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Diversity of nivicolous myxomycetes of the Teberda State Biosphere Reserve (northwestern Caucasus,Russia)

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Fungal Diversity 2013年第2期59卷 109-130页

作者： Y.K.novozhilov M.Schnittler D.A.Erastova M.V.Okun O.n.Schepin E.Heinrich Komarov Botanical Institute of the Russian Academy of Sciences Prof.Popov St.2197376 St.PetersburgRussia Institute of Botany and Landscape Ecology Ernst Moritz Arndt University GreifswaldGrimmer Str.8817487 GreifswaldGermany CIBIV–Center for Integrative Bioinformatics in Vienna Max F.Perutz Laboratories(MFPL)University of ViennaMedical University of ViennaCampus Vienna Biocenter 5(VBC5)1030 ViennaAustria

nivicolous myxomycete assemblages were surveyed on the northwest of the Greater Caucasian ridge in May-June 2010 and 2011 at a north facing transect between 1,700 and 2,920 m elevation of the summit Malaya Khatipara situated within the Teberda State Biosphere *** characters of 396 collections representing 45 taxa(39 species,3 varieties,and 3 forms)of myxomycetes in 8 genera and 5 families were ***(13)taxa are classified as rare(a species representsnly seven species were found to be widely distributed(present in 50%or more of the 17 studied localities).To confirm the assignment of specimens to morphospecies,we obtained independently from determination 145 partial sequences of the 18S SSU rRnA gene from 35 taxa of Lamproderma,Meriderma,Physarum and Diderma,which turned out to represent 58 *** of the taxa represented by more than one sequence had several genotypes,with an average of 1.7 genotypes per *** for three taxonomically difficult groups of species,partial SSU sequences did well correspond with the respective morphospecies and where similar or identical to sequences of specimens from the European Alps,making this marker a good candidate for barcoding in *** richness and diversity increased from subalpine crooked-stem birch forests(23 species,2 varieties,H′02.8,E00.88,D00.08)to alpine dwarf shrub communities(34 species and 2 varieties,2 forms,H′03.2,E00.89,D00.05)but decreased again for alpine meadows(27 species and 2 varieties,2 forms,H′03.1,E00.91,D00.06).Species richness and alpha-diversity reached maximum values for ground litter,whereas leaves and stems of living shrubs above ground harboured a more depauperate myxomycete assemblage.

关键词： Alpine ecosystems Distribution Genotypes Molecular signatures Myxogastria Amoebozoa Plasmodial slime moulds Species inventory Species richness Species delimitation

VEPP-2000正负电子对撞机上CMD-3物理结果综述（英文）

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中国科学技术大学学报 2016年第4期46卷 259-271页

作者： FEDOTOVICH G.V. AMIRKHAnOV A.n. AnISEnKOV A.V. AULCHEnKO V.M. BAnZAROV V.S. BASHTOVOY n.S. BOnDAR A.E. BRAGIn A.V. EIDELMAn S.I. EPIFAnOV D.A. EPSHTEYn L.B. EROFEEV A.L. GAYAZOV S.E. GREBEnUK A.A. GRIBAnOV S.S. GRIGORIEV D.n. IGnATOV F.V. IVAnOV V.L. KARPOV S.V. KAZAnIn V.F. KOROBOV A.A. KOVALEnKO O.A. KOZYREV A.n. KOZYREV E.A. KROKOVnY P.P. KUZMEnKO A.E. KUZMIn A.S. LOGASHEnKO I.B. LUKIn P.A. MIKHAILOV K.Yu. OKHAPKInV.S. PESTOVYu.n. popov A.S. RAZUVAEV G.P. RUBAn A.A. RYSKULOV n.M. RYZHEnEnKOV A.E. SHEBALIn V.E. SHEMYAKIn D.n. SHWARTZ B.A. SIBIDAnOV A.L. SHATUnOV Yu.M. SOLODOV E.P. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I. YUDIn Yu.V. 布德克尔核物理研究所新西伯利亚州立大学新西伯利亚州立理工大学悉尼大学物理学院福基纳高能物理系

2010年12月VEPP-2000正负电子对撞机上的CMD-3探测器开始运行.在质心系能量区间0.32~2GeV范围内,已经获取了积分亮度约为60pb-1的数据.目前已经得到多种强子末态截面的初步结果,尤其是e^+e^-→π^+π^-,π^+π^-π~0,K_LK_S,K^+K^-,ηγ... 详细信息

2010年12月VEPP-2000正负电子对撞机上的CMD-3探测器开始运行.在质心系能量区间0.32~2GeV范围内,已经获取了积分亮度约为60pb-1的数据.目前已经得到多种强子末态截面的初步结果,尤其是e^+e^-→π^+π^-,π^+π^-π~0,K_LK_S,K^+K^-,ηγ,3(π^+π^-),2(π^+π^-π~0),K^+K^-π^+π^-,K^+K^-η,K^+K^-π0,ηπ^+π^-,ωπ^+π^-和ω→π~0e^+e^-.为正确描述角分布和不变质量分布及截面分布,多强子末态过程必须考虑其中间共振态.

关键词：强子信号/本底分离截面

用CMD-3谱仪研究VEPP-2000对撞机上的e^+e^-→K^+K^-η过程（英文）

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中国科学技术大学学报 2016年第6期46卷 502-506页

作者： IVAnOV V.L. AMIRKHAnOV A.n. AnISEnKOV A.V. AULCHEnKO V.M. BAnZAROV V.S. BASHTOVOY n.S. BERKAEV D.E. BOnDAR A.E. BRAGIn A.V. EIDELMAn S.I. EPIFAnOV D.A. EPSHTEYn L.B. EROFEEV A.L. FEDOTOVICH G.V. GAYAZOV S.E. GREBEnUK A.A. GRIBAnOV S.S. GRIGORIEV D.n. IGnATOV F.V. KARPOV S.V. KAZAnIn V.F. KOROBOV A.A. KOVALEnKO O.A. KOZYREV A.n. KOZYREV E.A. KROKOVnY P.P. KUZMEnKO A.E. KUZMIn A.S. LOGASHEnKO I.B. LUKIn P.A. MIKHAILOV K.YU. OKHAPKIn V.S. PESTOVY U.n. popov A.S. RAZUVAEV G.P. RUBAn A.A. RYSKULOV n.M. RYZHEnEnKOV A.E. SHEBALIn V.E. SHEMYAKIn D.n. SHWARTZ B.A. SIBIDAnOV A.L. SHATUnOVY U.M. SOLODOV E.P. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I. YUDInY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

报道了用CMD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CMD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 Ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模... 详细信息

报道了用CMD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CMD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 Ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模式,选出的事例总数为1454±48.测量的截面近似为Ф(1680)和非共振振幅按照矢量介子主导模型的叠加,并得到了Ф(1680)介子共振参数的初步结果.

关键词：强子信号/本地分离截面

CMD-3实验π介子形状因子的初步结果（英文）

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中国科学技术大学学报 2016年第4期46卷 323-330页

作者： AKHMETSHIn R.R. AMIRKHAnOV A.n. AnISEnKOV A.V. AULCHEnKO V.M. BAnZAROV V.Sh. BASHTOVOY n.S. BERKAEV D.E. BOnDAR A.E. BRAGIn A.V. FEDOTOVICH G.V. EIDELMAn S.I. EPIFAnOV D.A. EPSHTEYn L.B. EROFEEV A.L. GAYAZOV S.E. GREBEnUKV A.A. GRIBAnOVV S.S. GRIGORIEV D.n. IGnATOV F.V. IVAnOV V.L. KARPOV S.V. KAZAnIn V.F. KHAZIn B.I. KOOP I.A. KOROBOV A.A. KOVALEnKO O.A. KOZYREV A.n. KOZYREV E.A. KROKOVnY P.P. KUZMEnKO A.E. KUZMIn A.S. LOGASHEnKO I.B. LUKIn P.A. MIKHAILOV K.Yu. OKHAPKIn V.S. PESTOV Yu.n. popov A.S. RAZUVAEV G.P. RUBAn A.A. RYSKULOV n.M. RYZHEnEnKOV A.E. SHEBALIn V.E. SHWARTZ B.A. SHWARTZ D.B. SIBIDAnOV A.L. SHATUnOV Yu.M. SOLODOV E.P. SHEMYAKIn D.n. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I. YUDIn Yu.V. 布德克尔核物理研究所新西伯利亚州立大学新西伯利亚州立理工大学悉尼大学物理学院

自2010年12月起,坐落在正负电子对撞机VEPP-2000上的CMD-3探测器成功取数.2013年首次在对撞能量小于1GeV能区进行扫描,并获取积分亮度为18pb-1的数据.本文给出了e^+e^-→π^+π^-截面的初步结果.

关键词： π介子形状因子正负电子对撞机强子截面

VEPP-2000 e^+e^-对撞机上用CMD-3谱仪研究1004-1060 MeV能区的e^+e^-→K■过程（英文）

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中国科学技术大学学报 2016年第6期46卷 507-513页

作者： KOZYREV E.A. AMIRKHAnOV A.n. AnISEnKOV A.V. M.AULCHEnKO V. BAnZAROV V.S. BASHTOVOY n.S. BERKAEV D.E. BOnDAR A.E. BRAGIn A.V. EIDELMAn S.I. A.EPIFAnOV D. EPSHTEYn L.B. EROFEEV A.L. FEDOTOVICH G.V. GAYAZOV S.E. GREBEnUK A.A. GRIBAnOV S.S. GRIGORIEV D.n. IGnATOV F.V. IVAnOV V.L. KARPOV S.V. KASAEV A.S. KAZAnIn V.F. IRPOTIn A.n. KOROBOV A.A. KOVALEnKO O.A. KOZYREV A.n. KOOP I.A. KROKOVnY P.P. KUZMEnKO A.E. KUZMIn A.S. LOGASHEnKO I.B. LUKIn P.A. MIKHAILOV K.YU. OKHAPKIn V.S. OTBOEV A.V. PESTOVY U.n.popov A.S. RAZUVAEV G.P. RUBAn A.A. RYSKULOV n.M. RYZHEnEnKOV A.E. SEnCHEnKO A.I. SHEBALIn V.E. SHEMYAKIn V.E. SHWARTZ A.S. SHWARTZ D.B. SIBIDAnOV A.L. SHATUnOV P.YU. SHATUnOVY U.M. SOLODOV E.P. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I. YUDInY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在质心能量1004-1060Me V之间的25个能量点测量了e^+e^-→K_S^0+K_L^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEPP-2000e^+e^-对撞机上CMD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其... 详细信息

在质心能量1004-1060Me V之间的25个能量点测量了e^+e^-→K_S^0+K_L^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEPP-2000e^+e^-对撞机上CMD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其激发态按照矢量介子主导模型的叠加,得到了Ф(1020)介子的共振参数.

关键词：强子正负电子对撞机介子形状因子

VEPP-2000 e^+e^-对撞机上用CMD-3探测器测量e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-的截面（英文）

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中国科学技术大学学报 2016年第6期46卷 514-522页

作者： popov A.S. AKHMETSHIn R.R. AMIRKHAnOV A.n. AnISEnKOV A.V. AULCHEnKO V.M. BAnZAROV V.S. BASHTOVOY n.S. BERKAEV D.E. BOnDAR A.E. BRAGIn A.V. EIDELMAn D.E. EPIFAnOV D.A. EPSHTEYn L.B. EROFEEV A.L. FEDOTOVICH G.V. GAYAZOV S.E. GREBEnUK A.A. GRIBAnOV S.S. GRIGORIEV D.n. GROMOV E.M. IGnATIn F.V. IVAnOV V.L. KARPOV S.V. KASAEV A.S. KORPOTIn A.n. KOOP I.A. KOVALEnKO O.A. KAZAnIn V.F. KOZYREV A.n. KOZYREV E.A. KROKOVnY P.P. KUZMEnKO A.E. KUZMIn A.S. LOGASHEnKO I.B. LIKIn P.A. MIKHAILOV K.YU. OKHAPKIn V.S. OTBOEV A.V. PESTOVY U.n. PIVOVAROV S.G. RAZUVAEV G.P. ROMAnOV A.L. RUBAn A.A. RYSKULOV n.M. RYZHEnEnKOV A.E. SHEBALIn V.E. SHEMYAKIn D.n. SHWARTZ B.A. SHWARTZ D.B. SIBIDAnLOV A.L. SHATUnOV P.YU. SHATUnOVY U.M. SOLODOV E.P. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I.. YUDInY U.V. ZHARInOVY U.M. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学东京大学物理系国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在VEPP^-2000e^+e^-对撞机上,CMD^-3探测器研究了e^+e^-→ηπ^+π^-→γγπ^+π^-,e^+e^-→ηπ^+π^-→π0π^+π^-π^+π^-以及e^+e^-→ωπ^+π^-→π0π^+π^-π^+π^-等过程.分析使用的是2011和2012年在1.2^-2.0Ge V能区收集的相应积分亮度为3×104nb^-1的数据.用η→γγ道测量了e^+e^-→ηπ^+π^-的波恩截面,结果与相关的实验结论相吻合;还用末态η→π^+π^-π0和ω→π^+π^-π0分别得到了e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-波恩截面的初步结果;e^+e^-→ηπ^+π^-波恩截面的数值还被用于确定τ^-→ηπ^-π0ντ的衰变分支比.

关键词：截面 ηπ+π- ωπ+π- 强子 τ

POSSIBILITIES TO MODIFY AV COnDUCTIOn In ATRIAL FIBRILLATIOn PATIEnTS

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中国介入心脏病学杂志 1998年第4期6卷 165-165页

作者： I.V.Antonchenko S.V.popov G.M.Savenkova V.V.Aleev Institute of Cardiology TomskRussia

Most of atrial fibrillation(AF)pts have organic artrial injury which ismaintained at modified AV conduction as an AV *** this procedure allows to control ventricular contractionsrate(VCR)in AF *** that "slow" pathways potentials arepotentials of atrial fibers eonneated with the AV node we used highfrequency current in the meadseptal right atrial area in 24 pts aged 52-74(mean 66±4.9 yrs)having paroxysmal(n=16)and chronic(n=8)*** was induced in pts who had sinus rhythm before ablation andif VSR exceeded 50-70 beats/min the procedure was *** results were obtained in 18(75% of pts).These pts didnot reveal decreased Wenekebach point or increased effectiverefractory period of the AV *** decreased from 163±27 to65±9(p=0.001)during *** atropine was given and if VSRexceeded 120/min we considered the procedure to be *** and beta-blockers which were ineffective before ablationbecame effective to control VSR after *** 6 to 12 months afterthe procedure,these pts underwent exercise testing(AF was inducedin the sinus rhythm pts):maximum VCR was 116±10.8/*** the procedure inefficacy,complete AV block was reached duringablation in 2(8%)pts in whom artificial pacemaker was *** modification of AV conduction is an effective procedure tocontrol VSR in AF pts and allows to flee 75% of pts fromantiarrhythmic drugs.

关键词： fibrillation sinus rhythm paroxysmal conduction exercise implanted ablation junction repeated

Fungal diversity notes 1611-1716: taxonomic and phylogenetic contributions on fungal genera and species emphasis in south China

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Fungal Diversity 2023年第5期122卷 161-403页

作者： Indunil C.Senanayake Walter Rossi Marco Leonardi Alex Weir Mark McHugh Kunhiraman C.Rajeshkumar Rajnish K.Verma Samantha C.Karunarathna Saowaluck Tibpromma nikhil Ashtekar Sreejith K.Ashtamoorthy Sanjay Raveendran Gurmeet Kour Aishwarya Singh Saúl De la Peña-Lastra Antonio Mateos Miroslav Kolařík Vladimír Antonín HanaŠevčíková Fernando Esteve-Raventós Ellen Larsson Fermín Pancorbo Gabriel Moreno Alberto Altés Yolanda Turégano Tian-Ye Du Li Lu Qi-Rui Li Ji-Chuan Kang Sugantha Gunaseelan Kezhocuyi Kezo Malarvizhi Kaliyaperumal Jizhen Fu Milan C.Samarakoon Yusufjon Gafforov Shakhnoza Teshaboeva Pradeep C.Kunjan Arya Chamaparambath Adam Flakus Javier Etayo Pamela Rodriguez-Flakus Mikhail P.Zhurbenko nimali Ide Silva Danushka S.Tennakoon KPDeepna Latha Patinjareveettil Manimohan KnAnil Raj Mark S.Calabon Abdollah Ahmadpour Zeinab Heidarian Zahra Alavi Fatemeh Alavi Youbert Ghosta Razmig Azizi Mei Luo Min-Ping Zhao nuwan D.Kularathnage Li Hua Yun-Hui Yang Chun-Fang Liao Hai-Jun Zhao Anis S.Lestari Subashini C.Jayasiri Feng-Ming Yu Lei Lei Jian-Wei Liu Omid Karimi Song-Ming Tang Ya-Ru Sun Yong Wang Ming Zeng Zin H.Htet Benedetto T.Linaldeddu Artur Alves Alan J.L.Phillips Carlo Bregant Lucio Montecchio AndréDe Kesel Vincent P.Hustad Andrew n.Miller Anna G.Fedosova Viktor Kučera Mubashar Raza Muzammil Hussain Yan-Peng Chen Vinodhini Thiyagaraja Deecksha Gomdola Achala R.Rathnayaka Asha J.Dissanayake nakarin Suwannarach Sinang Hongsanan Sajeewa S.n.Maharachchikumbura Lakmali S.Dissanayake nalin n.Wijayawardene Rungtiwa Phookamsak Saisamorn Lumyong E.B.Gareth Jones neelamanie Yapa Dhanushka n.Wanasinghe ning Xie Mingkwan Doilom Ishara S.Manawasinghe Jian-Kui(Jack)Liu Qi Zhao Biao Xu Kevin D.Hyde Jiage Song Innovative Institute for Plant Health/Key Laboratory of Green Prevention and Control On Fruits and Vegetables in South China Ministry of Agriculture and Rural AffairsZhongkai University of Agriculture and EngineeringHaizhu DistrictGuangzhou 510225GuangdongChina Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand Guangdong Provincial Key Laboratory for Plant Epigenetics College of Life Science and OceanographyShenzhen University3688Nanhai AvenueNanshanShenzhen 518055GuangdongChina Sect.Environmental Sciences Department MeSVAUniversity of L’AquilaVia Vetoio67100 CoppitoAQItaly Department of Environmental Biology SUNY-ESF241 Illick Hall1 Forestry DriveSyracuseNY 13210USA national Fungal Culture Collection of India MACS Agharkar Research InstitutePuneMaharashtra 411004India Department of Plant Pathology Punjab Agricultural UniversityLudhianaPunjab 141004India Center for Yunnan Plateau Biological Resources Protection and Utilization College of Biological Resource and Food EngineeringQujing Normal UniversityQujing 655011YunnanChina Department of Forest Ecology Kerala Forest Research InstitutePeechiThrissurKerala 680653India Department of Botany The American CollegeTallakkulamMaduraiTamil Nadu 625002India Department of Zoology Savitribai Phule Pune UniversityGaneshkhind RdGaneshkhindPuneMaharashtra 411007India University of Santiago de Compostela 15782 Santiago de CompostelaSpain Sociedad Micológica Extremeña C/Sagitario 1410001 CáceresSpain Institute of Microbiology of the Czech Academy of Sciences Vídeňská108314220 Prague 4Czech Republic Department of Botany Moravian MuseumZelnýtrh 665937 BrnoCzech Republic Department of Life Sciences(Botany Unit) University of Alcalá28805 Alcaláde HenaresMadridSpain Biological and Enviromental Sciences University of Gothemburgand Gothemburg Global Biodiversity CentreBox 46140530 GöteborgSweden Madrid Mycological Society Real Jardín BotánicoC/Claudio Moyano 128014 MadridSpain State Ke

This article is the 15th contribution in the Fungal Diversity notes series,wherein 115 taxa from three phyla,nine classes,28 orders,48 families,and 64 genera are *** taxa described and illustrated in the present study include a new family,five new genera,61 new species,five new combinations,one synonym,one new variety and 31 records on new hosts or new geographical *** *** introduced and accommodated in *** new genera introduced in this study are Ageratinicola,Kevinia,Pseudomultiseptospora(Parabambusicolaceae),Marasmiellomycena,and Vizzinia(Porotheleaceae).newly described species are Abrothallus altoandinus,Ageratinicola kunmingensis,Allocryptovalsa aceris,Allophoma yuccae,Apiospora cannae,***,***,Boeremia wisteriae,Calycina papaeana,Clypeo-coccum lichenostigmoides,Coniochaeta riskali-shoyakubovii,Cryphonectria kunmingensis,Diaporthe angustiapiculata,***,***,Diatrypella guangdongense,Dothiorella franceschinii,Endocalyx phoenicis,Epicoc-cum terminosporum,Fulvifomes karaiensis,***,Ganoderma ghatensis,Hysterobrevium baoshanense,Inocybe avellaneorosea,***,Jahnula oblonga,Kevinia lignicola,Kirschsteiniothelia guangdongensis,Laboulbenia caprina,***,***,***,***,***,***,***,***,Laccaria rubriporus,Lasiodiplodia morindae,Lyophyllum agnijum,Marasmiellomycena pseudoomphaliiformis,Melomastia beihaiensis,nemania guangdongensis,nigrograna thailandica,nigrospora ficuum,Oxydothis chinensis,***,Petriella thailandica,Phaeoacremonium chinensis,Phialocephala chinensis,Phytophthora debattistii,Polyplosphaeria nigrospora,Pronectria loweniae,Seriascoma acutispora,Setoseptoria bambusae,Stictis anomianthi,Tarzetta tibetensis,Tarzetta urceolata,Tetraploa obpyriformis,Trichoglossum beninense,and Tricoderma *** provide an emendation for Urnula ailaoshanensis Agaricus duplocingulatoides *** i

关键词： Agaricomycetes Ascomycota Basidiomycota Dothideomycetes Eurotiomycetes Fungal diversity Geoglossomycetes Geographical distribution Host records Incertae sedis Laboulbeniomycetes Lecanoromycetes Leotiomycetes novel taxa new combination Oomycota Peronosporea Pezizomycetes Phylogeny Sordariomycetes South Chinese fungi Taxonomy

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