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新强子态P_(cs)(4459),Z_(cs)(3985),Z_(cs)(4000)和Z_(cs)(4220)及五夸克味道八重态和四夸克味道九重态的显现

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Science Bulletin 2022年第12期67卷 1209-1212页

作者： Jacopo Ferretti Elena Santopinto Department of Physics University of JyväskyläP.O.Box 35(YFL)40014 JyväskyläFinland infn Sezione di GenovaVia Dodecaneso 3316146 GenovaItaly

Recently,the LHCb and BESⅢCollaborations provided results for two Z_(cs)tetraquarks and a P_(cs)pentaquark.These are hiddencharm four-and five-quark states,characterized by ccsn(ccns)and ccnns quark structures,respec... 详细信息

关键词： BESⅢ 强子九重态夸克

τ BRANCHING FRACTIONS

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Chinese Physics C 2016年第10期40卷 640-644页

作者： S.Banerjee K.Hayes A.Lusiani University of Louisville Hillsdale College Scuola Normale Superiore and infn sezione di Pisa

In order to make optimal use of the experimental data to determine the T branching fractions, their uncertainties, and their correlations, we perform a global minimum X2 fit using the measured values, their uncertainties, their statistical correlations, their dependencies on external parameters and common systematics, and the relations that hold between the branching fractions, including a unitarity constraint on the sum of all the exclusive τ decay branching fractions. Starting with this edition, we use a new fit procedure, which has been elaborated by the Tau Physics Group within the Heavy Flavour Averaging Group （HFAG） [1].

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脉冲星计时阵列观测的随机背景信号对标量诱导引力波的限制

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Science Bulletin 2023年第23期68卷 2929-2935,M0004页

作者：蔡一夫何鑫宸马潇汉鄢盛丰袁官文 Deep Space Exploration Laboratory/Department of Astronomy School of Physical SciencesUniversity of Science and Technology of ChinaHefei 230026China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Istituto Nazionale di Fisica Nucleare(infn) Sezione di MilanoMilano 20146Italy diSAT Universitàdegli Studi dell’InsubriaComo 22100Italy School of Physics The University of Electronic Science and Technology of ChinaChengdu 611731China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Theoretical Physics division Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China

最近,NANOGrav、PPTA、EPTA和CPTA合作组各自独立报告了关于随机引力波背景的观测证据.尽管根据观测推断的引力波背景(幅度、频谱)与超大质量双黑洞并合的预言相一致,但这一观测也为搜寻宇宙早期的新物理现象提供了新的窗口.本文探讨了... 详细信息

最近,NANOGrav、PPTA、EPTA和CPTA合作组各自独立报告了关于随机引力波背景的观测证据.尽管根据观测推断的引力波背景(幅度、频谱)与超大质量双黑洞并合的预言相一致,但这一观测也为搜寻宇宙早期的新物理现象提供了新的窗口.本文探讨了用早期宇宙中的标量诱导引力波来解释这一信号的可能性.作者采用参数化的拐折幂律谱作为随机引力波背景能谱的普适性描述,利用NANOGrav、PPTA和EPTA的新数据和贝叶斯推断的方法进行研究.本研究结果可以约束诱导引力波能谱的相关参数,并进一步对可能在早期宇宙中产生原初黑洞的各种暴胀模型给出限制,这些模型有望在未来的空间引力波观测实验中得到检验.

关键词： Pulsar timing array observation Bayesian inference Stochastic gravitational wave background Induced gravitational waves Early universe

1-13 Constraints on Symmetry Energy from Pygmy Resonances in 68Ni and 132Sn

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IMP & HIRFL Annual Report 2010年第1期 23-25页

作者： Cao Ligang Andrea Carbone Gianluca Colo dipartimento di Fisica Universit＇a degliStudi di Milano via Celoria 16 20133 Milano Italy infn Sezione di Milano via Celoria 16 20133 Milano Italy

Effects of Λ hyperons on the deformations of even–even nuclei

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Chinese Physics C 2022年第6期46卷 212-218页

作者：陈超锋陈启博周先荣程奕源崔继伟 H.-J.Schulze Department of Physics East China Normal UniversityShanghai 200241China School of Physics and Optoelectronic Engineering Xidian UniversityXi'an 710071China infn sezione di Catania Dipartimento di FisicaUniversitádi CataniaVia Santa Sofia 6495123 CataniaItaly

The deformations of multi-Λ hypernuclei corresponding to even-even core nuclei ranging from^(8)Be to^(40)Ca with 2,4,6,and 8 hyperons are studied using the deformed Skyrme-Hartree-Fock approach.It is found that the deformations are reduced when adding 2 or 8 Λ hyperons,but enhanced when adding 4 or 6 Λ hyperons.These differences are attributed to the fact that Λ hyperons are filled gradually into the three deformed p orbits,of which the [110] 1/2^(-)orbit is prolately deformed and the degenerate [101]1/2^(-)and [101]3/2^(-)orbits are oblately deformed.

关键词： deformation even-even nuclei effects of hyperon(s)

Latest results from GRAAL collaboration

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Chinese Physics C 2009年第12期33卷 1249-1253页

作者： V. Vegna V. Bellini J.P. Bouquet L. Casano A. D'Angelo J.P. didelez R. di Salvo A. Fantini D. Franco G. Gervino F. Ghio G. Giardina B. Girolami A. Giusa M. Guidal E. Hourany A.S. Ignatov R. Kunnel A. Lapik A. Lleres P. Levi Sandri F. Mammoliti G. Mandaglio M. Manganaro M. Moricciani A.N. Mushkarenkov V.G. Nedorezov C. Randieri D. Rebreyend N.V. Rudnev G. Russo C. Schaerf M.L. Sperduto M.C. Sutera A.Turinge dip. di Fisica Università degli Studi di Roma 'Tor Vergata' via della Ricerca Scientifica 1 I-00133 Roma Italy infn - sezione di Roma 'Tor Vergata' via della Ricerca Scientifica 1 I-00133 Roma Italy dip. di Fisica e Astronomia Università di Catania via Santa Sofia 44 I-95123 Catania Italy infn - sezione di Catania via Santa Sofia 44 I-95123 Catania Italy LPSC Universit Joseph Fourier Grenoble 1 CNRS/IN2P3 Institut National Polytechnique de Grenoble 53 Avenue des Martyres 38026 Grenoble France IPNO Universit de Paris-Sud 11 CNRS/IN2P3 15 rue Georges Clemenceau 91406 Orsay France dip. di Fisica Sperimentale Università di Torino via P.Giuria I-00125 Torino Italy infn - sezione di Torino via P.Giuria I-00125 Torino Italy Istituto Superiore di Sanità viale Regina Elena 299 I-00161 Roma Italy infn - sezione di Roma piazzale Aldo Moro 2 I-00185 Roma Italy dip. di Fisica Universitàdi Messina salita Sperone 31 I-98166 Messina Italy Institute for Nuclear Research RAS 117312 Moscow Russia infn - Laboratori Nazionali di Frascati via E.Fermi 40 I-00044 Frascati Italy infn - sezione di Catania via Santa Sofia 44 I-95123 Catania Italy

The GRAAL experimental set-up consists of a polarized and tagged photon beam that covers an energy range from a minimum of 600 MeV up to a maximum of 1500 MeV, of a liquid Hydrogen or Deuterium target and of the 4π Lagrange detector optimized for photon detection. It allows the study of pseudo-scalar and vector meson photoproduCtion on the nucleon in the energy range corresponding to the second and the third resonance regions. In the following, the ∑ beam asymmetries in η and π0 photoproduction on quasi-free nucleon are shown. Also single and double polarization observables in K＋A photoproduction on free proton are shown; they are important to confirm the role of new or poorly known resonances in the 1900 MeV mass region.

关键词： polarized photon meson photoproduction polarization observables

Effect of the Tensor Force on Charge-Exchange Spin-Dependent Multipole Excitations

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Chinese Physics Letters 2010年第10期27卷 60-63页

作者：白春林张焕乔张锡珍许甫荣 H. Sagawa G. Colo China Institute of Atomic Energy Beijing 102413 School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 Center for Mathematics and Physics University of Aizu Aizu- Wakamatsu Fukushima 965-8560 Japan dipartimento di Fisica Universitgdegli Studi di Milano and INFN Sezione di Milano 20133 Milano Italy

The charge-exchange spin-dipole （SD） and spin-quadrupole （SQ） strength functions of 90Zr are calculated with and without the tensor terms of the Skyrme interaction in self-consistent HF＋RPA approach. It is found that, in SD and SQ transitions, the RPA correlations associated with the tensor terms shin dramatically the strengths of （Ylσ）λ = l？1 and （Ylσ）λ = 1 modes upward and downward, respectively, and also shift the strengths of （Ylσ）λ = l ＋ 1 modes upward. The coupling between （Yl = λ ？ 1σ）λ and （Yl = λ ＋ 1σ）λ modes arising from the tensor correlation is noticeable. The RPA tensor correlations produce strengths of SD and SQ modes, which are distributed in a much wider energy range, and the （Ylσ）λ = l ？ 1 modes dominate the high energy part of the strength functions. These energy shifts and coupling effects of different modes can be understood qualitatively by expressing a finite range tensor force in a separable form.

关键词：自旋相关张量 Skyrme相互作用激励多极收费能量范围耦合效应

SMEFT is falsifiable through multi-Higgs measurements(even in the absence of new light particles)

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Communications in Theoretical Physics 2023年第9期75卷 69-74页

作者： Raquel Gómez-Ambrosio Felipe J Llanes-Estrada Alexandre Salas-Bernárdez Juan J Sanz-Cillero dipartimento di Fisica Univ.di Torinoand INFNSezione di TorinoVia P.Giuria 1Torino10125Italy 2Univ.Complutense de MadridDept.Fisica Teorica and IPARCOSPlaza de las Ciencias 1Madrid28040Spain

By embedding the Standard Model effective field theory(SMEFT) in the more general Higgs effective field theory(HEFT), we expose correlations among the coefficients of the latter that, if found to be violated in future data, would lead to the experimental falsification of the SMEFT framework. These are derived from the necessary symmetric point of HEFT and analyticity of the SMEFT Lagrangian that allows the construction of the SMEFT expansion, as laid out by other groups, and properties at that point of the Higgs-flare function F(h) coupling Goldstone and Higgs bosons, of the Higgs potential V(h) and of the Higgs-top quark coupling function G(h).

关键词： SMEFT HEFT EFT effective field theories electroweak LHC quantum field theories

Lactobionic Acid as a New Synergist in Combination with Phosphonate-Zn(Ⅱ)System for Corrosion Inhibition of Carbon Steel

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Journal of Materials Science & Technology 2014年第1期30卷 77-89页

作者： S.Srinivasa Rao B.V.Appa Rao S.Roopas Kiran B.Sreedhar Department of Chemistry V.R.Siddhartha Engineering College(Autonomous) Department of Chemistry National Institute of Technology Warangal(NITW) infn Sezione di Padova Inorganic & Physical Chemistry division Indian Institute of Chemical Technology(IICT)

Studies on lactobionic acid introduced as a synergist in the presence of phosphonobutane-1,2,4-tricarboxylic acid （PBTC） and zinc ions for corrosion control of carbon steel in aqueous environment are presented. The investigations revealed that lactobionic acid （LBA） acts as an excellent synergist in corrosion inhibition. Optimum concentrations of all the three components of the ternary formulation are established by gravimetric studies. Potentiodynamic polarization studies indicate that the new ternary system is a mixed inhibitor. Impedance studies show that a protective film is formed on the metal surface in the presence of the inhibitor formulation. The film is found to exhibit its protective nature even at higher temperatures up to 60 ~C. Analysis of the protective film by X-ray photoelectron spectroscopy （XPS） and reflection absorption Fourier transform infrared （FTIR） spectroscopy infers the presence of Zn（OH）2, oxides and hydroxides of iron and the inhibitor molecules in the surface film probably in the form of a complex, [Zn（II）-PBTC-LBA]. The morphological studies by scanning electron microscopy （SEM） and the topographical studies by atomic force microscopy （AFM） also indicate the presence of protective film on the metal surface. A plausible mechanism of corrosion inhibition is proposed.

关键词： Corrosion inhibitor Carbon steel Synergism X-ray photoelectron spectroscopy Electrochemical impedance spectroscopy