40/3/033101
Abstract:
A high luminosity Circular Electron Positron Collider (CEPC) as a Higgs Factory will be helpful for precision measurements of the Higgs mass. The signal-background interference effect is carefully studied for the Higgs diphoton decay mode in associat...
A high luminosity Circular Electron Positron Collider (CEPC) as a Higgs Factory will be helpful for precision measurements of the Higgs mass. The signal-background interference effect is carefully studied for the Higgs diphoton decay mode in associat...
2016, 40(3): 033102. doi: 10.1088/1674-1137/40/3/033102
Abstract:
The latest results from atmospheric and accelerator neutrino experiments indicate that the normal neutrino mass ordering m1 < m2 < m3, a maximal leptonic CP-violating phase δ = 270° and the second octant of neutrino mixing angle θ23 > 45° are favored...
The latest results from atmospheric and accelerator neutrino experiments indicate that the normal neutrino mass ordering m1 < m2 < m3, a maximal leptonic CP-violating phase δ = 270° and the second octant of neutrino mixing angle θ23 > 45° are favored...
2016, 40(3): 033103. doi: 10.1088/1674-1137/40/3/033103
Abstract:
Feynman loop integrals are a key ingredient for the calculation of higher order radiation effects, and are responsible for reliable and accurate theoretical prediction. We improve the efficiency of numerical integration in sector decomposition by imp...
Feynman loop integrals are a key ingredient for the calculation of higher order radiation effects, and are responsible for reliable and accurate theoretical prediction. We improve the efficiency of numerical integration in sector decomposition by imp...
2016, 40(3): 034101. doi: 10.1088/1674-1137/40/3/034101
Abstract:
The precise determination of neutron distribution has important implications for both nuclear structure and nuclear astrophysics. The purpose of this paper is to study the characteristics of neutron distribution of 208Pb by parity-violating electron ...
The precise determination of neutron distribution has important implications for both nuclear structure and nuclear astrophysics. The purpose of this paper is to study the characteristics of neutron distribution of 208Pb by parity-violating electron ...
2016, 40(3): 034102. doi: 10.1088/1674-1137/40/3/034102
Abstract:
In the framework of the double folding model, we used the α+2n and di-triton configurations for the nuclear matter density of the 6He nucleus to generate the real part of the optical potential for the system 6He+12C. As an alternative, we also use th...
In the framework of the double folding model, we used the α+2n and di-triton configurations for the nuclear matter density of the 6He nucleus to generate the real part of the optical potential for the system 6He+12C. As an alternative, we also use th...
2016, 40(3): 034103. doi: 10.1088/1674-1137/40/3/034103
Abstract:
Using the isospin-dependent quantum molecular dynamics model, the entropy of an intermediate-energy heavy ion collision system after the reaction and the number of deuteronlike and protonlike particles produced in the collision is calculated. In the ...
Using the isospin-dependent quantum molecular dynamics model, the entropy of an intermediate-energy heavy ion collision system after the reaction and the number of deuteronlike and protonlike particles produced in the collision is calculated. In the ...
Strange particle production in relativistic nucleus-nucleus collisions in the RHIC BES energy region
2016, 40(3): 034104. doi: 10.1088/1674-1137/40/3/034104
Abstract:
The parton and hadron cascade model PACIAE is used to investigate strange particle production in Au + Au collisions at √s = 62.4 GeV in different centralities and at √s = 39, 11.5 and 7.7 GeV in the most central collision, respectively. It is shown t...
The parton and hadron cascade model PACIAE is used to investigate strange particle production in Au + Au collisions at √s = 62.4 GeV in different centralities and at √s = 39, 11.5 and 7.7 GeV in the most central collision, respectively. It is shown t...
2016, 40(3): 034105. doi: 10.1088/1674-1137/40/3/034105
Abstract:
Using a multi-phase transport model (AMPT) that includes both initial partonic and hadronic interactions, we study neighboring bin multiplicity correlations as a function of pseudorapidity in Au+Au collisions at √SNN = 7.7-62.4 GeV. It is observed th...
Using a multi-phase transport model (AMPT) that includes both initial partonic and hadronic interactions, we study neighboring bin multiplicity correlations as a function of pseudorapidity in Au+Au collisions at √SNN = 7.7-62.4 GeV. It is observed th...
2016, 40(3): 036001. doi: 10.1088/1674-1137/40/3/036001
Abstract:
The silicon pixel sensor (SPS) is one of the key components of hybrid pixel single-photon-counting detectors for synchrotron radiation X-ray detection (SRD). In this paper, the design, fabrication, and characterization of SPSs for single beam X-ray p...
The silicon pixel sensor (SPS) is one of the key components of hybrid pixel single-photon-counting detectors for synchrotron radiation X-ray detection (SRD). In this paper, the design, fabrication, and characterization of SPSs for single beam X-ray p...
2016, 40(3): 036002. doi: 10.1088/1674-1137/40/3/036002
Abstract:
The first neutron texture diffractometer in China has been built at the China Advanced Research Reactor, due to strong demand for texture measurement with neutrons from the domestic user community. This neutron texture diffractometer has high neutron...
The first neutron texture diffractometer in China has been built at the China Advanced Research Reactor, due to strong demand for texture measurement with neutrons from the domestic user community. This neutron texture diffractometer has high neutron...
2016, 40(3): 036003. doi: 10.1088/1674-1137/40/3/036003
Abstract:
The total ionizing radiation (TID) response of commercial NPN silicon germanium hetero-junction bipolar transistors (SiGe HBTs) produced domestically are investigated under dose rates of 800 mGy(Si)/s and 1.3 mGy(Si)/s with a Co-60 gamma irradiation ...
The total ionizing radiation (TID) response of commercial NPN silicon germanium hetero-junction bipolar transistors (SiGe HBTs) produced domestically are investigated under dose rates of 800 mGy(Si)/s and 1.3 mGy(Si)/s with a Co-60 gamma irradiation ...
2016, 40(3): 036101. doi: 10.1088/1674-1137/40/3/036101
Abstract:
A dedicated 4πβ (LS)-γ (HPGe) digital coincidence system with five acquisition channels has been developed. Three ADC acquisition channels with an acquisition resolution of 8 bits and acquisition rate of 1 GSPS are utilized to collect the signals fro...
A dedicated 4πβ (LS)-γ (HPGe) digital coincidence system with five acquisition channels has been developed. Three ADC acquisition channels with an acquisition resolution of 8 bits and acquisition rate of 1 GSPS are utilized to collect the signals fro...
2016, 40(3): 036201. doi: 10.1088/1674-1137/40/3/036201
Abstract:
To overcome the problem of inefficient computing time and unreliable results in MCNP5 calculation, a two-step method is adopted to calculate the energy deposition of prompt γ-rays in detectors for depleted uranium spherical shells under D-T neutron i...
To overcome the problem of inefficient computing time and unreliable results in MCNP5 calculation, a two-step method is adopted to calculate the energy deposition of prompt γ-rays in detectors for depleted uranium spherical shells under D-T neutron i...
2016, 40(3): 036202. doi: 10.1088/1674-1137/40/3/036202
Abstract:
A new frequency domain method for charged particle identification, called Frequency Ratio Analysis (FRA), is proposed by analyzing the frequency spectra of proton pulses and alpha pulses acquired from a totally depleted Si detector. Identification pe...
A new frequency domain method for charged particle identification, called Frequency Ratio Analysis (FRA), is proposed by analyzing the frequency spectra of proton pulses and alpha pulses acquired from a totally depleted Si detector. Identification pe...
2016, 40(3): 037001. doi: 10.1088/1674-1137/40/3/037001
Abstract:
In the SSRF Phase-II beamline project, a superconducting wiggler (SW) will be installed in the electron storage ring. It may greatly impact on the beam dynamics due to the very high magnetic field. The emittance growth becomes a major problem, even a...
In the SSRF Phase-II beamline project, a superconducting wiggler (SW) will be installed in the electron storage ring. It may greatly impact on the beam dynamics due to the very high magnetic field. The emittance growth becomes a major problem, even a...
2016, 40(3): 037002. doi: 10.1088/1674-1137/40/3/037002
Abstract:
An S band SLED-type pulse compressor has been manufactured by the Institute of High Energy Physics, Beijing, trying to reach 100 MW maximum input power, which means the output peak power is about 500 MW at the phase reversal time. To improve the reli...
An S band SLED-type pulse compressor has been manufactured by the Institute of High Energy Physics, Beijing, trying to reach 100 MW maximum input power, which means the output peak power is about 500 MW at the phase reversal time. To improve the reli...
2016, 40(3): 037003. doi: 10.1088/1674-1137/40/3/037003
Abstract:
A 162.5 MHz four-vane radio frequency quadruple (RFQ) accelerator has been developed at the Institute of Modern Physics (IMP) for Injector II of the China ADS linac. The RFQ will operate in continuous wave mode at 100 kW. For the designed 10 mA beam,...
A 162.5 MHz four-vane radio frequency quadruple (RFQ) accelerator has been developed at the Institute of Modern Physics (IMP) for Injector II of the China ADS linac. The RFQ will operate in continuous wave mode at 100 kW. For the designed 10 mA beam,...
2016, 40(3): 037004. doi: 10.1088/1674-1137/40/3/037004
Abstract:
The China Spallation Neutron Source (CSNS) is driven by protons whose energies are about 1.6 GeV. At such high energies, the spallation neutrons lead to the formation of large amounts of helium, hydrogen and new heavier species in the form of transmu...
The China Spallation Neutron Source (CSNS) is driven by protons whose energies are about 1.6 GeV. At such high energies, the spallation neutrons lead to the formation of large amounts of helium, hydrogen and new heavier species in the form of transmu...
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ISSN 1674-1137 CN 11-5641/O4
Original research articles, Ietters and reviews Covering theory and experiments in the fieids of
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