搜索结果: 1-15 共查到“知识库 理学 k-NN”相关记录33条 . 查询时间(0.082 秒)
We examine mass-corrected SU(6) symmetry predictions in the quark model relating vector, axial-vector, and strong NN and NΔ couplings, and demonstrate that the experimental NΔ value is significantly h...
Chiral symmetry and the parity-violating NN pi Yukawa coupling
Lagrange differential pv coupling constant the standard model
2014/12/22
We construct the complete SU(2) parity-violating (PV) π,N,Δ interaction Lagrangian with one derivative, and calculate the chiral corrections to the PV Yukawa NNπ coupling constant hπ through O(1/Λχ3) ...
AN -> NN weak interaction in effective-field theory
A remote physical goldstein bosons decay rate asymmetry
2014/12/20
The nonleptonic weak ∣ΔS∣=1 ΛN interaction, responsible for the dominant nonmesonic decay of all but the lightest hypernuclei, is studied in the framework of an effective-field theory. The long-range ...
一种k-NN分类器k值自动选取方法
分类 k-NN算法 近邻数 近邻数选取
2014/3/3
k-NN 分类算法已广泛应用于文本挖掘和模式识别等领域, 其近邻数k直接影响着分类精度, k 值过小
时k-NN 会受到噪声的影响, k值过大时同样会降低分类精度, 为此提出一种快速选取k值的方法. 首先给出k 值的
候选集, 然后在候选集上快速地选取k 值. 在100 个公开数据集上的实验结果表明, 所提出的算法能够选取一个有效
的近邻数k 是一种效果好、有潜力的方法.
New Way to Produce Dense Double-Antikaonic Dibaryon System, \bar{K}\bar{K} NN, through Lambda(1405)-Doorway Sticking in p+p Collisions
Produce Dense Double-Antikaonic Dibaryon System
2011/7/20
A recent successful observation of a dense and deeply bound \bar{K} nuclear system, K^-pp, in the p + p \rightarrow K^+ + K^-pp reaction in a DISTO experiment indicates that the double-\bar{K} dibaryo...
Relativistic Description of Finite Nuclei Based on Realistic $NN$ Interactions
$NN$ Interactions
2011/7/20
A set of relativistic mean field models is constructed including the Hartree and Hartree-Fock approximation accounting for the exchange of isoscalar and isovector mesons as well as the pion.
Measurement of the nuclear modification factor of electrons from heavy-flavour decays at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with ALICE
nuclear modification electrons heavy-flavour decays Pb-Pb collisions
2011/7/21
We present results on inclusive electrons for 1.5 $ < p_{\rm T} < $ 6 GeV/$c$ in {Pb-Pb} collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV measured with ALICE at the LHC and compare these to a cocktail of ...
Anisotropic flow of charged particles at $\mathbf{\sqrt{s_{NN}} = 2.76}$ TeV measured with the ALICE detector
Anisotropic flow ALICE detector sqrt
2011/7/21
Measurements of anisotropic flow in heavy-ion collisions provide evidence for the creation of strongly interacting matter which appears to behave as an almost ideal fluid. Anisotropic flow signals the...
Untriggered di-hadron correlations in Pb-Pb collisions at $\sqrt{s_{NN}} =$ 2.76 TeV from ALICE
Pb-Pb collisions Untriggered di-hadron correlations ALICE
2011/7/20
We present measurements of untriggered di-hadron correlations as a function of centrality in Pb-Pb \sNN collisions, for charged hadrons with $p_{T} > 0.15$ GeV$/c$. These measurements provide a map of...
New Way to Produce Dense Double-Antikaonic Dibaryon System, \bar{K}\bar{K} NN, through Lambda(1405)-Doorway Sticking in p+p Collisions
Dense Double-Antikaonic Dibaryon System p+p Collisions
2011/7/21
A recent successful observation of a dense and deeply bound \bar{K} nuclear system, K^-pp, in the p + p \rightarrow K^+ + K^-pp reaction in a DISTO experiment indicates that the double-\bar{K} dibaryo...
Charge dependent azimuthal correlations in Pb--Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV
azimuthal correlations Pb--Pb collisions Charge sqrt
2011/7/20
Separation of charges along the extreme magnetic field created in non-central relativistic heavy--ion collisions is predicted to be a signature of local parity violation in strong interactions. We rep...
$\rho^{0}$-vector meson elliptic flow ($v_{2}$) in $Au+Au$ collisions at $\sqrt{s_{NN}} = 200$ GeV in STAR at RHIC
$\rho^{0}$-vector meson elliptic $Au+Au$ collisions $\sqrt{s_{NN}} = 200$ GeV
2011/4/6
$\rho^{0}$-vector meson elliptic flow ($v_{2}$) in $Au+Au$ collisions at $\sqrt{s_{NN}} = 200$ GeV in STAR at RHIC 。
A strongly coupled plasma is produced in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV
strongly coupled plasma produced Pb+Pb collisions
2010/12/31
Results from first measurements of charged particle differential elliptic flow obtained in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV with the ALICE detector at CERN's Large Hadron Collider (LHC),...
Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at sqrt(S(NN))= 2.76 TeV with the ATLAS Detector at the LHC
Observation Centrality-Dependent Dijet Asymmetry Lead-Lead Collisions ATLAS Detector LHC
2010/12/27
Using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-...
The nn quasi-free nd breakup cross section: discrepancies to theory and implications on the 1S0 nn force
nn quasi-free nd breakup cross section discrepancies theory implications
2011/1/6
Large discrepancies between quasi-free neutron-neutron (nn) cross section data from neutron-deuteron (nd) breakup and theoretical predictions based on standard nucleon-nucleon (NN) and three-nucleon (...