Light-flavor particle production in high-multiplicity pp collisions at $$ \sqrt{\textrm{s}} $$ = 13 TeV as a function of transverse spherocity

Author:

,Acharya S.,Adamová D.,Aglieri Rinella G.,Agnello M.,Agrawal N.,Ahammed Z.,Ahmad S.,Ahn S. U.,Ahuja I.,Akindinov A.,Al-Turany M.,Aleksandrov D.,Alessandro B.,Alfanda H. M.,Alfaro Molina R.,Ali B.,Alici A.,Alizadehvandchali N.,Alkin A.,Alme J.,Alocco G.,Alt T.,Altamura A. R.,Altsybeev I.,Alvarado J. R.,Anaam M. N.,Andrei C.,Andreou N.,Andronic A.,Anguelov V.,Antinori F.,Antonioli P.,Apadula N.,Aphecetche L.,Appelshäuser H.,Arata C.,Arcelli S.,Aresti M.,Arnaldi R.,Arneiro J. G. M. C. A.,Arsene I. C.,Arslandok M.,Augustinus A.,Averbeck R.,Azmi M. D.,Baba H.,Badalà A.,Bae J.,Baek Y. W.,Bai X.,Bailhache R.,Bailung Y.,Balbino A.,Baldisseri A.,Balis B.,Banerjee D.,Banoo Z.,Barbera R.,Barile F.,Barioglio L.,Barlou M.,Barman B.,Barnaföldi G. G.,Barnby L. S.,Barret V.,Barreto L.,Bartels C.,Barth K.,Bartsch E.,Bastid N.,Basu S.,Batigne G.,Battistini D.,Batyunya B.,Bauri D.,Bazo Alba J. L.,Bearden I. G.,Beattie C.,Becht P.,Behera D.,Belikov I.,Bell Hechavarria A. D. C.,Bellini F.,Bellwied R.,Belokurova S.,Beltran Y. A. V.,Bencedi G.,Beole S.,Berdnikov Y.,Berdnikova A.,Bergmann L.,Besoiu M. G.,Betev L.,Bhaduri P. P.,Bhasin A.,Bhat M. A.,Bhattacharjee B.,Bianchi L.,Bianchi N.,Bielčík J.,Bielčíková J.,Biernat J.,Bigot A. P.,Bilandzic A.,Biro G.,Biswas S.,Bize N.,Blair J. T.,Blau D.,Blidaru M. B.,Bluhme N.,Blume C.,Boca G.,Bock F.,Bodova T.,Bogdanov A.,Boi S.,Bok J.,Boldizsár L.,Bombara M.,Bond P. M.,Bonomi G.,Borel H.,Borissov A.,Borquez Carcamo A. G.,Bossi H.,Botta E.,Bouziani Y. E. M.,Bratrud L.,Braun-Munzinger P.,Bregant M.,Broz M.,Bruno G. E.,Buckland M. D.,Budnikov D.,Buesching H.,Bufalino S.,Buhler P.,Burmasov N.,Buthelezi Z.,Bylinkin A.,Bysiak S. A.,Cai M.,Caines H.,Caliva A.,Calvo Villar E.,Camacho J. M. M.,Camerini P.,Canedo F. D. M.,Cantway S. L.,Carabas M.,Carballo A. A.,Carnesecchi F.,Caron R.,Carvalho L. A. D.,Castillo Castellanos J.,Catalano F.,Ceballos Sanchez C.,Chakaberia I.,Chakraborty P.,Chandra S.,Chapeland S.,Chartier M.,Chattopadhyay S.,Chattopadhyay S.,Cheng T.,Cheshkov C.,Cheynis B.,Chibante Barroso V.,Chinellato D. D.,Chizzali E. S.,Cho J.,Cho S.,Chochula P.,Choudhury D.,Christakoglou P.,Christensen C. H.,Christiansen P.,Chujo T.,Ciacco M.,Cicalo C.,Cindolo F.,Ciupek M. R.,Clai G.,Colamaria F.,Colburn J. S.,Colella D.,Colocci M.,Concas M.,Conesa Balbastre G.,Conesa del Valle Z.,Contin G.,Contreras J. G.,Coquet M. L.,Cortese P.,Cosentino M. R.,Costa F.,Costanza S.,Cot C.,Crkovská J.,Crochet P.,Cruz-Torres R.,Cui P.,Dainese A.,Danisch M. C.,Danu A.,Das P.,Das P.,Das S.,Dash A. R.,Dash S.,De Caro A.,de Cataldo G.,de Cuveland J.,De Falco A.,De Gruttola D.,De Marco N.,De Martin C.,De Pasquale S.,Deb R.,Del Grande R.,Dello Stritto L.,Deng W.,Dhankher P.,Di Bari D.,Di Mauro A.,Diab B.,Diaz R. A.,Dietel T.,Ding Y.,Ditzel J.,Divià R.,Dixit D. U.,Djuvsland Ø.,Dmitrieva U.,Dobrin A.,Dönigus B.,Dubinski J. M.,Dubla A.,Dudi S.,Dupieux P.,Durkac M.,Dzalaiova N.,Eder T. M.,Ehlers R. J.,Eisenhut F.,Ejima R.,Elia D.,Erazmus B.,Ercolessi F.,Espagnon B.,Eulisse G.,Evans D.,Evdokimov S.,Fabbietti L.,Faggin M.,Faivre J.,Fan F.,Fan W.,Fantoni A.,Fasel M.,Feliciello A.,Feofilov G.,Fernández Téllez A.,Ferrandi L.,Ferrer M. B.,Ferrero A.,Ferrero C.,Ferretti A.,Feuillard V. J. G.,Filova V.,Finogeev D.,Fionda F. M.,Flatland E.,Flor F.,Flores A. N.,Foertsch S.,Fokin I.,Fokin S.,Fragiacomo E.,Frajna E.,Fuchs U.,Funicello N.,Furget C.,Furs A.,Fusayasu T.,Gaardhøje J. J.,Gagliardi M.,Gago A. M.,Gahlaut T.,Galvan C. D.,Gangadharan D. R.,Ganoti P.,Garabatos C.,García Chávez T.,Garcia-Solis E.,Gargiulo C.,Gasik P.,Gautam A.,Gay Ducati M. B.,Germain M.,Ghimouz A.,Ghosh C.,Giacalone M.,Gioachin G.,Giubellino P.,Giubilato P.,Glaenzer A. M. C.,Glässel P.,Glimos E.,Goh D. J. Q.,Gonzalez V.,Gordeev P.,Gorgon M.,Goswami K.,Gotovac S.,Grabski V.,Graczykowski L. K.,Grecka E.,Grelli A.,Grigoras C.,Grigoriev V.,Grigoryan S.,Grosa F.,Grosse-Oetringhaus J. F.,Grosso R.,Grund D.,Grunwald N. A.,Guardiano G. G.,Guernane R.,Guilbaud M.,Gulbrandsen K.,Gündem T.,Gunji T.,Guo W.,Gupta A.,Gupta R.,Gupta R.,Gwizdziel K.,Gyulai L.,Hadjidakis C.,Haider F. U.,Haidlova S.,Hamagaki H.,Hamdi A.,Han Y.,Hanley B. G.,Hannigan R.,Hansen J.,Haque M. R.,Harris J. W.,Harton A.,Hassan H.,Hatzifotiadou D.,Hauer P.,Havener L. B.,Heckel S. T.,Hellbär E.,Helstrup H.,Hemmer M.,Herman T.,Herrera Corral G.,Herrmann F.,Herrmann S.,Hetland K. F.,Heybeck B.,Hillemanns H.,Hippolyte B.,Hoffmann F. W.,Hofman B.,Hong G. H.,Horst M.,Horzyk A.,Hou Y.,Hristov P.,Hughes C.,Huhn P.,Huhta L. M.,Humanic T. J.,Hutson A.,Hutter D.,Ilkaev R.,Ilyas H.,Inaba M.,Innocenti G. M.,Ippolitov M.,Isakov A.,Isidori T.,Islam M. S.,Ivanov M.,Ivanov M.,Ivanov V.,Iversen K. E.,Jablonski M.,Jacak B.,Jacazio N.,Jacobs P. M.,Jadlovska S.,Jadlovsky J.,Jaelani S.,Jahnke C.,Jakubowska M. J.,Janik M. A.,Janson T.,Ji S.,Jia S.,Jimenez A. A. P.,Jonas F.,Jones D. M.,Jowett J. M.,Jung J.,Jung M.,Junique A.,Jusko A.,Kaewjai J.,Kalinak P.,Kalteyer A. S.,Kalweit A.,Kaplin V.,Karasu Uysal A.,Karatovic D.,Karavichev O.,Karavicheva T.,Karczmarczyk P.,Karpechev E.,Karwowska M. J.,Kebschull U.,Keidel R.,Keijdener D. L. D.,Keil M.,Ketzer B.,Khade S. S.,Khan A. M.,Khan S.,Khanzadeev A.,Kharlov Y.,Khatun A.,Khuntia A.,Kileng B.,Kim B.,Kim C.,Kim D. J.,Kim E. J.,Kim J.,Kim J. S.,Kim J.,Kim J.,Kim M.,Kim S.,Kim T.,Kimura K.,Kirsch S.,Kisel I.,Kiselev S.,Kisiel A.,Kitowski J. P.,Klay J. L.,Klein J.,Klein S.,Klein-Bösing C.,Kleiner M.,Klemenz T.,Kluge A.,Knospe A. G.,Kobdaj C.,Kollegger T.,Kondratyev A.,Kondratyeva N.,Kondratyuk E.,Konig J.,Konigstorfer S. A.,Konopka P. J.,Kornakov G.,Korwieser M.,Koryciak S. D.,Kotliarov A.,Kovalenko V.,Kowalski M.,Kozhuharov V.,Králik I.,Kravčáková A.,Krcal L.,Krivda M.,Krizek F.,Krizkova Gajdosova K.,Kroesen M.,Krüger M.,Krupova D. M.,Kryshen E.,Kučera V.,Kuhn C.,Kuijer P. G.,Kumaoka T.,Kumar D.,Kumar L.,Kumar N.,Kumar S.,Kundu S.,Kurashvili P.,Kurepin A.,Kurepin A. B.,Kuryakin A.,Kushpil S.,Kuskov V.,Kweon M. J.,Kwon Y.,La Pointe S. L.,La Rocca P.,Lakrathok A.,Lamanna M.,Landou A. R.,Langoy R.,Larionov P.,Laudi E.,Lautner L.,Lavicka R.,Lea R.,Lee H.,Legrand I.,Legras G.,Lehrbach J.,Lelek T. M.,Lemmon R. C.,León Monzón I.,Lesch M. M.,Lesser E. D.,Lévai P.,Li X.,Lien J.,Lietava R.,Likmeta I.,Lim B.,Lim S. H.,Lindenstruth V.,Lindner A.,Lippmann C.,Liu D. H.,Liu J.,Liveraro G. S. S.,Lofnes I. M.,Loizides C.,Lokos S.,Lömker J.,Loncar P.,Lopez X.,López Torres E.,Lu P.,Lugo F. V.,Luhder J. R.,Lunardon M.,Luparello G.,Ma Y. G.,Mager M.,Maire A.,Majerz E. M.,Makariev M. V.,Malaev M.,Malfattore G.,Malik N. M.,Malik Q. W.,Malik S. K.,Malinina L.,Mallick D.,Mallick N.,Mandaglio G.,Mandal S. K.,Manko V.,Manso F.,Manzari V.,Mao Y.,Marcjan R. W.,Margagliotti G. V.,Margotti A.,Marín A.,Markert C.,Martinengo P.,Martínez M. I.,Martínez García G.,Martins M. P. P.,Masciocchi S.,Masera M.,Masoni A.,Massacrier L.,Massen O.,Mastroserio A.,Matonoha O.,Mattiazzo S.,Matyja A.,Mayer C.,Mazuecos A. L.,Mazzaschi F.,Mazzilli M.,Mdhluli J. E.,Melikyan Y.,Menchaca-Rocha A.,Mendez J. E. M.,Meninno E.,Menon A. S.,Meres M.,Mhlanga S.,Miake Y.,Micheletti L.,Mihaylov D. L.,Mikhaylov K.,Mishra A. N.,Miśkowiec D.,Modak A.,Mohanty B.,Mohisin Khan M.,Molander M. A.,Monira S.,Mordasini C.,Moreira De Godoy D. A.,Morozov I.,Morsch A.,Mrnjavac T.,Muccifora V.,Muhuri S.,Mulligan J. D.,Mulliri A.,Munhoz M. G.,Munzer R. H.,Murakami H.,Murray S.,Musa L.,Musinsky J.,Myrcha J. W.,Naik B.,Nambrath A. I.,Nandi B. K.,Nania R.,Nappi E.,Nassirpour A. F.,Nath A.,Nattrass C.,Naydenov M. N.,Neagu A.,Negru A.,Nekrasova E.,Nellen L.,Nepeivoda R.,Nese S.,Neskovic G.,Nicassio N.,Nielsen B. S.,Nielsen E. G.,Nikolaev S.,Nikulin S.,Nikulin V.,Noferini F.,Noh S.,Nomokonov P.,Norman J.,Novitzky N.,Nowakowski P.,Nyanin A.,Nystrand J.,Ogino M.,Oh S.,Ohlson A.,Okorokov V. A.,Oleniacz J.,Oliveira Da Silva A. C.,Onnerstad A.,Oppedisano C.,Ortiz Velasquez A.,Otwinowski J.,Oya M.,Oyama K.,Pachmayer Y.,Padhan S.,Pagano D.,Paić G.,Paisano-Guzmán S.,Palasciano A.,Panebianco S.,Park H.,Park H.,Park J.,Parkkila J. E.,Patley Y.,Patra R. N.,Paul B.,Pei H.,Peitzmann T.,Peng X.,Pennisi M.,Perciballi S.,Peresunko D.,Perez G. M.,Pestov Y.,Petrov V.,Petrovici M.,Pezzi R. P.,Piano S.,Pikna M.,Pillot P.,Pinazza O.,Pinsky L.,Pinto C.,Pisano S.,Płoskoń M.,Planinic M.,Pliquett F.,Poghosyan M. G.,Polichtchouk B.,Politano S.,Poljak N.,Pop A.,Porteboeuf-Houssais S.,Pozdniakov V.,Pozos I. Y.,Pradhan K. K.,Prasad S. K.,Prasad S.,Preghenella R.,Prino F.,Pruneau C. A.,Pshenichnov I.,Puccio M.,Pucillo S.,Pugelova Z.,Qiu S.,Quaglia L.,Ragoni S.,Rai A.,Rakotozafindrabe A.,Ramello L.,Rami F.,Rancien T. A.,Rasa M.,Räsänen S. S.,Rath R.,Rauch M. P.,Ravasenga I.,Read K. F.,Reckziegel C.,Redelbach A. R.,Redlich K.,Reetz C. A.,Regules-Medel H. D.,Rehman A.,Reidt F.,Reme-Ness H. A.,Rescakova Z.,Reygers K.,Riabov A.,Riabov V.,Ricci R.,Richter M.,Riedel A. A.,Riegler W.,Riffero A. G.,Ristea C.,Rodriguez M. V.,Rodríguez Cahuantzi M.,Rodríguez Ramírez S. A.,Røed K.,Rogalev R.,Rogochaya E.,Rogoschinski T. S.,Rohr D.,Röhrich D.,Rojas P. F.,Rojas Torres S.,Rokita P. S.,Romanenko G.,Ronchetti F.,Rosano A.,Rosas E. D.,Roslon K.,Rossi A.,Roy A.,Roy S.,Rubini N.,Ruggiano D.,Rui R.,Russek P. G.,Russo R.,Rustamov A.,Ryabinkin E.,Ryabov Y.,Rybicki A.,Rytkonen H.,Ryu J.,Rzesa W.,Saarimaki O. A. M.,Sadhu S.,Sadovsky S.,Saetre J.,Šafařík K.,Saha P.,Saha S. K.,Saha S.,Sahoo B.,Sahoo B.,Sahoo R.,Sahoo S.,Sahu D.,Sahu P. K.,Saini J.,Sajdakova K.,Sakai S.,Salvan M. P.,Sambyal S.,Samitz D.,Sanna I.,Saramela T. B.,Sarma P.,Sarritzu V.,Sarti V. M.,Sas M. H. P.,Sawan S.,Schambach J.,Scheid H. S.,Schiaua C.,Schicker R.,Schlepper F.,Schmah A.,Schmidt C.,Schmidt H. R.,Schmidt M. O.,Schmidt M.,Schmidt N. V.,Schmier A. R.,Schotter R.,Schröter A.,Schukraft J.,Schweda K.,Scioli G.,Scomparin E.,Seger J. E.,Sekiguchi Y.,Sekihata D.,Selina M.,Selyuzhenkov I.,Senyukov S.,Seo J. J.,Serebryakov D.,Šerkšnytė L.,Sevcenco A.,Shaba T. J.,Shabetai A.,Shahoyan R.,Shangaraev A.,Sharma A.,Sharma B.,Sharma D.,Sharma H.,Sharma M.,Sharma S.,Sharma S.,Sharma U.,Shatat A.,Sheibani O.,Shigaki K.,Shimomura M.,Shin J.,Shirinkin S.,Shou Q.,Sibiriak Y.,Siddhanta S.,Siemiarczuk T.,Silva T. F.,Silvermyr D.,Simantathammakul T.,Simeonov R.,Singh B.,Singh B.,Singh K.,Singh R.,Singh R.,Singh R.,Singh S.,Singh V. K.,Singhal V.,Sinha T.,Sitar B.,Sitta M.,Skaali T. B.,Skorodumovs G.,Slupecki M.,Smirnov N.,Snellings R. J. M.,Solheim E. H.,Song J.,Sonnabend C.,Soramel F.,Soto-hernandez A. B.,Spijkers R.,Sputowska I.,Staa J.,Stachel J.,Stan I.,Steffanic P. J.,Stiefelmaier S. F.,Stocco D.,Storehaug I.,Stratmann P.,Strazzi S.,Sturniolo A.,Stylianidis C. P.,Suaide A. A. P.,Suire C.,Sukhanov M.,Suljic M.,Sultanov R.,Sumberia V.,Sumowidagdo S.,Swain S.,Szarka I.,Szymkowski M.,Taghavi S. F.,Taillepied G.,Takahashi J.,Tambave G. J.,Tang S.,Tang Z.,Tapia Takaki J. D.,Tapus N.,Tarasovicova L. A.,Tarzila M. G.,Tassielli G. F.,Tauro A.,Tavira García A.,Tejeda Muñoz G.,Telesca A.,Terlizzi L.,Terrevoli C.,Thakur S.,Thomas D.,Tikhonov A.,Tiltmann N.,Timmins A. R.,Tkacik M.,Tkacik T.,Toia A.,Tokumoto R.,Tomohiro K.,Topilskaya N.,Toppi M.,Tork T.,Torres V. V.,Torres Ramos A. G.,Trifiró A.,Triolo A. S.,Tripathy S.,Tripathy T.,Trogolo S.,Trubnikov V.,Trzaska W. H.,Trzcinski T. P.,Tumkin A.,Turrisi R.,Tveter T. S.,Ullaland K.,Ulukutlu B.,Uras A.,Usai G. L.,Vala M.,Valle N.,van Doremalen L. V. R.,van Leeuwen M.,van Veen C. A.,van Weelden R. J. G.,Vande Vyvre P.,Varga D.,Varga Z.,Vargas Torres P.,Vasileiou M.,Vasiliev A.,Vázquez Doce O.,Vazquez Rueda O.,Vechernin V.,Vercellin E.,Vergara Limón S.,Verma R.,Vermunt L.,Vértesi R.,Verweij M.,Vickovic L.,Vilakazi Z.,Villalobos Baillie O.,Villani A.,Vinogradov A.,Virgili T.,Virta M. M. O.,Vislavicius V.,Vodopyanov A.,Volkel B.,Völkl M. A.,Voloshin K.,Voloshin S. A.,Volpe G.,von Haller B.,Vorobyev I.,Vozniuk N.,Vrláková J.,Wan J.,Wang C.,Wang D.,Wang Y.,Wang Y.,Wegrzynek A.,Weiglhofer F. T.,Wenzel S. C.,Wessels J. P.,Wiechula J.,Wikne J.,Wilk G.,Wilkinson J.,Willems G. A.,Windelband B.,Winn M.,Wright J. R.,Wu W.,Wu Y.,Xu R.,Yadav A.,Yadav A. K.,Yalcin S.,Yamaguchi Y.,Yang S.,Yano S.,Yin Z.,Yoo I.-K.,Yoon J. H.,Yu H.,Yuan S.,Yuncu A.,Zaccolo V.,Zampolli C.,Zanone F.,Zardoshti N.,Zarochentsev A.,Závada P.,Zaviyalov N.,Zhalov M.,Zhang B.,Zhang C.,Zhang L.,Zhang M.,Zhang S.,Zhang X.,Zhang Y.,Zhang Z.,Zhao M.,Zherebchevskii V.,Zhi Y.,Zhou D.,Zhou Y.,Zhu J.,Zhu Y.,Zugravel S. C.,Zurlo N.

Abstract

Abstract Results on the transverse spherocity dependence of light-flavor particle production (π, K, p, ϕ, K*0, $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 , Λ, Ξ) at midrapidity in high-multiplicity pp collisions at $$ \sqrt{s} $$ s = 13 TeV were obtained with the ALICE apparatus. The transverse spherocity estimator $$ \left({S}_{\textrm{O}}^{p_{\textrm{T}}=1}\right) $$ S O p T = 1 categorizes events by their azimuthal topology. Utilizing narrow selections on $$ {S}_{\textrm{O}}^{p_{\textrm{T}}=1} $$ S O p T = 1 , it is possible to contrast particle production in collisions dominated by many soft initial interactions with that observed in collisions dominated by one or more hard scatterings. Results are reported for two multiplicity estimators covering different pseudorapidity regions. The $$ {S}_{\textrm{O}}^{p_{\textrm{T}}=1} $$ S O p T = 1 estimator is found to effectively constrain the hardness of the events when the midrapidity (|η| < 0.8) estimator is used.The production rates of strange particles are found to be slightly higher for soft isotropic topologies, and severely suppressed in hard jet-like topologies. These effects are more pronounced for hadrons with larger mass and strangeness content, and observed when the topological selection is done within a narrow multiplicity interval. This demonstrates that an important aspect of the universal scaling of strangeness enhancement with final-state multiplicity is that high-multiplicity collisions are dominated by soft, isotropic processes. On the contrary, strangeness production in events with jet-like processes is significantly reduced.The results presented in this article are compared with several QCD-inspired Monte Carlo event generators. Models that incorporate a two-component phenomenology, either through mechanisms accounting for string density, or thermal production, are able to describe the observed strangeness enhancement as a function of $$ {S}_{\textrm{O}}^{p_{\textrm{T}}=1} $$ S O p T = 1 .

Publisher

Springer Science and Business Media LLC

Reference40 articles.

1. ALICE collaboration, Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions, Nat. Phys. 13 (2017) 535 [arXiv:1606.07424] [INSPIRE].

2. ALICE collaboration, Multiplicity Dependence of Pion, Kaon, Proton and Lambda Production in p-Pb Collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV, Phys. Lett. B 728 (2014) 25 [arXiv:1307.6796] [INSPIRE].

3. CMS collaboration, Evidence for collectivity in pp collisions at the LHC, Phys. Lett. B 765 (2017) 193 [arXiv:1606.06198] [INSPIRE].

4. P. Koch, B. Muller and J. Rafelski, Strangeness in Relativistic Heavy Ion Collisions, Phys. Rep. 142 (1986) 167 [INSPIRE].

5. D. Teaney, J. Lauret and E.V. Shuryak, Flow at the SPS and RHIC as a quark gluon plasma signature, Phys. Rev. Lett. 86 (2001) 4783 [nucl-th/0011058] [INSPIRE].

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3