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世界地震译丛 2011年第4期42卷 59-64页

作者： J. d. Jansen d. Fabel P. bishop S. Xu C. Schnabel A. T. Codilean 孙昌斌（译）李德文（校）不详中国地震局地壳应力研究所

在有相对基准面下降良好约束记录的苏格兰西部的4条河流中,冰后期基岩侵蚀的速率可以通过测量溯源裂点以下侵蚀宽谷阶地原地宇宙成因10Be浓度确定。10Be暴露年龄的沿程坡降显示两个不同的趋势:向上游趋于年轻和一致的年龄,对此我们解释... 详细信息

在有相对基准面下降良好约束记录的苏格兰西部的4条河流中,冰后期基岩侵蚀的速率可以通过测量溯源裂点以下侵蚀宽谷阶地原地宇宙成因10Be浓度确定。10Be暴露年龄的沿程坡降显示两个不同的趋势:向上游趋于年轻和一致的年龄,对此我们解释为裂点后退和扩散搬运限制性下切的结果。我们发现,开始基岩河床下切和宽谷阶地的区域发育始于末次冰消期(距今11.5ka)不久,裂点后退速率在早—中全新世达到最大,之后不断下降达两个数量级,在晚全新世降到一个与单位河床面积流能无关的低速率。我们推断这种区域性的冰后期裂点后退变缓是全新世期间冰缘沉积物补给逐渐减少、导致基岩侵蚀缺乏"工具"的结果。我们的研究结果表明,主河流侵蚀时期可能与冰川旋回一致,冰期—间冰期过渡之后沉积物的减少可能是冰川作用区河流基岩侵蚀速率变化的重要原因。

关键词：沉积物退变补给冰缘河流侵蚀 ^10Be 暴露年龄河床下切

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轻稀土区Nd和Ce核的超形变带

高能物理与核物理 1989年第7期13卷 632-641页

作者：罗亦孝钟纪泉 A.Kirwan d.J.G.Love P.J.Nolan R.Wadsworth P.J.bishop M.J.Godfrey R.Hughes A.N.James I.Jenkins S.M.Mullins J.Simpson d.J.Thornley K.L.Ying 中国科学院近代物理研究所 Oliver Lodge Lab. University of Liverpool PO Box 147 Liverpool L69 3BX U. K. SERC daresbury Lab. Warrington W A4 4Ad U. K. department of Physics University of York Heslington York Y01 5DD U. K.

轻稀土区高自旋超形变的系统实验研究,首次发现了~133,134,137)Nd和^(131)Ce的超形变带,并证实和进一步研究了前已发现的^(135,136)Nd和^(132)Ce超形变带.本文叙述超形变带的实验寻找、指定和测量,并对所发现的超形变带的馈入、退激、... 详细信息

轻稀土区高自旋超形变的系统实验研究,首次发现了~133,134,137)Nd和^(131)Ce的超形变带,并证实和进一步研究了前已发现的^(135,136)Nd和^(132)Ce超形变带.本文叙述超形变带的实验寻找、指定和测量,并对所发现的超形变带的馈入、退激、转动惯量、相对强度和结构的系统性进行了讨论.

关键词：轻稀土区原子核超形变带钕铈

Traumatic injury is associated with reduced deoxyribonuclease activity and dysregulation of the actin scavenging system

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Burns & Trauma 2021年第1期9卷 558-572页

作者： Jon Hazeldine Robert J.dinsdale david N.Naumann Animesh Acharjee Jonathan R.B.bishop Janet M.Lord Paul Harrison Institute of Inflammation and Ageing University of BirminghamEdgbastonBirminghamWest MidlandsB152TTUnited Kingdom National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre Heritage BuildingQueen Elizabeth Hospital BirminghamMindelsohnWayEdgbastonBirminghamWest MidlandsB152THUnited Kingdom Scar Free Foundation Birmingham Centre for Burns Research University Hospital Birmingham Foundation TrustQueen Elizabeth Hospital BirminghamMindelsohnWayEdgbastonBirminghamWest MidlandsB152THUnited Kingdom Academic department of Military Surgery and Trauma Royal Centre for Defence MedicineQueen Elizabeth Hospital BirminghamMindelsohnWayEdgbastonBirminghamWest MidlandsB152THUnited Kingdom Institute of Cancer and Genomic Sciences Centre for Computational BiologyUniversity of BirminghamEdgbastonBirminghamWest MidlandsB152TTUnited Kingdom

Background:Traumatic injury is associated with increased concentrations of cell-free dNA(cfdNA)in the circulation,which contribute to post-injury *** endonuclease deoxyribonuclease 1(dNase-1)is responsible for removing 90%of circulating ***,dNase activity was reported to be significantly reduced following major non-traumatic brain injury(TBI),but the processes responsible were not ***,it is not known how quickly following injury dNase activity is reduced and whether this also occurs after ***:At 3 post-injury time points(≤1,4–12 and 48–72 hours),blood samples were obtained from 155 adult trauma patients that had sustained an isolated TBI(n=21),TBI with accompanying extracranial injury(TBI^(+))(n=53)or an extracranial injury only(ECI)(n=81).In addition to measuring cfdNA levels and the activity and expression of dNase,circulating concentrations of monomeric globular action(G-actin),an inhibitor of dNase-1,and the actin scavenging proteins gelsolin(GSN)and vitamin d binding protein(VdBP)were determined and values compared to a cohort of healthy ***:Significantly elevated concentrations of plasma cfdNA were seen in TBI,TBI^(+)and ECI patients at all study time points when compared to healthy *** levels were significantly higher at≤1 hour post-injury in ECI patients who subsequently developed multiple organ dysfunction syndrome when compared to those who did *** dNase-1 protein was significantly elevated in all patient groups at all sampling time *** contrast,dNase enzyme activity was significantly reduced,with this impaired function evident in TBI^(+)patients within minutes of *** concentrations of G-actin were elevated in all patient cohorts in the immediate aftermath of injury and this was accompanied by a significant reduction in the levels of GSN and ***:The post-traumatic increase in circulating cfdNA that occurs following extracranial trauma and TBI

关键词： Cell-free dNA deoxyribonuclease Extracellular actin scavenging system Pre-hospital Trauma

Neutron and Alpha Structure in Neutron deficient Nuclei in Astrophysics

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原子核物理评论 2016年第2期33卷 212-216页

作者： S.Kubono 何建军 H.Yamaguchi d.M.Kahl S.Hayakawa T.Teranishi S.Cheribini M.Gulino Y.K.Kwon T.Hashimoto Y.Wakabayashi N.Iwasa S.Kato T.Komatsubara d.N.Binh L.H.Khiem N.N.duy T.Kawabata C.Spitaleri G.G.Rapisarda M.La Cognata L.Lamia R.G.Pizzone S.Romano A.Coc N.de Sereville F.Hammache G.Kiss S.bishop Institute of Modern Physics Chinese Academy of Sciences RIKEN Nishina Center Center for Nuclear Study University of Tokyo department of Physics Kyushu University Laboratori Nazionali del Sud Istituto Nazionale di Fisica Nucleare Institute for Basic Science 70Yuseong-daero 1689-gil RIKEN Nishina Center 2-1 Hirosawa department of Physics Tohoku University department of Physics Yamagata University Institute of Physics Vietnam Academy for Science and Technology department of Physics Kyoto University IN2P3 Institute for Nuclear Research (MTA-ATOMKI) TUM

The paper includes discussions on the important role of neutron and alpha configurations in proton-rich nuclei in nuclear astrophysics in terms of nucleosynthesis under extremely high-temperature hydrogenburning conditions. The νp-process, which is supposed to take place at the very early epoch of type II supernovae, has considerable neutrons and alphas together with protons. The alpha-induced reactions on proton-rich unstable nuclei in the light mass regions is expected to play a crucial role, but very few of them were investigated well yet because of the experimental difficulties. Specifically, I report our recent experimental effort for the breakout process from the pp-chain region,~7Be(α, γ)^(11)C(α,p)^(14)N under the νp-process. The neutron-induced reactions on proton-rich nuclei, which is even more a challenging subject, were investigated previously for very few nuclei. One possible experimental method is the Trojan Horse Method(THM). We successfully have applied THM to the ^(18)F(n,α)^(14)N reaction study with an unstable beam of ^(18)F.

关键词： alpha-and neutron-induced stellar reactions in proton-rich nuclear region νp-process pp-chain breakout nuclear cluster structures in astrophysics low-energy RI beam

dielectric dispersion and thermodynamic behavior of stearic acid binary mixtures with alcohol as co-solvent using time domain reflectometry

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Journal of Advanced dielectrics 2017年第4期7卷 34-40页

作者： M.Maria Sylvester T.Ganesh d.J.S.Anand Karunakaran P.Senthilkumar Praveen G.Hudge A.C.Kumbharkhane PG&Research department of Physics Bishop Heber CollegeBharthidasan University Tiruchirapalli 620017Tamil NaduIndia PG&Research department of Physics Rajah Serfoji Government College Bharthidasan University Thanjavur 613005Tamil NaduIndia department of Physics Saranathan College of Engineering Tiruchirapalli 620012Tamil NaduIndia department of Physics S.I.C.E.Society's Degree College of Arts Science and CommerceAmbernathThaneMaharashtraIndia School of Physical Sciences Swami Ramanad Teerth Marthwada University NandedMaharashtraIndia

dielectric permittivity and relaxation dynamics of binary and ternary mixture of stearic acid on various concentration and their thermodynamic effects are *** static dielectric constant(ε_(0)),dielectric permittivity(ε′)and dielectric loss(ε″)are found by bilinear *** relaxation time(τ),dielectric strength(Δε)and the excess permittivity(ε^(E))are *** thermodynamic parameters such as enthalpy(ΔH),entropy(ΔS)and Gibb's free energy(ΔG)are *** significant changes in dielectric parameters are due to the intramolecular and intermolecular interactions in response to the applied *** permittivity spectra of stearic acid–alcohol in the frequency range of 10MHz to 30 GHz have been measured using picoseconds Time domain Reflectometry(TdR).The dielectric parameters(ε_(0),ε′,ε″)are found by bilinear calibration *** of temperature in intermolecular interaction and the relaxation process are also *** FT-IR spectral analysis reveals that the conformation of functional groups and formation for hydrogen bonding are present in both binary and ternary mixtures of stearic acid.

关键词： TdR dielectric relaxation stearic acid thermodynamic parameters FT-IR

一种单线全周式扫描激光雷达的应用及与同类传感器的比较

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长春理工大学学报（自然科学版） 2018年第1期41卷 1-4页

作者：王世峰都凯悦许庭赫马克·贝肖朱勇王锐长春理工大学光电工程学院长春130022 Ocular Robotics 澳大利亚悉尼2208

在建筑测绘、地形勘测、军事侦查等应用任务中,通常使用单线/多线激光雷达进行空间扫描来实现被测目标的三维空间重构。主要介绍了一种具有360°水平和俯仰±35°的全周扫描单线激光雷达RobotEye RE05,其不但可以设置水平和俯仰扫描分... 详细信息

在建筑测绘、地形勘测、军事侦查等应用任务中,通常使用单线/多线激光雷达进行空间扫描来实现被测目标的三维空间重构。主要介绍了一种具有360°水平和俯仰±35°的全周扫描单线激光雷达RobotEye RE05,其不但可以设置水平和俯仰扫描分辨率角,还可以针对感兴趣区域进行针对性往复扫描,从而实现室内或室外的三维重构或目标探测。首先简要介绍了业内常见的激光雷达,并与RobotEye RE05进行参数差异比较;然后描述了RobotEye RE05激光雷达的工作特性和三种扫描方式,通过多方面比较证明了该新型激光雷达在应用性能方面的显著提高。

关键词：激光雷达全周扫描三维重构

Search for the rare decay B^(0)→J/ψФ

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Chinese Physics C 2021年第4期45卷 47-60页

作者： R.Aaij C.Abellin Beteta T.Ackernley B.Adeva M.Adinolfi H.Afsharnial C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmaver J.J.Back S.Baker P.Baladron Rodriguez V.Balagura W.Baldinit J.Baptista Leite R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschis I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy *** d.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti M.O.Bettler Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker S.Bifani P.Billoir M.Birch F.C.R.bishop A.Bizzeti M.Biorn M.P.Blago T.Blake F.Blanc S.Blusk d.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguezs M.Brodski J.Brodzicka A.Brossa Gonzalo d.Brundu A.Buonaura C.Burr A.Burschee A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero diaz S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana d.H.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbonel G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral B.Couturier d.C.Craik J.Crkovska M.Cruz Centro Brasileiro de Pesquisas Fisicas(CBPF) Riode JaneiroBrazil Universidade Federal do Riode Janeiro(UFRJ) Riode JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BejingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Universitq Paris-Saclay CNRS/IN2P3IJCLabOrsayFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut fir Kernphysik(MPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Bari BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferrara FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN Laboratori Nazionali di Frascati Frascatiltaly INFN Sezione di Genova GenovaItaly INFN Sezione di Milano Bicocca Milanolaly INFN Sezione di Milano MilanoItaly INFN Sezione di Cagliari Monserratoltaly Universita degli Studi di Padova Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma Tor Vergata RomaItaly INFN Sezione di Roma La Sapienza RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences KrakowPoland AGH-University of Science and Technology Faculty of Physics and Applied Computer Science

A search for the rare decay B^(0)→J/ψФis performed using Pp collision data collected with the LHCb dete-ctor at centre-of-mass energies of 7,8 and 13 TeV,corresponding to an integrated luminosity of9 *** significant signal of the decay is observed and an upper limitof 1.1x 10^(-7)at 90%confidence level is set on the branching fraction.

关键词： B physics flavour physics rare decay ω-Фmixing branching fraction

Pre-Induction Cervical Ripening Using a Transcervical Foley Catheter Combined with ISMN Vaginal Tablets for Vaginal Birth after Previous Caesarean Section (VBAC)—A Comparative Study

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Open Journal of Obstetrics and Gynecology 2021年第11期11卷 1524-1542页

作者： d. Liyanapatabandi J. Karunasinghe M. H. Ziard R. Prathapan S. I. Wickramasinghe Colombo South Teaching Hospital Kalubowila Sri Lanka Queensland Australia

Objective: To compare the effectiveness, safety and client acceptability of concurrent application of transcervical Foley catheter with vaginal ISMN-sustained release (SR) 60 mg tablet versus transcervical Foley catheter alone for pre-induction cervical ripening in women who are undergoing Vaginal birth after C-section (VBAC). Method: A prospective single blind randomized control study was carried out including 110 pregnant women who had unfavorable cervix (MBS less than 6) at 40 weeks and 3 days of gestation. The two groups received either the trans-cervical foley catheter with a vaginal ISMN 60 mg sustained release (SR) tablet on 40 weeks and 3 days (Treatment arm 1, n = 57), or trans-cervical Foley alone on 40 weeks and 3 days (Treatment arm 2, n = 53). Results: At 40 weeks + 3 days gestation, the mean age, mean parity and the mean modified.bishop Score (MBS) were comparable among the two treatment groups. Majority (n = 98, 89.1%) remained without spontaneously establishing labour at 24 hours of intervention. The difference in mean MBS at 40 weeks + 4 days (24-hours following the intervention) in the two groups was statistically not significant (P > 0.05). The group who received concurrent ISMN vaginal tablets achieved a higher number of successful VBACs (n = 33, 62.3%) over the group who received the Foley catheter only m

关键词： Isosorbide Mononitrate (MeSH) Vaginal Birth After a Cesarean (MeSH) In-duced Labor (MeSH)

Search for the doubly heavy baryons Ωbc0 and Ξbc0 decaying to Λc+π- and Ξc+π-

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Chinese Physics C 2021年第9期45卷 14-25页

作者： R.Aaij C.Abellán Beteta T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista Leite R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy *** d.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker S.Bifani P.Billoir M.Birch F.C.R.bishop A.Bitadze A.Bizzeti M.Bj?rn M.P.Blago T.Blake F.Blanc S.Blusk d.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa Gonzalo d.Brundu A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero diaz S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral B.Couturier d.C.Craik J.Crkovská M.Cruz Torres R.Currie C.L.da Silva E.dall'Occo J.dalseno C.d'Amb University of Edinburgh Horia Hulubei National Institute of Physics and Nuclear Engineering INFN Sezione di Bari Università di Bari Los Alamos National Laboratory (LANL) Van Swinderen Institute University of Groningen Universiteit Maastricht AGH-University of Science and Technology Faculty of Physics and Applied Computer Science Université Clermont Auvergne Università di Cagliari Institute for Nuclear Research of the National Academy of Sciences (KINR) School of Physics University College dublin NSC Kharkiv Institute of Physics and Technology (NSC KIPT) INFN Sezione di Perugia STFC Rutherford Appleton Laboratory School of Physics and Astronomy Monash University Novosibirsk State University CNRS/IN2P3 department of Physics and Astronomy Uppsala University Università di Genova School of Physics State Key Laboratory of Nuclear Physics and Technology Peking University National Center for Nuclear Research (NCBJ) Università di Roma Tor Vergata Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Universidade Federal do Triangulo Mineiro (UFTM) Institute of Particle Physics LPC Central China Normal University Hangzhou Institute for Advanced Study UCAS Instituto de Fisica Corpuscular Centro Mixto Universidad de Valencia-CSIC Nikhef National Institute for Subatomic Physics and VU University Amsterdam National Research Tomsk Polytechnic University AGH-University of Science and Technology Faculty of Computer Science Electronics and Telecommunications University of Michigan Università di Siena Università di Padova Scuola Normale Superiore National Research Centre Kurchatov Institute Università degli Studi di Milano MSU-Iligan Institute of Technology (MSU-IIT) Università di Firenze INFN Sezione di Roma La Sapienza Institut für Physik Universit?t Rostock INFN Sezione di Milano departamento de Fisica Universidad Nacional de Colombia Universit?t Bonn-Helmholtz-Institut für Strahlen und Kernphysik Hanoi University of Science Università di Pisa P.N. Lebedev Physical Institute Russian Academy of Science (LPI RAS) Università

The first search for the doubly heavy Ωbc0baryon and a search for the Ξbc0baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV,corresponding to an integrated luminosity of 5.2 *** baryons are reconstructed via their decays to ∧c+π-andΞc+π-.No significant excess is found for invariant masses between 6700 and 7300 MeV/c2,in a rapidity range from2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/*** limits are set on the ratio of the Ωbc0andΞbc0production cross-section times the branching fraction to ∧c+π-（Ξc+π-） relative to that of the ∧b0（Ξb0） baryon,for different lifetime hypotheses,at 95% confidence *** upper limits range from 0.5×10-4to 2.5×10-4for theΩbc0→∧c+π-(Ξbc0→∧c+π-) decay,and from 1.4×10-3to 6.9×10-3for the Ωbc0→Ξc+π-(Ξbc0→Ξc+π-) decay,depending on the considered mass and lifetime of the Ωbc0(Ξbc0) baryon.

关键词： B physics quarkonium spectroscopy heavy quark production