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Search for the rare decays W^(+)→D_(s)^(+)γ and Z→D^(0)γ at LHCb

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中国物理C:英文版 2023年第9期47卷 14-26页

作者： R.Aaij A.S.W.Abdelmotteleb C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi P.Adlarson H.Afsharnia C.Agapopoulou C.A.Aidala Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle R.Amalric 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.Benane G.Bencivenni E.Ben-Haim A.Berezhnoy *** *** Andres 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 J.E.Blank S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev C.S.Bolognani R.Bolzonella N.Bondar F.Borgato 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 J.Brown 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.Campana D.H.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini 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.Cognera 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 Fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut für 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 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 search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity of 2.0fb−1.No significant signal is observed for either decay mode and upper limits on their branching fractions are set using W^(+)→D_(s)^(+)γ and Z→μ+μ−decays as normalization channels.The upper limits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence level for the W^(+)→D_(s)^(+)γ and Z→D^(0)γ decay modes,respectively.This is the first reported search for the Z→D^(0)γ decay,while the upper limit on the W+→D+sγbranching fraction improves upon the previous best limit.

关键词： W/Z boson rare decay upper limit of branching fraction

Chemical-Structural Changes of Organic Matter in a Semi-Arid Soil After Organic Amendment

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Pedosphere 2012年第3期22卷 283-293页

作者： C.NICOLS G.MASCIANDARO T.HERNNDEZ C.GARCIA Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC) Department of Soil and Water Conservation and Organic Wastes ManagementCampus Universitario de EspinardoP.O.160Murcia 3010 (Spain) Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio degli Ecosistemi (ISE)-Sezione di Chimica del SuoloArea della RicercaVia Moruzzi 1Pisa 56124 (Italy)

A 9-month incubation experiment using composted and non-composted amendments derived from vine pruning waste and sewage sludge was carried out to study the effects of the nature and stability of organic amendments on the structural composition of organic matter (OM) in a semi-arid soil.The changes of soil OM,both in the whole soil and in the extractable carbon with pyrophosphate,were evaluated by pyrolysis-gas chromatography and chemical analyses.By the end of the experiment,the soils amended with pruning waste exhibited less organic carbon loss than those receiving sewage sludge.The non-composted residues increased the aliphatic-pyrolytic products of the OM,both in the whole soil and also in the pyrophosphate extract,with the products derived from peptides and proteins being significantly higher.After 9 months,in the soils amended with pruning waste the relative abundance of phenolic-pyrolytic products derived from phenolic compounds,lignin and proteins in the whole soil tended to increase more than those in the soils amended with sewage sludge.However,the extractable OM with pyrophosphate in the soils amended with composted residues tended to have higher contents of these phenolic-pyrolytic products than that in non-composted ones.Thus,despite the stability of pruning waste,the composting of this material promoted the incorporation of phenolic compounds to the soil OM.The pyrolytic indices (furfural/pyrrole and aliphatic/aromatic ratios) showed the diminution of aliphatic compounds and the increase of aromatic compounds,indicating the stabilization of the OM in the amended soils after 9 months.In conclusion,the changes of soil OM depend on the nature and stability of the organic amendments,with composted vine pruning waste favouring humification.

关键词：土壤有机质有机添加物半干旱地区化学分析结构变化脂肪族化合物芳香族化合物污泥堆肥

Sub-percent precision measurement of neutrino oscillation parameters with JUNO

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Chinese Physics C 2022年第12期46卷 28-49页

作者： Angel Abusleme Thomas Adam Shakeel Ahmad Rizwan Ahmed Sebastiano Aiello Muhammad Akram Abid Aleem 安丰鹏安琪 Giuseppe Andronico Nikolay Anfimov Vito Antonelli Tatiana Antoshkina Burin Asavapibhop João Pedro Athayde Marcondes de André didier Auguste 白伟东 Nikita Balashov Wander Baldini Andrea Barresi Davide Basilico Eric Baussan Marco Bellato Antonio Bergnoli Thilo Birkenfeld Sylvie Blin David Blum Simon Blyth Anastasia Bolshakova Mathieu Bongrand Clément Bordereau Dominique Breton Augusto Brigatti Riccardo Brugnera Riccardo Bruno Antonio Budano Jose Busto Ilya Butorov Anatael Cabrera Barbara Caccianiga 蔡浩蔡啸蔡严克蔡志岩 Riccardo Callegari Antonio Cammi Agustin Campeny 曹传亚曹国富曹俊 Rossella Caruso Cédric Cerna Chi Chan 常劲帆 Yun Chang 陈国明陈平平 Po-An Chen 陈少敏 Xurong Chen 陈义学陈羽陈志源陈梓康程捷程雅苹 Yu Chin Cheng Alexey Chetverikov Davide Chiesa Pietro Chimenti Artem Chukanov Gérard Claverie Catia Clementi Barbara Clerbaux Selma Conforti di Lorenzo Daniele Corti Flavio Dal Corso Olivia Dalager Christophe De La Taille 邓智邓子艳 Wilfried Depnering Marco diaz Xuefeng ding 丁雅韵 Bayu dirgantara Sergey Dmitrievsky Tadeas Dohnal Dmitry Dolzhikov Georgy Donchenko 董建蒙 Evgeny Doroshkevich Marcos Dracos Frédéric Druillole 杜然杜书先 Stefano Dusini Martin Dvorak Timo Enqvist Heike Enzmann Andrea Fabbri Donghua Fan 樊磊方建方文兴 Marco Fargetta Dmitry Fedoseev 费政勇 Li-Cheng Feng 冯启春 Richard Ford Amélie Fournier 甘浩男高峰 Alberto Garfagnini Arsenii Gavrikov Marco Giammarchi Nunzio Giudice Maxim Gonchar 龚光华宫辉 Yuri Gornushkin Alexandre Göttel Marco Grassi Vasily Gromov 顾旻皓谷肖飞古宇关梦云管宇铎 Nunzio Guardone 郭聪郭竞渊郭万磊 Xinheng Guo 郭宇航 Paul Hackspacher Caren Hagner 韩然 Yang Han 何苗 Wei He Tobias Heinz Patrick Hellmuth 衡月昆 Rafael Herrera 贺远强侯少静 Yee Hsiung Bei-Zhen Hu 胡航 Jianrun Hu 胡俊胡守扬胡涛胡宇翔胡焯钧黄桂鸿黄翰雄黄凯旋黄文昊 Xin Huang 黄性涛黄永波惠加琪霍雷霍文驹 Cédric Huss Safeer Hussain Ara Ioannisian Roberto Isocrate Beatrice Jelmini Ignacio Jeria 季筱璐贾慧慧贾俊基蹇司玉蒋荻蒋炜江晓山荆小平 Cécile Jollet Jari Joutsenvaara Leonidas Kalousis Philipp Kampmann 康丽 Rebin Karaparambil Narine Kazarian Amina Khatun Yerevan Physics Institute YerevanArmenia UniversiéLibre de Bruxelles BrusselsBelgium Universidade Estadual de Londrina LondrinaBrazil Pontificia Universidade Catolica do Rio de Janeiro Rio de JaneiroBrazil Pontificia Universidad Católica de Chile SantiagoChile Universidad Tecnica Federico Santa Maria ValparaisoChile Beijing Institute of Spacecraft Environment Engineering BeijingChina Beijing Normal University BeijingChina China Institute of Atomic Energy BeijingChina Institute of High Energy Physics BeijingChina North China Electric Power University BeijingChina School of Physics Peking UniversityBeijingChina Tsinghua University BeijingChina University of Chinese Academy of Sciences BeijingChina Jilin University ChangchunChina College of Electronic Science and Engineering National University of Defense TechnologyChangshaChina Chongqing University ChongqingChina Dongguan University of Technology DongguanChina Jinan University GuangzhouChina Sun Yat-Sen University GuangzhouChina Harbin Institute of Technology HarbinChina University of Science and Technology of China HefeiChina The Radiochemistry and Nuclear Chemistry Group in University of South China HengyangChina Wuyi University JiangmenChina Shandong University JinanChinaand Key Laboratory of Particle Physics and Particle Irradiation of Ministry of EducationShandong UniversityQingdaoChina Institute of Modern Physics Chinese Academy of SciencesLanzhouChina Nanjing University NanjingChina Guangxi University NanningChina East China University of Science and Technology ShanghaiChina School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghaiChina Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghaiChina Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuangChina Nankai University TianjinChina Wuhan University WuhanChina Xi'an Jiaotong University Xi'anChina Xiamen University XiamenChina School of Physics and Microelectronics Zhengzhou UniversityZhengzhou

JUNO is a multi-purpose neutrino observatory under construction in the south of China.This publication presents new sensitivity estimates for the measurement of the △m_(31)^(2),△m_(21)^(2),sin^(2)θ_(12),and sin^(2)θ_(13) oscillation parameters using reactor antineutrinos,which is one of the primary physics goals of the experiment.The sensitivities are obtained using the best knowledge available to date on the location and overburden of the experimental site,the nuclear reactors in the surrounding area and beyond,the detector response uncertainties,and the reactor antineutrino spectral shape constraints expected from the TAO satellite detector.It is found that the △m_(21)^(2) and sin^(2)θ_(12) oscillation parameters will be determined to 0.5%precision or better in six years of data collection.In the same period,the △m_(31)^(2) parameter will be determined to about 0.2%precision for each mass ordering hypothesis.The new precision represents approximately an order of magnitude improvement over existing constraints for these three parameters.

关键词： neutrino oscillation reactor antineutrino precision measurement JUNO

Symmetry Restoration by Acceleration

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Journal of Modern Physics 2012年第11期3卷 1703-1708页

作者： Paolo Castorina Marco Finocchiaro dipartimento di Fisica Università di Catania Catania Italia INFN sezione di Catania Università di Catania Catania Italia

The restoration of spontaneous symmetry breaking for a scalar field theory for an accelerated observer is discussed by the one-loop effective potential calculation and by considering the effective potential for composite operators. Above a critical acceleration, corresponding to the critical restoration temperature, Tc, for a Minkowski observer by Unruh relation, i.e. ac/2π=Tc, the symmetry is restored. This result confirms other recent calculations in effective field theories that symmetry restoration can occur for an observer with an acceleration larger than some critical value. From the physical point of view, a constant acceleration mimics a gravitational field and the critical acceleration to restore the spontaneous symmetry breaking corresponds to a huge gravitational effect which prevents boson condensation.

关键词： Unruh Effect Symmetry Breaking Symmetry Restoration Accelerated Frames

A Quantum Field Theory Toy-Model for Magnetic Epigenetic

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Journal of Modern Physics 2013年第8期4卷 1133-1138页

作者： Fabio Burigana Euro Spallucci Claudio Verzegnassi AMEC (Association for Medicine and Complexity) Trieste Italy dipartimento di Fisica Sezione Teorica Università di Trieste and INFN Trieste Italy dipartimento di Fisica Sezione Teorica Università di Trieste and INFN Trieste Udine Italy

We consider the effects that a magnetic field has on the observable properties of an elementary one-fermion state, assumed for simplicity to be that of one electron. We show that for a weak intensity of the field these effects can be very simply computed in a quantum field theory theoretical framework, assuming the minimal form of the electromagnetic interaction and the validity of the dirac equation. The effects proceed via preliminary, magnetic field induced, modification of the four components of the spinor field. These generate consequent modifications of the various observable properties of the fermion, which can always be simply expressed in terms of the four spinor field components. A few general features of the various effects are discussed, and a number of possible analogies with the fascinating medical description of the epigenetic process for an organic cell are finally proposed.

关键词： Epigenetics Quantum Field Theory dirac Equation

Immunosuppressive treatment and radiotherapy in kidney transplant patients:A systematic review

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World Journal of Radiology 2022年第3期14卷 60-69页

作者： Valentina Lancellotta Andrea D'Aviero Bruno Fionda Calogero Casà Ilaria Esposito Francesco Preziosi Anna Acampora Fabio Marazzi György Kovács Barbara Alicja Jereczek-Fossa Alessio Giuseppe Morganti Vincenzo Valentini Maria Antonietta Gambacorta Jacopo Romagnoli Luca Tagliaferri UOC Radioterapia Oncologica Dipartimento di Diagnostica per ImmaginiRadioterapia Oncologica ed EmatologiaFondazione Policlinico Universitario A.Gemelli IRCCSRome 00168RomeItaly sezione di Igiene Dipartimento Universitario di Scienze della Vita e SanitàPubblicaUniversitàCattolica del Sacro CuoreRome 00168RomeItaly UniversitàCattolica del Sacro Cuore Gemelli-INTERACTSRome00168 RomeItaly Department of Oncology and Hemato-oncology European Institute of OncologyUniversity of MilanMilan 20141Italy Radiotherapy Center IRCCS Azienda Ospedaliero-Universitaria di BolognaBologna 40121Italy Renal Transplant Unit Fondazione Policlinico Universitario A.Gemelli IRCCSRome 00168RomeItaly

BACKGROUND Immunosuppression(IS)therapy may contribute to cancer development.Some authors have proposed to reduce immunosuppression drugs dose in case of viral infections,in immunosuppression-related diseases,and in patients undergoing radiotherapy.The present analysis reports the results of a systematic review on kidney transplant recipients undergoing immunosuppression and radiotherapy.AIM To define if it is necessary reduce immunosuppression drugs during radiotherapy.METHODS The literature search was based on three electronic databases(Pubmed,Scopus,and Web of Science)using selected keywords linked through the"AND"and"OR"Boolean operators to build specific strings for each electronic search engine.Two researchers independently screened the citations,and disagreement was resolved by discussion or through the intervention of a third author.The review was conducted and reported according to the PRISMA statement.Extracted data were narratively synthesized,and,where possible,frequencies,percentages,and ranges were calculated.RESULTS The literature search resulted in 147 citations.After abstracts screening,21 records were selected for full-text evaluation.Fifteen of these were excluded,leaving six papers considered suitable for analysis.There is still no clear evidence that withdrawing antimetabolites and/or calcineurin inhibitors and/or mammalian target of rapamycin-inhibitors,as opposed to continuing maintenance IS,improves patient survival in kidney transplant recipients with cancer undergoing radiotherapy.Only few retrospective studies on small cancer patient cohorts are available in this setting,but without comparison of different immunosuppression treatments.Even where immunosuppression therapy was described,patient survival seemed to be correlated only with cancer stage and type.CONCLUSION The results of this systematic review do not support the reduction of immunosuppression dose in patients undergoing radiotherapy.

关键词： Renal transplant patients Graft rejection Immunosuppression Radiotherapy Survival

Gravitational wave astronomy

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Frontiers of physics 2013年第6期8卷 771-793页

作者： Gabriela Gonzalez Andrea Vicere Linqing Wen Department of Physics and Astronomy Louisiana State University Baton Rouge LA 70803 USA INFN Sezione di Firenze 1-50019 Sesto Fiorentino and Universitd degli Studi di Urbino 'Carlo Bo' 1-61029 Urbino Italy School of Physics The University of Western Australia 35 Stirling Hwy Crawley WA 6009 Australia

We are entering a new era of gravitational-wave astronomy. The ground-based interferometers have reached their initial design sensitivity in the audio band. Several upper limits have been set for anticipated astrophysical sources from the science data. The advanced detectors in the US and in Europe are expected to be operational around 2015. New advanced detectors are also planned in Japan and in India. The first direct detections of gravitational waves are expected within this decade. In the meanwhile, three pulsar timing array projects are forming an international collaboration to detect gravitational waves directly in the nanoHertz range using timing data from millisecond pulsars. The first direct detection of nanoHertz gravitational waves are also expected within this decade. In this paper, we review the status of current gravitational-wave detectors, possible types of sources, observational upper limits achieved, and future prospects for direct detection of gravitational waves.

关键词：引力波探测器天文学毫秒脉冲星计时直接检测天体物理科学数据国际合作直接探测

RED ESCRIPTION OF PRAON DORSALE (HALIDAY 1833) AND RESURRECTION OF PRAON LONGICORNE MARSHALL 1891:A STATISTICAL ANALYSIS OF MORPHOLOGICAL DATA(Hymenoptera:Braconidae)

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Entomotaxonomia 1986年第Z1期 31-41页

作者： E.Tremblay,F.Pennacchio,L.Matrone,D.Piccolo Portici Istituto di Entomologia agraria dell'Universita di Napoli Portici Istituto di Entomologia agraria dell'Universita di Napoli Portici sezione Statistica Centro Specilizzazionee Ricerche Portici sezione Statistica Centro Specilizzazionee Ricerche

Specimens of a Praon species obtained in Italy from the large filbert aphid Corylobium avellanae Schrk. were compared with the British Museum types of Praon dorsale (Haliday 1833), and Praon longicorne Marshall 1891, the former recently considered a senior synonym of the latter. The comparison was carried out by utilizing two multivariate statistical approaches: Andrews plots and cluster analysis. Andrews plots have proven successful in morphometric comparison in anthropology between single human fossil specimens and series of individuals belonging to ape and human populations. The analysis were based on 11 morphological characters and 6 ratios between them. The comparison showed that the B.M. type of P. dorsale is homogeneous with the Italian population from C. avellanae,whereas the B.M. type of P. longicorne is characterized by morphological features which keep it separate from P. dorsale. A redescription of both species based on their well-preserved holotypes is given.

关键词： Redescription of two Praon species.

Exclusive semileptonic decays of D and Ds mesons in the covariant confining quark model

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Frontiers of physics 2019年第6期14卷 103-132页

作者： M.A.Ivanov J.G.Korner J.N.Pandya P.Santorelli N.R.Soni C.T.Tran Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear Research141980 DubnaRussia PRISMA Cluster of Excellence Institut für PhysikJohannes Gutenberg-UniversitatD-55099 MainzGermany Applied Physics Department Faculty of Technology and EngineeringThe Maharaja Sayajirao University of BarodaVadodara 390001GujaratIndia dipartimento di Fisica"E.Pancini" Universitàdi Napoli FedericoⅡComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126 NapoliItaly Istituto Nazionale di Fisica Nucleare Sezione di Napoli80126 NapoliItaly

Recently,the BESⅢcollaboration has reported numerous measurements of various D(s)meson semileptonic decays with significantly improved precision.Together with similar studies carried out at BABAR,Belle,and CLEO,new windows to a better understanding of weak and strong interactions in the charm sector have been opened.In light of new experimental data,we review the theoretical description and predictions for the semileptonic decays of D(s)to a pseudoscalar or a vector meson.This review is essentially an extended discussion of our recently published results obtained in the framework of the covariant confining quark model.

关键词： covariant quark model semileptonic decay charmed meson form factor angular distribution