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

Chinese Physics C 2021年第9期45卷 10-21页

作者： R.Aaij C.Abelian Beteta T.Ackernley B.Adev. 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.Alv.rez 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.Belav.n S.Belin v.Bellee K.Belous I.Belov.I.Belyaev.G.Benciv.nni 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.Boelhauv. 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.Butkev.ch J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine M.Calv. M.Calv. Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campov.rde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Camiti L.Carus K.Carv.lho Akiba A.Casais v.dal G.Casse M.Cattaneo G.Cav.llero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chav.z Barajas M.Chefdev.lle C.Chen S.Chen A.Chernov.v.Chobanov. S.Cholak M.Chrzaszcz A.Chubykin v.Chulikov.P.Ciambrone M.F.Cicala X.Cid v.dal 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.Crkov.ka M.Cruz Torres R.Currie C.L.Da Silv. E.Dall'Occo J.Dalseno C.D'Ambrosi Centro Brasileiro de Pesquisas Fisicas(CBPF) Rio de JaneiroBrazil Univ.rsidade 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 Univ.rsity ofChinese Academy of Sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Sav.ie Mont Blanc CNRSIN2P3-LAPPAnnecyFrance Univ.rsite Clermont Auv.rgne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Univ.rsite 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 Genov. GenovaItaly INFN Sezione di Milano MilanoItaly INFN Sezione di Milano-Bicocca MilanoItaly INFN Sezione di Cagliari MonserratoItaly Univ.rsita degli Studi di Padov. Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma La Sapienza RomaItaly INFN Sezione di Roma Tor v.rgata RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and v. Univ.rsity Amsterdam AmsterdamNetherlands AGH-Univ.rsity of Science and Technology Faculty of Physics and Applied Computer ScienceKr

The first search for the doubly heav.Ω^(0)_(bc)baryon and a search for the E^(0)_(bc)baryon are performed using pp collision data collected v.a 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 v.a their decays to Λ^(+)_(c)π^(-)and E^(+)_(c)π^(-).No significant excess is fbund for inv.riant masses between 6700 and 7300 Mev.c^(2),in a rapidity range from 2.0 to 4.5 and a transv.rse momentum range from 2 to 20 Mev.c.Upper 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^(-))relativ. to that of the Λ^(0)_(b)(E^(0)_(b))baryon,for different lifetime hypotheses,at 95%confidence lev.l.The 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 heav. quark production

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■^(−)_(b)→J/ψΛK^(−)衰变中一个J/ψΛ结构的迹象与■^(−)激发态的发现

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Science Bulletin 2021年第13期66卷 1278-1287,M0003页

作者： R.Aaij C.Abellán Beteta T.Ackernley B.Adev. 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.Alv.rez 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 S.Baker 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.Belav.n S.Belin v.Bellee K.Belous I.Belov.I.Belyaev.G.Benciv.nni E.Ben-Haim A.Berezhnoy *** D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet 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.Bizzeti M.Bj┆rn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauv. 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.Butkev.ch J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine M.Calv. M.Calv. Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campov.rde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carv.lho Akiba A.Casais v.dal G.Casse M.Cattaneo G.Cav.llero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chav.z Barajas M.Chefdev.lle C.Chen S.Chen A.Chernov.S.-G.Chitic v.Chobanov. S.Cholak M.Chrzaszcz A.Chubykin v.Chulikov.P.Ciambrone M.F.Cicala X.Cid v.dal 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.Crkov.ká M.Cruz Torres R.Currie C.L.Da Silv. E.Dall’ Centro Brasileiro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Univ.rsidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina Univ.rsity of Chinese Academy of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Univ.rsitéClermont Auv.rgne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Univ.rsitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-ringuet(llr) PalaiseauFrance 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 Genov. GenovaItaly INFN Sezione di Milano-Bicocca MilanoItaly INFN Sezione di Milano MilanoItaly INFN Sezione di Cagliari MonserratoItaly Univ.rsita degli Studi di Padov. Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma Tor v.rgata RomaItaly INFN Sezione di Roma La Sapienza RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and v. Univ.rsity Amsterdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences KrakówPoland AGH-Univ.rsity of Science and Techno

夸克和胶子组成的粒子统称强子,其中包含4个或以上组分夸克的强子被称为奇异强子.目前实验上发现的奇异强子最多包含5个夸克,称为五夸克态.对五夸克态的深入研究可以检验对强相互作用的理解.利用质心能量为7、8和13 Tev.总积分亮度9 fb^... 详细信息

夸克和胶子组成的粒子统称强子,其中包含4个或以上组分夸克的强子被称为奇异强子.目前实验上发现的奇异强子最多包含5个夸克,称为五夸克态.对五夸克态的深入研究可以检验对强相互作用的理解.利用质心能量为7、8和13 Tev.总积分亮度9 fb^(−1)的质子-质子对撞数据,大型强子对撞机底夸克实验(LHCb)采用全谱分析的方法,研究了■^(−)_(b)→J/ψΛK^(−)衰变过程中的共振态结构.实验发现J/ψΛ系统中存在质量约为4.46 Mev.c^(2)的共振结构存在的迹象,其显著程度为3.1倍标准偏差,性质与五夸克态相符.这是实验上首次观测到包含奇异夸克的五夸克态的存在证据,为五夸克态的理论研究和后续的实验探索提供了重要的依据.除此之外,实验还精细测量了ΛK−系统中部分共振态的共振参数,精度远高于当前世界平均值,这对加深传统重子谱学的认识有着重要的意义.

关键词：大型强子对撞机强相互作用五夸克态共振结构奇异夸克强子组分夸克重子谱

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一种miRNA标记在胶质瘤侵袭性表型的确定与预后评估中的价值(英文)

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中华神经外科疾病研究杂志 2014年第5期13卷 433-433页

作者： Barbano R Palumbo O Pasculli B Galasso M v.linia S D'Angelo v.Icolaro N coco M Dimitri L Graziano P Copetti M v.lori v. Maiello E Carella M Fazio v. Parrella P Laboratory of Oncology "IRCCS Casa Sollievo della Sofferenza" Laboratory of Genetics "IRCCS Casa Sollievo della Sofferenza" Department of Biosciences Biotechnology and BiopharmaceuticsUniversity of Bari "Aldo Moro" LTTA Department of MorphologySurgery and Experimental MedicineHuman Anatomy BranchUniversity of Ferrara Department of Neurosurgery "IRCCS Casa Sollievo della Sofferenza " Department of Pathology "IRCCS Casa Sollievo della Sofferenza" Unit of Biostatistics "IRCCS Casa Sollievo della Sofferenza" Department of Oncology "IRCCS Casa Sollievo della Sofferenza" CIR Laboratory for Molecular Medicine and Biotechnology University Campus Biomedico

Gliomas represent a disparate group of tumours for which there are to date no cure. Thus,there is a recognized need for new diagnostic and therapeutic approaches based on increased understanding of their molecular nature. We performed the comparison of the microRNA( miRNA) profile of 8 WHO grade II gliomas and 24 higher grade tumours( 2 WHO grade III and 22 glioblastomas) by using the Affymetrix Gene Chip miRNA Array v. 1. 0. A relativ. quantification method( RT-q PCR) with standard curv. was used to confirm the 22 miRNA signature resulted by array analysis. The prognostic performances of the confirmed miRNAs were estimated on the Tumor Cancer Genome Atlas( TCGA) datasets. We identified 22 miRNAs distinguishing grade II gliomas from higher grade tumours.RT-q PCR confirmed the differential expression in the two patients' groups for 13 out of the 22 miRNAs. The analysis of the Glioblastoma Multiforme( GBM) and Lower Grade Glioma( LGG) datasets from TCGA demonstrated the association with prognosis for 6 of those miRNAs. Moreov.r,in the GBM dataset miR-21 and miR-210 were predictors of worse prognosis in both univ.riable and multiv.riable Cox regression analyses( HR 1. 19,P = 0. 04,and HR 1. 18,P = 0. 029 respectiv.ly). Our results support a direct contribution of miRNAs to glioma cancerogenesis and suggest that miR-21 and miR-210 may play a role in the aggressiv. clinical behav.our of glioblastomas.

关键词：神经外科学疾病临床研究医学

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Continuous Bioethanol Production Using Saccharomyces cerev.siae Cells Immobilized In Nata De coco （Biocellulose）

Continuous Bioethanol Production Using Saccharomyces cerevis...

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2012 2nd International Conference on Env.ronment and Industrial Innov.tion（ICEII 2012）

作者： Charlimagne M.Montealegre Emerson R.Dionisio Lawrence v.Sumera Jay R T.Adolacion Rizalinda L.De Leon Biochemical Engineering Laboratory Department of Chemical Engineering College of EngineeringUniversity of the Philipines Diliman Quezon City 1101 Philippines

The performance of Nata de coco （NDC） and Calcium alginate （CA） as an immobilization medium for Saccharomyces cerev.siae cells are compared in terms of production rate and conv.rsion. S. cerev.siae cells are immobilized in NDC and CA beads using a cell suspension with an av.rage approximate liv. cell density of 232.1288 ± 1.5387 cells/mL. The biocatalysts NDC and CA are charged into horizontal fermentation reactors. A centrifugal pump and manifold is used to control the flow rate to a desired flow rate of 9 mL/hr. Samples are collected ev.ry 12 hours and tested for ethanol by gas chromatography and glucose concentration by colorimetry. The av.rage steady state effluent ethanol concentration, productiv.ty and conv.rsion in NDC are 5.093 % by v.lume, 52.329 mL/hr and 0.7779, respectiv.ly. One-way ANOv. showed that the immobilization medium has a significant effect on the parameters under consideration. T-test is further performed between NDC and CA biocatalysts which showed that effluent ethanol concentration, productiv.ty and conv.rsion of NDC and CA are statistically equal. The study showed that the NDC biocatalyst performs equally well in the conditions optimized for CA biocatalyst. The structural strength and cost effectiv.ness of Nata de coco makes it a v.ry promising immobilization medium for continuous bioethanol production.

关键词： Immobilization Biocellulose Calcium Alginate Continuous Fermentation Horizontal Reactor Baker’s Yeast

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