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Analytical modelling of the expansion of a solid obstacle interacting with a radiative shock

High Power laser Science and Engineering 2018年第2期6卷 123-132页

作者： th.Michel E.Falize B.Albertazzi G.Rigon Y.Sakawa t.Sano H.Shimogawara R.Kumar t.Morita C.Michaut A.Casner R Barroso P.Mabey Y.Kuramitsu S.laffite l.van Box Som G.Gregori R.Kodama N.Ozaki P.tzeferacos D.lamb M.Koenig luli-cnrs ecole polytechniquecea:universite paris-saclayupmc univ paris 06:sorbonne universites-f-91128 palaiseau cedexFrance cea damdifF-91297 ArpajonFrance cea saclay dsm/irfu/service d'astrophysiqueF-91191 Gif-sur-YvetteFrance institute of laser engineering osaka universitySuitaOsaka 565-0871Japan faculty of engineering sciences kyushu university6-1 Kasuga-KoenKasugaFukuoka 816-8580Japan luth observatoire de parispsl research universitycnrsuniversite paris diderotSorbonne Paris Cite92190 MeudonFrance universite de bordeaux-cnrs-cea celia UMR 5107F-33405 TalenceFrance gepi observatoire de parispsl research universitycnrsuniversite paris diderotSorbonne Paris Cite75014 ParisFrance graduate school of engineering osaka universitySuitaOsaka 565-0871Japan lerma observatoire de parispsl research universitycnrssorbonne universitesUPMC Univ.Paris 06F-75005 ParisFrance clarendon laboratory university of oxfordParks RoadOxford OX1 3PUUK flash center for computational science university of chicagoIL 60637USA

In this paper, we present a model characterizing the interaction of a radiative shock(RS) with a solid material, as described in a recent paper(Koenig et al., Phys. Plasmas, 24, 082707(2017)), the new model is then related to recent experiments performed on the GEKKO XII laser facility. the RS generated in a xenon gas cell propagates towards a solid obstacle that is ablated by radiation coming from the shock front and the radiative precursor, mimicking processes occurring in astrophysical phenomena. the model presented here calculates the dynamics of the obstacle expansion,which depends on several parameters, notably the geometry and the temperature of the shock. All parameters required for the model have been obtained from experiments. Good agreement between experimental data and the model is found when spherical geometry is taken into account. As a consequence, this model is a useful and easy tool to infer parameters from experimental data(such as the shock temperature), and also to design future experiments.

关键词： high energy density physics laser–plasmas interaction modelling plasmas astrophysics plasma physics radiative hydrodynamics radiative shock

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Calculation of the ex-core neutron noise induced by individual fuel assembly vibrations in two PWR cores

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Nuclear Science and techniques 2016年第4期27卷 67-77页

作者： Kiet A.t.Hoang van-Chung Cao van-Khanh Hoang hoai-nam tran Institute of Research and Development Duy Tan University K7/25 Quang Trung Da Nang Vietnam American Polytechnic College Trung Son KDC Binh Chanh HCMC Vietnam Research and Development Center for Radiation technology VINATOM Thu Duc HCMC Vietnam Faculty of Physics and Engineering Physics VNUHCM University of Science HCMC Vietnam Institute for Nuclear Science and technology VINATOM 179 Hoang Quoc Viet Hanoi Vietnam

Calculation of the neutron noise induced by fuel assembly vibrations in two pressurized water reactor(PWR) cores has been conducted to investigate the effect of cycle burnup on the properties of the ex-core detector noise. An extension of the method and the computational models of a previous work have been applied to two different PWR cores to examine a hypothesis that fuel assembly vibrations cause the corresponding peak in the auto power spectral density(APSD) increase during the cycle. Stochastic vibrations along a random two-dimensional trajectory of individual fuel assemblies were assumed to occur at different locations in the cores. two models regarding the displacement amplitude of the vibrating assembly have been considered to determine the noise source. then, the APSD of the ex-core detector noise was evaluated at three burnup steps. the results show that there is no monotonic tendency of the change in the APSD of ex-core detector; however, the increase in APSD occurs predominantly for peripheral assemblies. When assuming simultaneous vibrations of a number of fuel assemblies uniformly distributed over the core, the effect of the peripheral assemblies dominates the ex-core neutron *** behaviour was found similar in both cores.

关键词：燃料组件随机振动中子噪声计算模型压水堆堆芯功率谱密度压水反应堆

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In vivo measurement of NADH fluorescence lifetime in skeletal muscle via -ber-coupled time-correlated single photon counting

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Journal of Innovative Optical Health Sciences 2024年第1期17卷 121-134页

作者： Kathryn M.Priest Jacob V.Schluns Nathania Nischal Colton l.Gattis Jeffrey C.Wolchok timothy J.Muldoon Department of Biomedical Engineering University of Arkansas FayettevilleARUSA

Nicotinamide adenine dinucleotide(NADH)is a cofactor that serves to shuttle electrons during metabolic processes such as glycolysis,the tricarboxylic acid cycle,and oxidative phosphorylation(OXPHOS).NADH is autofluorescent,and itsfluorescence lifetime can be used to infer metabolic dynamics in living ***-coupled time-correlated single photon counting(tCSPC)equipped with an implantable needle probe can be used to measure NADH lifetime in vivo,enabling investigation of changing metabolic demand during muscle contraction or tissue *** study illustrates a proof of concept for point-based,minimally-invasive NADHfluorescence lifetime measurement in *** muscle loss(VMl)injuries were created in the left tibialis anterior(tA)muscle of male Sprague Dawley *** lifetime measurements were collected before,during,and after a 30 s tetanic contraction in the injured and uninjured tA muscles,which was subsequently-t to a biexponential decay model to yield a metric of NADH utilization(cytoplasmic vs protein-bound NADH,the A11/A22 ratio).On average,this ratio was higher during and after contraction in uninjured muscle compared to muscle at rest,suggesting higher levels of free NADH in contracting and recovering muscle,indicating increased rates of *** injured muscle,this ratio was higher than uninjured muscle overall but decreased over time,which is consistent with current knowledge of inflammatory response to injury,suggesting tissue regeneration has *** data suggest that-ber-coupled tCSPC has the potential to measure changes in NADH binding in vivo in a minimally invasive manner that requires further investigation.

关键词： Glycolysis oxidative phosphorylation energy metabolism volumetric muscle loss

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Semiotics and political discourse in the post-truth era

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language and Semiotic Studies 2024年第1期10卷 65-82页

作者： BetülÇanakpınar Murat Kalelioğlu V.Doğan Günay Istinye University IstanbulTürkiye School of Foreign languages T C Mardin Artuklu UniversityMardinTürkiye Faculty of literature Department of LinguisticsDokuz Eylül UniversityIzmirTürkiye

the concept of post-truth has been on the world’s agenda since *** this concept,which is frequently encountered in political life,provides the speaker with a freer speaking ***,instead of presenting the reality to their constituents as it is,want to reshape this reality according to their own ideology and present it to the *** have certain objectives in creating such a virtual *** aims can be listed as keeping the voters,increasing the voting potential,and attracting undecided voters to their *** common result of all these aims is to gain political power or to remain in the existing ***-truth reality is constructed relatively more easily in social media *** construction of reality can be through beliefs or *** such ways,the recipient is tried to be persuaded,and thus behavioral change is *** of the most necessary subjects for this artificial reality atmosphere is the *** idea that the anti-subject does not know the truth that we(you and I)know and believe and is trying to destroy it is the main theme of post-truth *** try to persuade the voters to believe in their own truth by expressing this idea to *** are many examples of this around the *** this study,firstly,the concept of post-truth is examined and its various definitions are *** distinctions between the concepts of real and truth are analyzed and then it is explained how and for what purposes the concept of post-truth is used in *** the comparison of post-truth and fake news,the concept is discussed within the framework of sender-receiver interaction in terms of *** concept is tried to be elucidated with the modalities such as/convincing/,/believing/,/being/,/appearing/.Besides,using the semiotic square,the study also tries to reveal the different purposes and forms of use of the concept of *** a result,it has been observed

关键词： semiotics discourse politics post-truth fake news

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青藏高原及其周边古近纪综合地层、生物群与古地理演化

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中国科学：地球科学 2024年第4期54卷 1308-1342页

作者：刘佳宋艾丁林苏涛周浙昆中国科学院西双版纳热带植物园热带森林生态学重点实验室勐腊666303 中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室南京210008 云南大学古生物研究院昆明650500 中国科学院青藏高原研究所地球系统科学与资源环境重点实验室北京100101

古近纪是陆地和海洋生态系统劫后复苏并逐渐接近其现代面貌的关键时期.在青藏高原及其周边区域,古近纪也是青藏高原-喜马拉雅造山带构造活动、亚洲气候重组、生物多样性演化的重要时期.限于研究条件、认识程度等的制约,青藏高原及其周... 详细信息

古近纪是陆地和海洋生态系统劫后复苏并逐渐接近其现代面貌的关键时期.在青藏高原及其周边区域,古近纪也是青藏高原-喜马拉雅造山带构造活动、亚洲气候重组、生物多样性演化的重要时期.限于研究条件、认识程度等的制约,青藏高原及其周边地区在地层划分方面还存在诸多争议.近年来,该区域开展了大量的沉积岩石学、磁性地层学、同位素年代学等工作,发现和报道了大量各种门类的化石,更系统地深化了生物地层学研究,为梳理青藏高原及其周边古近纪综合地层、生物群和古地理演化打下了坚实的基础.本文基于国际古近系划分和对比标准,以岩石地层和生物地层为基础,综合近年来同位素年代学、磁性地层学和地球化学等研究工作,在前人工作基础上梳理青藏高原及其周边不同构造单元的地层划分与对比框架.第二次青藏高原综合科学考察开展以来,古近纪植物群相关研究逐渐丰富.依据这些植物群最新的年代结果,本文讨论了灭绝类群和新出现类群的生物地层意义.对“桉属”、棕榈科等化石类群的新认识将古近纪青藏地区植物区系与冈瓦纳大陆的大洋洲、南美洲生物区系建立联系.雅鲁藏布江缝合带两侧植物群重要类群的演化历史也指示印度板块和欧亚大陆的碰撞时间在约65~54Ma.植物群的古高程重建结果表明,横断山区在早渐新世之前就已经形成现今的地貌格局;古近纪青藏地区主要缝合带附近的温暖湿润低地是动植物类群交流的主要通道;古近纪低矮的喜马拉雅山脉不能对南来的印度洋水汽形成有效的阻隔作用.

关键词：青藏高原化石生物地层古环境古地理古近纪

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Immune response to inactivated bacterial vector carrying the recombinant K39 antigen of leishmania infantum in mice

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Asian Pacific Journal of tropical Biomedicine 2024年第5期14卷 199-206页

作者： lucelina S.Araújo Bruno B.Silva Eduarda N.F.N.Santos Arnaldo S.Bezerra Samuel S.Frota Assis R.Montenegro Eridan O.P.t.Florean Maurício Fvan tilburg Maria Izabel F.Guedes laboratory of Biotechnology and Molecular Biology Northeast Biotechnology NetworkState University of CearáFortalezaBrazil Faculty of Veterinary Medicine State University of CearáFortalezaBrazil

Objective:to evaluate the immunological response elicited by an inactivated bacterial vector carrying the K39 antigen of leishmania infantum,and a purified ***:Mice were subjected to the following treatments:(1)Purified recombinant K39(rK39)protein at a 20μg dose with complete Freund’s adjuvant;(2)Inactivated Escherichia coli(Bl21 DE3)carrying the K39 protein at an equivalent total protein content of 200μg;(3)Inactivated bacteria lacking the K39 protein;(4)Non-immunized control *** monitoring was *** groups were challenged by intraperitoneal injection of 10^(7) leishmania infantum *** euthanasia,the liver and spleen were collected to analyze the levels of tNF,IFN-γ,Il-12,Il-4,and ***:Mice immunized with purified rK39 or the inactivated bacterial vector carrying the K39 antigen of leishmania infantum showed a long-lasting immune response with high levels of polyclonal antibodies specifically recognizing the recombinant *** IgG1 subclass was the predominant immunoglobulin;however,the induction of IgG2a and the profile of cytokines produced were indicative of the induction of a mixed-type ***:the inactivated bacterial vector carrying the K39 antigen,as well as the purified antigen can induce a long-lasting immune response in immunized mice,predominantly favouring a th2 profile response.

关键词： Visceral leishmaniasis K39 Inactivated bacterial vector Vaccine Immune response th1 th2 leishmania infantum

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Chitin-glucan improves important pathophysiological features of irritable bowel syndrome

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World Journal of Gastroenterology 2024年第16期30卷 2258-2271页

作者： Caroline Valibouze Caroline Dubuquoy Philippe Chavatte Michaël Genin Veronique Maquet Salvatore Modica Pierre Desreumaux Christel Rousseaux Department of Digestive Surgery and transplantation Lille UniversityLille 59037France Intestinal Biotech Development Facultéde MédicineLille 59045France U1286-INFINItE-Institute for translational Research in Inflammation Universitéde LilleLille 59000France UlR 2694-MEtRICS Évaluation des Technologies de santéet des Pratiques MédicalesUniversity of LilleLille 59000France KitoZyme SA Institution SociétéAnonymeZone 2Parc des Hauts SartsRue de MilmortHerstal 4040Belgium Hepato-Gastroenterology Department Lille University HospitalLille 59037France

BACKGROUND Irritable bowel syndrome(IBS)is one of the most frequent and debilitating conditions leading to gastroenterological ***,recommended treatments remain limited,yielding only limited therapeutic ***-glucan(CG)is a novel dietary prebiotic classically used in humans at a dosage of 1.5-3.0 g/d and is considered a safe food ingredient by the European Food Safety *** provide an alternative approach to managing patients with IBS,we performed preclinical molecular,cellular,and animal studies to evaluate the role of chitin-glucan in the main pathophysiological mechanisms involved in *** to evaluate the roles of CG in visceral analgesia,intestinal inflammation,barrier function,and to develop computational molecular *** Visceral pain was recorded through colorectal distension(CRD)in a model of long-lasting colon hypersensitivity induced by an intra-rectal administration of tNBS[15 milligrams(mg)/kilogram(kg)]in 33 Sprague-Dawley *** pressure was regularly assessed during the 9 wk-experiment(weeks 0,3,5,and 7)in animals receiving CG(n=14)at a human equivalent dose(HED)of 1.5 g/d or 3.0 g/d and compared to negative control(tap water,n=11)and positive control(phloroglucinol at 1.5 g/d HED,n=8)*** anti-inflammatory effect of CG was evaluated using clinical and histological scores in 30 C57bl6 male mice with colitis induced by dextran sodium sulfate(DSS)administered in their drinking water during 14 ***-29 cells under basal conditions and after stimulation with lipopolysaccharide(lPS)were treated with CG to evaluate changes in pathways related to analgesia μ-opioid receptor(MOR),cannabinoid receptor 2(CB2),peroxisome proliferator-activated receptor alpha,inflammation[interleukin(Il)-10,Il-1b,and Il-8]and barrier function[mucin 2-5AC,claudin-2,zonula occludens(ZO)-1,ZO-2]using the real-time PCR *** modelling of CG,lPS,lipoteichoic acid(ltA),and phospholipomannan(PlM)was developed,and the abili

关键词： Chitin-glucan Irritable bowel syndrome Abdominal pain Inflammation Intestinal barrier Molecular modelling Microbial cell walls chelation

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Remodeling tumor Immune Microenvironment by Using Polymer-lipid-Manganese Dioxide Nanoparticles with Radiation therapy to Boost Immune Response of Castration-Resistant Prostate Cancer

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Research 2024年第3期2023卷 83-96页

作者： Abdulmottaleb E.Zetrini HoYin lip Azhar Z.Abbasi Ibrahim Alradwan taksim Ahmed Chunsheng He Jeffrey t.Henderson Andrew M.Rauth Xiao Yu Wu Advanced Pharmaceutics and Drug Delivery laboratory Leslie Dan Faculty of PharmacyUniversity of TorontoM5S 3M2TorontoONCanada. Departments of Medical Biophysics and Radiation Oncology University of TorontoM5G 1L7TorontoONCanada.

Despite substantial progress in the treatment of castration-resistant prostate cancer (CRPC), including radiation therapy and immunotherapy alone or in combination, the response to treatment remains poor due to the hypoxic and immunosuppressive nature of the tumor microenvironment. Herein, we exploited the bioreactivity of novel polymer–lipid manganese dioxide nanoparticles (PlMDs) to remodel the tumor immune microenvironment (tIME) by increasing the local oxygen levels and extracellular pH and enhancing radiation-induced immunogenic cell death. this study demonstrated that PlMD treatment sensitized hypoxic human and murine CRPC cells to radiation, significantly increasing radiation-induced DNA double-strand breaks and ultimately cell death, which enhanced the secretion of damage-associated molecular patterns, attributable to the induction of autophagy and endoplasmic reticulum stress. Reoxygenation via PlMDs also polarized hypoxic murine RAW264.7 macrophages toward the M1 phenotype, enhancing tumor necrosis factor alpha release, and thus reducing the viability of murine CRPC tRAMP-C2 cells. In a syngeneic tRAMP-C2 tumor model, intravenous injection of PlMDs suppressed, while radiation alone enhanced recruitment of regulatory t cells and myeloid-derived suppressor cells. Pretreatment with PlMDs followed by radiation down-regulated programmed death-ligand 1 and promoted the infiltration of antitumor CD8+ t cells and M1 macrophages to tumor sites. taken together, tIME modulation by PlMDs plus radiation profoundly delayed tumor growth and prolonged median survival compared with radiation alone. these results suggest that PlMDs plus radiation is a promising treatment modality for improving therapeutic efficacy in radioresistant and immunosuppressive solid tumors.

关键词： RAW264.7 alone treatment

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Interaction of photons with silver and indium nuclei at energies up to 20 MeV

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Chinese Physics C 2024年第2期48卷 135-140页

作者： J.H.Khushvaktov M.A.Demichev D.l.Demin S.A.Evseev M.I.Gostkin V.V.Kobets F.A.Rasu-lova S.V.Rozov E.t.Ruziev A.A.Solnyshkin t.N.tran E.A.Yakushev B.S.Yuldashev Joint Institute for Nuclear Research(JINR) DubnaRussia Institute of Nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan(INP ASRU) TashkentUzbekistan Institute of Physics of the Vietnam Academy of Science and technology(IP VASt) HanoiVietnam

the yields of photonuclear reactions in the 107Ag,113In,and 115In nuclei were *** Carlo simulations were performed using the Geant4 code,and the results were compared with the experimental *** isomeric ratios of the yields in the reactions 107Ag(γ,n)106m,gAg and 113In(γ,m)112m,gIn were determined,and the cross sections for the reactions 107Ag(γ,n)106gAg and 107Ag(γ,2n)105Ag at an energy of 20 MeV were calculated based on the experimental data.

关键词： 107Ag(γ,n)10mgAg and I13In(γ,n)12m-2In reactions cross section yield isomeric ratio simula-tion Geant4 tAlYS

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Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Physics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.l.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen M.l.Chen S.J.Chen S.l.Chen S.M.Chen t.Chen X.R.Chen X.t.Chen Y.B.Chen Y.Q.Chen Z.J.Chen Z.Y.Chen S.K.Choi X.Chu G.Cibinetto F.Cossio J.J.Cui H.l.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli l.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.t.Feng K.Fischer M.Fritsch C.D.Fu J.l.Fu Y.W.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia P.t.Ge Z.W.Ge C.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding J.Dong l.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Z.H.Duan P.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetzen l.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.t.Gu C.Y.Guan Z.l.Guan A.Q.Guo l.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.l.Han t.t.Han X.Q.Hao F.A.Harris K.K.He K.l.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold t.Holtmann P.C.Hong G.Y.Hou X.t.Hou Y.R.Hou Z.l.Hou B.Y.Hu H.M.Hu J.F.Hu t.Hu Y.Hu G.S.Huang K.X.Huang l.Q.Huang X.t.Huang Y.P.Huang t.Hussain F.H\"olzken N.H\"usken N.in der Wiesche M.Irshad J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.l.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang t.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing t.Johansson S.Kabana N.Kalantar-Nayestanaki X.l.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.lane P.larin l.lavezzi t.t.lei Z.H.lei H.leithoff M.lellmann t.lenz C.li C.li C.H.li Cheng li D.M.li F.li G.li H.li H.B.li H.J.li H.N.li Hui li J.R.li J.S.li K.li l.J.li l.K.li lei li M.H.li P.R.li Q.M.li Q.X.li R.li S.X.li t.li W.D.li W.G.li X.li X.H.li X.l.li X.Y.li Y Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China Central South University Changsha 410083China China Center of Advanced Science and technology Beijing 100190China China University of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMSAtS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Science and technology Luoyang 471003China Henan University of technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).the fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis CP-even fraction

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