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Search for a lighter Higgs boson in the Next-to-Minimal Supersymmetric Standard Model

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Chinese Physics C 2018年第10期42卷 51-58页

作者： Jun-Quan Tao M.Aamir Shahzad Si-Jing Zhang Chu Wang Yu-Qiao Shen Guo-Ming Chen He-Sheng Chen S.Gascon-Shotkina L.Finco C.Camen institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China Institut de physique nucleaire de Lyon Universite de LyonUniversite Claude Bernard Lyon 1CNRS-IN2P3Villeurbanne 69622France Changzhou institute of Technology Changzhou 213032China

Following the discovery of the Higgs boson with a mass of approximately 125 GeV at the LHC, many studies have been performed from both the theoretical and experimental viewpoints to search for a new Higgs Boson that is lighter than 125 GeV. We explore the possibility of constraining a lighter neutral scalar Higgs boson hi and a lighter pseudo-scalar Higgs boson al in the Next-to-Minimal Supersymmetric Standard Model by restricting the next-to-lightest scalar Higgs boson h2 to be the one observed at the LHC after applying the phenomenological constraints and those from experimental measurements. Such lighter particles are not yet completely excluded by the latest results of the search for a lighter Higgs boson in the diphoton decay channel from LHC data. Our results show that some new constraints on the Next-to-Minimal Supersymmetric Standard Model could be obtained for a lighter scalar Higgs boson at the LHC if such a search is performed by experimental collaborations and more data. The potentials of discovery for other interesting decay channels of such a lighter neutral scalar or pseudo-scalar particle are also discussed.

关键词： Next-to-Minimal Supersymmetric Standard Model lighter Higgs boson discovery potentials

X Y Z particles at BABAR

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Chinese Physics C 2010年第6期34卷 644-649页

作者： E.Prencipe LAPP-Laboratoire de Annecy de physique de Particules

This paper intends to shortly summarize the recent results on Spectroscopy, published from the BABAR Collaboration. The BABAR experiment is a B-factory, at SLAC, where asymmetric energy beams of electron-positron are accelerated and collide at the energy in the center of mass of T（4S）. In 9 years of data taking, BABAR had collected 433 fb^-1 equivalent luminosity on-peak-data at the T（4S） energy, 30 fb^-1 data at the T（3S） energy, 15 fb^-1 data at the T（2S） energy, and a scan around T（4S） was done, collecting 25 pb^-1 every 5 MeV. Thanks to the high luminosity achieved, it is possible to perform high precision measurements, and spectroscopy studies. An update on the measurement of the state X（3872） will be given, as final result published by using the whole dataset available. Then, a new preliminary Y（4260） measurement is reported, and the study of the invariant mass J/ψπ^＋π^- in ISR events is shown, where no evidence of the state Y（4050） is highlighted. As conclusion, the results on the angular distribution analysis performed on the state Z（4430） are reported.

关键词： spectroscopy charmonium BABAR

Site Selective Excitation and Energy Transfer in LiKGdF_5 Crystal Co-doped with Er^(3+) and Tb (3+)

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Journal of Rare Earths 2004年第1期22卷 22-26页

作者：尹民 Khaidukov N M Krupa J C Structure Research Laboratory Kurnakov institute of General and Inorganic Chemistry Institut de physique Nucléaire

Crystals of LiKGdF 5∶Er 3+, Tb 3+ grown by the hydrothermal synthesis technique with concentrations of 2% and 0.4% were analysed. By using site selective excitation measured at low temperature, luminescence and excitation spectra from Er 3+ and Tb 3+ ions embedded in LiKGdF 5 were clearly separated. The lifetimes of the emitting levels 4S 3/2 of Er 3+ and 5D 4 of Tb 3+ were also determined. Following the site selective spectroscopy study, the dominant energy transfer process from Tb 3+ to Er 3+ in the crystal was then investigated via transient experiments.

关键词： optics condensed matter physics energy transfer luminescence LiKGdF 5∶Er3+, Tb3+ rare earths

Prediction of energy resolution in the JUNO experiment

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Chinese Physics C 2025年第1期49卷 35-59页

作者： Angel Abusleme Thomas Adam Kai Adamowicz Shakeel Ahmad Rizwan Ahmed Sebastiano Aiello Fengpeng An Qi An Giuseppe Andronico Nikolay Anfimov Vito Antonelli Tatiana Antoshkina Joao Pedro Athayde Marcondes de André Didier Auguste Weidong Bai Nikita Balashov Wander Baldini Andrea Barresi Davide Basilico Eric Baussan Marco Bellato Marco Beretta Antonio Bergnoli Daniel Bick Lukas Bieger Svetlana Biktemerova Thilo Birkenfeld Iwan Blake David Blum Simon Blyth Anastasia Bolshakova Mathieu Bongrand Clément Bordereau Dominique Breton Augusto Brigatti Riccardo Brugnera Riccardo Bruno Antonio Budano Jose Busto Anatael Cabrera Barbara Caccianiga Hao Cai Xiao Cai Yanke Cai Zhiyan Cai Stéphane Callier Steven Calvez Antonio Cammi Agustin Campeny Chuanya Cao Guofu Cao Jun Cao Rossella Caruso Cédric Cerna Vanessa Cerrone Jinfan Chang Yun Chang Auttakit Chatrabhuti Chao Chen Guoming Chen Pingping Chen Shaomin Chen Xin Chen Yiming Chen Yixue Chen Yu Chen Zelin Chen Zhangming Chen Zhiyuan Chen Zikang Chen Jie Cheng Yaping Cheng YuChin Cheng Alexander Chepurnov Alexey Chetverikov Davide Chiesa Pietro Chimenti Yen-Ting Chin Po-Lin Chou Ziliang Chu Artem Chukanov Gérard Claverie Catia Clementi Barbara Clerbaux Marta Colomer Molla Selma Conforti Di Lorenzo Alberto Coppi Daniele Corti Simon Csakli Chenyang Cui Flavio Dal Corso Olivia Dalager Jaydeep Datta Christophe de La Taille Zhi deng Ziyan deng Xiaoyu Ding Xuefeng Ding Yayun Ding Bayu Dirgantara Carsten Dittrich Sergey Dmitrievsky Tadeas Dohnal Dmitry Dolzhikov Georgy Donchenko Jianmeng Dong Evgeny Doroshkevich Wei Dou Marcos Dracos Frédéric Druillole Ran Du Shuxian Du Katherine Dugas Stefano Dusini Hongyue Duyang Jessica Eck Timo Enqvist Andrea Fabbri Ulrike Fahrendholz Lei Fan Jian Fang Wenxing Fang Dmitry Fedoseev Li-Cheng Feng Qichun Feng Federico Ferraro Amélie Fournier Fritsch Fritsch Haonan Gan Feng Gao Feng Gao Alberto Garfagnini Arsenii Gavrikov Marco Giammarchi Nunzio Giudice Maxim Gonchar Guanghua Gong Hui Gong Yuri Gornushkin Marco Grassi Maxim Gromov Vasily Gromov Minghao G Yerevan Physics institute YerevanArmenia Université Libre de Bruxelles BrusselsBelgium Universidade Estadual de Londrina LondrinaBrazil Pontificia Universidade Catolica do Rio de Janeiro Rio de JaneiroBrazil Millennium institute for SubAtomic Physics at the High-energy Frontier(SAPHIR) ANIDChile Pontificia Universidad Católica de Chile SantiagoChile 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 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 UniversityZhengzhouChina institute of Physics National

This paper presents an energy resolution study of the JUNO experiment,incorporating the latest knowledge acquired during the detector construction *** determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 *** achieve this ambitious goal,significant efforts have been undertaken in the design and production of the key components of the JUNO *** factors affecting the detection of inverse beta decay signals have an impact on the energy resolution,extending beyond the statistical fluctuations of the detected number of photons,such as the properties of the liquid scintillator,performance of photomultiplier tubes,and the energy reconstruction *** account for these effects,a full JUNO simulation and reconstruction approach is *** enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy *** results of this study reveal an energy resolution of 2.95% at 1 ***,this study assesses the contribution of major effects to the overall energy resolution *** analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data ***,it provides a guideline for comprehending the energy resolution characteristics of liquid scintillator-based detectors.

关键词： energy resolution liquid scintillator detector JUNO simulation reconstruction

design of the readout electronics for the DAMPE Silicon Tracker detector

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Chinese Physics C 2016年第11期40卷 143-151页

作者：张飞彭文溪龚轲吴帝董亦凡乔锐樊瑞睿汪锦州王焕玉 Xin Wu Daniel La Marra Philipp Azzarello Valentina Gallo Giovanni Ambrosi Andrea,Nardinocchi institute of High Energy Physics Chinese Academy of Sciences Beijing 100049China Département de physique nucleaire et Corpusculaire University of GenevaGeneva 1211Switzerland Istituto Nazionale di Fisica Nucleare Sezione di Perugia Perugia 06100Italy Universitaa di Perugia Perugia 06100Italy

The Silicon Tracker （STK） is one of the detectors of the DAMPE satellite used to measure the incidence direction of high energy cosmic rays. It consists of 6 X-Y double layers of silicon micro-strip detectors with 73728 readout channels. It is a great challenge to read out the channels and process the huge volume of data in the harsh environment of space. 1152 Application Specific Integrated Circuits （ASIC） and 384 ADCs are used to read out the detector channels. 192 Tracker Front-end Hybrid （TFH） modules and 8 identical Tracker Readout Board （TRB） modules are designed to control and digitalize the front signals. In this paper, the design of the readout electronics for the STK and its performance are presented in detail.

关键词： DAMPE readout electronics silicon strip detector VA140

Spectroscopic analysis of high electric field enhanced ionization in laser filaments in air for corona guiding

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High Power Laser Science and Engineering 2016年第1期4卷 52-57页

作者： Yingxia Wei Yaoxiang Liu Tie-Jun Wang Na Chen Jingjing Ju Yonghong Liu Haiyi Sun Cheng Wang Jiansheng Liu Haihe Lu See Leang Chin Ruxin Li State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Centre d’Optique Photonique et Laser (COPL) and Dpartement de physiquede gnie physique et d’optiqueUniversit Laval

We report on a systematic experimental study on the fluorescence spectra produced from a femtosecond laser filament in air under a high electric field. The electric field alone was strong enough to create corona discharge(CD). Fluorescence spectra from neutral and ionic air molecules were measured and compared with pure high-voltage CD and pure laser filamentation(FIL). Among them, high electric field assisted laser FIL produced nitrogen fluorescence more efficiently than either pure CD or pure FIL processes. The nonlinear enhancement of fluorescence from the interaction of the laser filament and corona discharging electric field resulted in a more efficient ionization along the laser filament zone, which was confirmed by the spectroscopic measurement of both ionization-induced fluorescence and plasma-scattered 800 nm laser pulses. This is believed to be the key precursor process for filament-guided discharge.

关键词： femtosecond laser filamentation filament induced fluorescence spectroscopy laser guided discharges

Tomographical evidence for Indian Plate underthrusting only beneath Tethyan Himalaya

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Chinese Science Bulletin 1999年第1期44卷 86-89页

作者： A.Hirn Seismological department Institute de Physique du Globe 4 Place Jussieu 75252 Paris France

Tomographical inversion was performed using the data recorded by 51 seismographys deployed on a profile that followed southern Xizang (Tibet) high-way through a Sino-French Joint seismic experiment. The results indicate that the underthrusting Indian Plate is limited to the south of IndusYarlung Zangbo Suture (IYS) beneath Tethyan Himalaya, extends vertically to 150 km deep with relatively high angle near Gala, and becomes horizontally northward. The seismic velocities beneath Kangmar, Gangdise and Yangbajain-Golug rift in the middle of the lithosphere show low velocity features, which may indicate the existence of high temperature and partial melting. The results from tomography strongly suggest that the continent-continent subduction occurred only beneath Himalaya and was confined to the south of IYS since the collision between India and Eurasia.

关键词： Tibetan Plateau tomographical inversion Tethyan Himalaya.

Bunching and Antibunching in Cavity QED

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Communications in Theoretical Physics 2011年第7期56卷 134-138页

作者： H.Jabri H.Eleuch Dpartement de physique Facult des Sciences de Tunis institute for Quantum Studies Texas A & M UniversityCollege Station Texas University of Carthage

We study the statistics of the emitted filed from Rydberg atom confined inside a microcavity and interacting with a pump laser in the strong coupling regime. We explore the manifestation of the antibunching in connect... 详细信息

关键词： quantum fluctuations quantum noise photon statistics cavity quantum electrodynamics

Solving the Dirac Equation with Nonlocal Potential by Imaginary Time Step Method

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Chinese Physics Letters 2009年第9期26卷 93-96页

作者：张颖梁豪兆孟杰 State Key Lab of Nuclear Physics and Technology School of Physics Peking University Beijing 100871 Institut de physique nucleaire IN2P3-CNRS and Universite Paris-Sud F-91406 Orsay Cedex France department of Physics University of Stellenbosch Stellenbosch South Africa

The imaginary time step （ITS） method is applied to solve the Dirac equation with the nonlocal potential in coordinate space by the ITS evolution for the corresponding Schrfdinger-like equation for the upper component. It is demonstrated that the ITS evolution can be equivalently performed for the Schrodinger-like equation with or without localization. The latter algorithm is recommended in the application for the reason of simplicity and efficiency. The feasibility and reliability of this algorithm are also illustrated by taking the nucleus ^16O as an example, where the same results as the shooting method for the Dirae equation with localized effective potentials are obtained.

关键词： sea surface nonliear interaction numerical method