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Mental Rock Climbing Cafe

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城市漫步（GBA版） 2023年第11期 32-33页

作者： ben Price 不详

In Huanghua town,Qingyuan,those who know seek the Mental Rock Climbing Café.Established in 2017,this climber's getaway can be found close to some popular local outdoor climbing spots(白璧the Wizard of Oz,大庙Big Temp... 详细信息

关键词： Wizard Mental spots

Feature Selection with Optimal Stacked Sparse Autoencoder for Data Mining

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Computers, Materials & Continua 2022年第8期72卷 2581-2596页

作者： Manar Ahmed Hamza Siwar ben Haj Hassine Ibrahim Abunadi Fahd N.Al-Wesabi Hadeel Alsolai Anwer Mustafa Hilal Ishfaq Yaseen Abdelwahed Motwakel Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAl-Kharj16278Saudi Arabia Department of Computer Science College of Science and Arts at MahayilKing Khalid UniversityMuhayel Aseer62529Saudi Arabia Department of Information Systems Prince Sultan UniversityRiyadh11586Saudi Arabia Faculty of Computer and IT Sana’a UniversitySana’a61101Yemen Department of Information Systems College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversitySaudi Arabia

Data mining in the educational field can be used to optimize the teaching and learning performance among the *** recently developed machine learning(ML)and deep learning(DL)approaches can be utilized to mine the data *** study proposes an Improved Sailfish Optimizer-based Feature SelectionwithOptimal Stacked Sparse Autoencoder(ISOFS-OSSAE)for data mining and pattern recognition in the educational *** proposed ISOFS-OSSAE model aims to mine the educational data and derive decisions based on the feature selection and classification ***,the ISOFS-OSSAEmodel involves the design of the ISOFS technique to choose an optimal subset of ***,the swallow swarm optimization(SSO)with the SSAE model is derived to perform the classification *** showcase the enhanced outcomes of the ISOFSOSSAE model,a wide range of experiments were taken place on a benchmark dataset from the University of California Irvine(UCI)Machine Learning *** simulation results pointed out the improved classification performance of the ISOFS-OSSAE model over the recent state of art approaches interms of different performance measures.

关键词： Data mining pattern recognition feature selection data classification SSAE model

神经肌肉电刺激联合吞咽法治疗急性缺血性脑卒中后吞咽障碍的疗效分析

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第二军医大学学报 2018年第9期39卷 1052-1055页

作者：袁绘于龙娟谢珊查益邓本强吴涛海军军医大学(第二军医大学)长海医院脑血管病中心上海200433

目的探讨神经肌肉电刺激联合吞咽法对急性缺血性脑卒中后吞咽障碍患者的治疗效果。方法回顾性连续纳入2013年9月至2016年9月在我院脑血管病中心住院治疗的急性缺血性脑卒中后吞咽障碍患者104例。根据治疗方法分为对照组(31例)和治疗组(7... 详细信息

目的探讨神经肌肉电刺激联合吞咽法对急性缺血性脑卒中后吞咽障碍患者的治疗效果。方法回顾性连续纳入2013年9月至2016年9月在我院脑血管病中心住院治疗的急性缺血性脑卒中后吞咽障碍患者104例。根据治疗方法分为对照组(31例)和治疗组(73例),对照组给予常规脑血管病内科治疗,治疗组在常规脑血管病内科治疗基础上给予神经肌肉电刺激联合吞咽法治疗。比较两组治疗前后洼田饮水试验(WST)评分变化、肺部感染发生率、胃管拔除率等。结果两组患者年龄、性别、基线WST评分和住院天数等基线资料差异均无统计学意义(P均>0.05)。治疗后治疗组患者的WST评分小于对照组[(1.39±0.85)分vs(2.71±1.16)分,F=17.236,P<0.001],WST评分降低值大于对照组[(2.60±0.89)分vs(1.29±0.46)分,F=19.910,P<0.001],肺部感染发生率低于对照组[20.55%(15/73)vs 64.52%(20/31),χ~2=18.840,P<0.001],胃管拔除变化率高于对照组[52.05%(38/73)vs 25.81%(8/31),χ~2=6.078,P=0.014]。结论神经肌肉电刺激联合吞咽法治疗脑卒中后吞咽障碍,可有效改善急性缺血性脑卒中吞咽障碍患者的吞咽功能,降低肺部感染发生率。

关键词：神经肌肉电刺激吞咽障碍吞咽法急性缺血性脑卒中

围术期小剂量地塞米松对甲状腺肿瘤切除术后咽喉痛的预防作用

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上海交通大学学报（医学版） 2016年第6期36卷 870-874页

作者：张慧文樊友本陆捷伍波徐成周全红宁夏医科大学总院心血管病医院麻醉科银川750004 上海交通大学附属第六人民医院普外科上海200233 上海交通大学附属第八人民医院麻醉科上海200233

目的通过疼痛评分量表分析围术期小剂量地塞米松对甲状腺术后咽喉痛的预防作用。方法将符合纳入标准的甲状腺手术患者随机分为地塞米松组(n=103)和生理盐水组(n=130),分别于麻醉诱导时静脉注射0.1 mg/kg地塞米松或等体积的生理盐水。甲... 详细信息

目的通过疼痛评分量表分析围术期小剂量地塞米松对甲状腺术后咽喉痛的预防作用。方法将符合纳入标准的甲状腺手术患者随机分为地塞米松组(n=103)和生理盐水组(n=130),分别于麻醉诱导时静脉注射0.1 mg/kg地塞米松或等体积的生理盐水。甲状腺术后对患者切口痛及咽喉痛(静息痛及吞咽痛)进行视觉模拟评分(VAS),记录患者术后恶心呕吐的发生率,进行主诉疼痛分级法(VRS)评分。检测患者术前、术后血糖水平,观察术后切口是否发生感染。结果地塞米松组术后使用镇痛药物的患者比例(18.4%)明显低于生理盐水组(58.5%),差异具有统计学意义(P=0.000);地塞米松组术后使用止吐药物的患者比例(1.0%)低于生理盐水组(6.2%),差异具有统计学意义(P=0.041);地塞米松组术后第1日血糖明显高于生理盐水组(P=0.000),第2日回到基线水平;2组患者术后切口感染率比较,差异无统计学意义(P=0.848)。结论围术期小剂量地塞米松可以减轻甲状腺术后咽喉痛及切口痛,降低甲状腺术后恶心呕吐的发生率;甲状腺患者术后第1日血糖升高,无高血糖不良事件发生。

关键词：围术期地塞米松甲状腺切除咽喉痛

吞咽障碍治疗仪联合吞咽训练对治疗吞咽障碍的疗效观察

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吉林医学 2013年第31期34卷 6483-6485页

作者：李本夫张怀安李召鹏徐州矿务集团第二医院神经内科江苏徐州221011

目的:观察吞咽障碍治疗仪联合吞咽训练治疗脑卒中后吞咽障碍的疗效。方法:将100例脑卒中后吞咽障碍的患者随机分为观察组和对照组,每组各50例。两组均常规进行神经内科药物治疗,观察组增加吞咽障碍治疗仪联合吞咽训练治疗。对两组治疗... 详细信息

目的:观察吞咽障碍治疗仪联合吞咽训练治疗脑卒中后吞咽障碍的疗效。方法:将100例脑卒中后吞咽障碍的患者随机分为观察组和对照组,每组各50例。两组均常规进行神经内科药物治疗,观察组增加吞咽障碍治疗仪联合吞咽训练治疗。对两组治疗前、治疗后洼田饮水测试及滕岛一郎吞咽功能评分、临床疗效评定。结果:住院治疗15 d后,观察组洼田饮水评级及滕岛一郎吞咽功能评分均明显高于对照组(P<0.05);临床疗效比较,两组吞咽功能均提高,但观察组疗效明显高于对照组(P<0.05)。结论:吞咽障碍治疗仪联合康复训练治疗脑卒中后吞咽障碍疗效显著,可明显改善吞咽功能障碍,提高患者生存质量,改善预后。

关键词：脑卒中吞咽障碍吞咽障碍治疗仪吞咽训练

云南省血吸虫病流行区一种拟钉螺及其寄生吸虫尾蚴的分子鉴定

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中国血吸虫病防治杂志 2020年第2期32卷 159-167页

作者：杜春红吕山张云李石柱熊孟韬何志海李志华吴明寿孙佳昱任银本陈春琼顾琼王云松董毅云南省地方病防治所大理671000 中国疾病预防控制中心寄生虫病预防控制所、国家热带病研究中心云南省祥云县血吸虫病防治站

目的对云南省血吸虫病流行区的一种拟钉螺及其寄生吸虫进行分子生物学鉴定,了解其种属分类地位。方法采集云南省祥云县拟钉螺和钉螺,压碎镜检采集螺软体腹足部组织,并观察其体内尾拗寄生情况。采用逸拗法采集拟钉螺寄生的不同形态尾拗,... 详细信息

目的对云南省血吸虫病流行区的一种拟钉螺及其寄生吸虫进行分子生物学鉴定,了解其种属分类地位。方法采集云南省祥云县拟钉螺和钉螺,压碎镜检采集螺软体腹足部组织,并观察其体内尾拗寄生情况。采用逸拗法采集拟钉螺寄生的不同形态尾拗,螺体组织和尾拗样本分别提取基因组DNA,采用PCR法扩增螺体内16S核糖体RNA(16S rRNA)、细胞色素c氧化酶I(COI)、28S核糖体DNA(28S rDNA)基因及其体内寄生吸虫尾拗的NADH脱氢酶亚基1(ND1)、28S rfNA基因,对扩增产物进行测序,并通过序列比对及系统进化分析鉴定样本螺和寄生吸虫种属。结果共检测拟钉螺样本382只,发现无叉形、双叉形、燕子形等3种形态吸虫尾拗,阳性率分别为20.94%(80/382)、3.40%(13/382)、7.07%(27/382)。基于16S rRNA、COI、28S rDNA基因的分子进化分析显示,该拟钉螺与滇池德拉维螺(Delavaya dianchiensis)同源性较高、聚在同一个分支。基于ND1、28S rDNA4基因的序列分析显示,无叉形尾拗吸虫属侧殖吸虫科,燕子形尾拗吸虫属孔肠科,双叉形尾拗吸虫可能为不同于中华血吸虫(Schistosoma sinensium)和勾形卵血吸虫(Schistosoma ovuncatum)的另一种血吸虫。结论初步了解了云南省血吸虫病流行区拟钉螺及其寄生吸虫种属分类,但更明确的分类关系和危害性等尚有待深入研究。

关键词：拟钉螺钉螺吸虫尾蚴 16SrRNA基因 COI基因 28SrDNA基因 ND1基因血吸虫病云南省

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

Search for the doubly heavy baryons Ω^(0)_(bc) and E^(0)_(bc) decaying to Λ^(+)_(c)π^(-) and E^(+)_(c)π^(-)

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Chinese Physics C 2021年第9期45卷 10-21页

作者： R.Aaij C.Abelian Beteta T.Ackernley B.Adeva M.Adinolfi H.Afshamia C.A.Aidala S.Aiola Z.Ajaltouni S.Aka J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelie 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.Beminghoff 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.Bjorn 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.Camiti 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.Crkovska M.Cruz Torres R.Currie C.L.Da Silva E.Dall'Occo J.Dalseno C.D'Ambrosi Centro Brasileiro de Pesquisas Fisicas(CBPF) Rio de JaneiroBrazil Universidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina Institute of High Energy Physics(IHEP) BeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University ofChinese Academy of Sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Savoie Mont Blanc CNRSIN2P3-LAPPAnnecyFrance Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Universite Paris-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/FN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut für Kemphysik(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 FrascatiItaly INFN Sezione di Genova GenovaItaly INFN Sezione di Milano MilanoItaly INFN Sezione di Milano-Bicocca MilanoItaly INFN Sezione di Cagliari MonserratoItaly Universita degli Studi di Padova Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma La Sapienza RomaItaly INFN Sezione di Roma Tor Vergata RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands AGH-University of Science and Technology Faculty of Physics and Applied Computer ScienceKr

The first search for the doubly heavyΩ^(0)_(bc)baryon and a search for the E^(0)_(bc)baryon 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 fb^(-1).The baryons are reconstructed via their decays to Λ^(+)_(c)π^(-)and E^(+)_(c)π^(-).No significant excess is fbund for invariant masses between 6700 and 7300 MeV/c^(2),in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/*** limits are set on the ratio of the Ω^(0)_(bc)and E^(0)_(bc)production cross-section times the branching fraction to Λ^(+)_(c)π^(-)(E^(+)_(c)π^(-))relative to that of the Λ^(0)_(b)(E^(0)_(b))baryon,for different lifetime hypotheses,at 95%confidence *** upper limits range from 0.5 x 10^(-4)to 2.5 x 10^(-4)for theΩ^(0)_(bc)→Λ^(+)_(c)π^(-)(E^(0)_(bc)→Λ^(+)_(c)π^(-))decay,and from 1.4x 10^(-3)to 6.9 x 10^(-3)for theΩ^(0)_(bc)→E^(+)_(c)π^(-)(E^(0)_(bc)→E^(+)_(c)π^(-))decay,depending on the considered mass and lifetime of theΩ^(0)_(bc)(E^(0)_(bc))baryon.

关键词： B physics quarkonium spectroscopy heavy quark production

Search for the doubly heavy baryon Ξ_(bc)^(+)→ decaying to J/ψΞ_(c)^(+)

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Chinese Physics C 2023年第9期47卷 1-13页

作者： R.Aaij A.S.W.Abdelmotteleb C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.Agapopoulou C.A.Aidala S.Aiola Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle S.Amato J.L.Amey Y.Amhis L.An L.Anderlini M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archilli A.Artamonov M.Artuso E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bailly-reyre P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista de Souza Leite M.Barbetti R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.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 N.V.Biesuz S.Bifani P.Billoir A.Biolchini M.Birch F.C.R.Bishop A.Bitadze A.Bizzeti M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev N.Bondar S.Borghi M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura L.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes P.Campana D.H.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus A.Casais Vidal R.Caspary G.Casse M.Cattaneo G.Cavallero V.Cavallini S.Celani J.Cerasoli D.Cervenkov A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek G.Ciullo 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 Centro Brasileiro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Universidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina Institute Of High Energy Physics(IHEP) BeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Université Savoie Mont Blanc CNRSIN2P3-LAPPAnnecyFrance UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultät Physik Technische Universität DortmundDortmundGermany Max-Planck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universität 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 FrascatiItaly INFN Sezione di Genova GenovaItaly INFN Sezione di Milano MilanoItaly INFN Sezione di Milano-Bicocca MilanoItaly INFN Sezione di Cagliari MonserratoItaly Universitàdegli Studi di Padova Universitàe INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma La Sapienza RomaItaly INFN Sezione di Roma Tor Vergata RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands AGH-University of Science and Technology Faculty of Physics and Applied Computer Scienc

A first search for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb−1 recorded at centre-of-mass energies of 7, 8, and 13 TeV. Two peaking structures are seen with a local (global) significance of 4.3(2.8) and 4.1(2.4) standard deviations at masses of 6571 and 6694 MeV/c2, respectively. Upper limits are set on the Ξ+bc baryon production cross-section times the branching fraction relative to that of the B+c→J/ψD+s decay at centre-of-mass energies of 8 and 13 TeV, in the Ξ+bc and in the B+c rapidity and transverse-momentum ranges from 2.0 to 4.5 and 0 to 20GeV/c, respectively. Upper limits are presented as a function of the Ξ+bc mass and lifetime.

关键词： QCD B physics charm physics spectroscopy