35,257 research outputs found

    Exploring a ΣcDˉ\Sigma_{c}\bar{D} state: with focus on Pc(4312)+P_{c}(4312)^{+}

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    Stimulated by the new discovery of Pc(4312)+P_{c}(4312)^{+} by LHCb Collaboration, we endeavor to perform the study of Pc(4312)+P_{c}(4312)^{+} as a ΣcDˉ\Sigma_{c}\bar{D} state in the framework of QCD sum rules. Taking into account the results from two sum rules, a conservative mass range 4.07\sim4.97~\mbox{GeV} is presented for the ΣcDˉ\Sigma_{c}\bar{D} hadronic system, which agrees with the experimental data of Pc(4312)+P_{c}(4312)^{+} and could support its interpretation as a ΣcDˉ\Sigma_{c}\bar{D} state.Comment: 9 pages, 6 figures. arXiv admin note: text overlap with arXiv:1801.0872

    A weighted pair graph representation for reconstructibility of Boolean control networks

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    A new concept of weighted pair graphs (WPGs) is proposed to represent a new reconstructibility definition for Boolean control networks (BCNs), which is a generalization of the reconstructibility definition given in [Fornasini & Valcher, TAC2013, Def. 4]. Based on the WPG representation, an effective algorithm for determining the new reconstructibility notion for BCNs is designed with the help of the theories of finite automata and formal languages. We prove that a BCN is not reconstructible iff its WPG has a complete subgraph. Besides, we prove that a BCN is reconstructible in the sense of [Fornasini & Valcher, TAC2013, Def. 4] iff its WPG has no cycles, which is simpler to be checked than the condition in [Fornasini & Valcher, TAC2013, Thm. 4].Comment: 20 pages, 10 figures, accepted by SIAM Journal on Control and Optimizatio

    Cooperative Downlink Multicell Preprocessing Relying on Reduced-Rate Back-Haul Data Exchange

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    Different-complexity multicell preprocessing (MCP) schemes employing distributed signal-to-interference leakageplus-noise ratio (SILNR) precoding techniques are proposed, which require reduced back-haul data exchange in comparison with the conventional MCP structure. Our results demonstrate that the proposed structures are capable of increasing the throughput achievable in the cell-edge area while offering different geographic rate profile distributions, as well as meeting different delay requirements