Acharya S, Adamová D, Adler A, Aglieri Rinella G, Agnello M, Agrawal N, Ahammed Z, Ahmad S, Ahn S U, Ahuja I, Akbar Z, Akindinov A, Al-Turany M, Alam S N, Aleksandrov D, Alessandro B, Alfanda H M, Alfaro Molina R, Ali B, Ali Y, Alici A, Alizadehvandchali N, Alkin A, Alme J, Alt T, Altenkamper L, Altsybeev I, Anaam M N, Andrei C, Andreou D, Andronic A, Angeletti M, Anguelov V, Antinori F, Antonioli P, Anuj C, Apadula N, Aphecetche L, Appelshäuser H, Arcelli S, Arnaldi R, Arsene I C, Arslandok M, Augustinus A, Averbeck R, Aziz S, Azmi M D, Badalà A, Baek Y W, Bai X, Bailhache R, Bailung Y, Bala R, Balbino A, Baldisseri A, Balis B, Ball M, Banerjee D, Barbera R, Barioglio L, Barlou M, Barnaföldi G G, Barnby L S, Barret V, Bartels C, Barth K, Bartsch E, Baruffaldi F, Bastid N, Basu S, Batigne G, Batyunya B, Bauri D, Bazo Alba J L, Bearden I G, Beattie C, Belikov I, Bell Hechavarria A D C, Bellini F, Bellwied R, Belokurova S, Belyaev V, Bencedi G, Beole S, Bercuci A, Berdnikov Y, Berdnikova A, Bergmann L, Besoiu M G, Betev L, Bhaduri P P, Bhasin A, Bhat I R, Bhat M A, Bhattacharjee B, Bhattacharya P, Bianchi L, Bianchi N, Bielčík J, Bielčíková J, Biernat J, Bilandzic A, Biro G, Biswas S, Blair J T, Blau D, Blidaru M B, Blume C, Boca G, Bock F, Bogdanov A, Boi S, Bok J, Boldizsár L, Bolozdynya A, Bombara M, Bond P M, Bonomi G, Borel H, Borissov A, Bossi H, Botta E, Bratrud L, Braun-Munzinger P, Bregant M, Broz M, Bruno G E, Buckland M D, Budnikov D, Buesching H, Bufalino S, Bugnon O, Buhler P, Buthelezi Z, Butt J B, Bysiak S A, Cai M, Caines H, Caliva A, Calvo Villar E, Camacho J M M, Camacho R S, Camerini P, Canedo F D M, Carnesecchi F, Caron R, Castillo Castellanos J, Casula E A R, Catalano F, Ceballos Sanchez C, Chakraborty P, Chandra S, Chapeland S, Chartier M, Chattopadhyay S, Chattopadhyay S, Chauvin A, Chavez T G, Cheng T, Cheshkov C, Cheynis B, Chibante Barroso V, Chinellato D D, Cho S, Chochula P, Christakoglou P, Christensen C H, Christiansen P, Chujo T, Cicalo C, Cifarelli L, Cindolo F, Ciupek M R, Clai G, Cleymans J, Colamaria F, Colburn J S, Colella D, Collu A, Colocci M, Concas M, Conesa Balbastre G, Conesa Del Valle Z, Contin G, Contreras J G, Coquet M L, Cormier T M, Cortese P, Cosentino M R, Costa F, Costanza S, Crochet P, Cruz-Torres R, Cuautle E, Cui P, Cunqueiro L, Dainese A, Danisch M C, Danu A, Das I, Das P, Das P, Das S, Dash S, De S, De Caro A, de Cataldo G, De Cilladi L, de Cuveland J, De Falco A, De Gruttola D, De Marco N, De Martin C, De Pasquale S, Deb S, Degenhardt H F, Deja K R, Dello Stritto L, Delsanto S, Deng W, Dhankher P, Di Bari D, Di Mauro A, Diaz R A, Dietel T, Ding Y, Divià R, Dixit D U, Djuvsland Ø, Dmitrieva U, Do J, Dobrin A, Dönigus B, Dordic O, Dubey A K, Dubla A, Dudi S, Dukhishyam M, Dupieux P, Dzalaiova N, Eder T M, Ehlers R J, Eikeland V N, Eisenhut F, Elia D, Erazmus B, Ercolessi F, Erhardt F, Erokhin A, Ersdal M R, Espagnon B, Eulisse G, Evans D, Evdokimov S, Fabbietti L, Faggin M, Faivre J, Fan F, Fantoni A, Fasel M, Fecchio P, Feliciello A, Feofilov G, Fernández Téllez A, Ferrero A, Ferretti A, Feuillard V J G, Figiel J, Filchagin S, Finogeev D, Fionda F M, Fiorenza G, Flor F, Flores A N, Foertsch S, Foka P, Fokin S, Fragiacomo E, Frajna E, Fuchs U, Funicello N, Furget C, Furs A, Gaardhøje J J, Gagliardi M, Gago A M, Gal A, Galvan C D, Ganoti P, Garabatos C, Garcia J R A, Garcia-Solis E, Garg K, Gargiulo C, Garibli A, Garner K, Gasik P, Gauger E F, Gautam A, Gay Ducati M B, Germain M, Ghosh P, Ghosh S K, Giacalone M, Gianotti P, Giubellino P, Giubilato P, Glaenzer A M C, Glässel P, Goh D J Q, Gonzalez V, González-Trueba L H, Gorbunov S, Gorgon M, Görlich L, Gotovac S, Grabski V, Graczykowski L K, Greiner L, Grelli A, Grigoras C, Grigoriev V, Grigoryan S, Groettvik O S, Grosa F, Grosse-Oetringhaus J F, Grosso R, Guardiano G G, Guernane R, Guilbaud M, Gulbrandsen K, Gunji T, Guo W, Gupta A, Gupta R, Guzman S P, Gyulai L, Habib M K, Hadjidakis C, Halimoglu G, Hamagaki H, Hamar G, Hamid M, Hannigan R, Haque M R, Harlenderova A, Harris J W, Harton A, Hasenbichler J A, Hassan H, Hatzifotiadou D, Hauer P, Havener L B, Hayashi S, Heckel S T, Hellbär E, Helstrup H, Herman T, Hernandez E G, Herrera Corral G, Herrmann F, Hetland K F, Hillemanns H, Hills C, Hippolyte B, Hofman B, Hohlweger B, Honermann J, Hong G H, Horak D, Hornung S, Horzyk A, Hosokawa R, Hou Y, Hristov P, Hughes C, Huhn P, Humanic T J, Hushnud H, Husova L A, Hutson A, Hutter D, Iddon J P, Ilkaev R, Ilyas H, Inaba M, Innocenti G M, Ippolitov M, Isakov A, Islam M S, Ivanov M, Ivanov V, Izucheev V, Jablonski M, Jacak B, Jacazio N, Jacobs P M, Jadlovska S, Jadlovsky J, Jaelani S, Jahnke C, Jakubowska M J, Jalotra A, Janik M A, Janson T, Jercic M, Jevons O, Jimenez A A P, Jonas F, Jones P G, Jowett J M, Jung J, Jung M, Junique A, Jusko A, Kaewjai J, Kalinak P, Kalweit A, Kaplin V, Kar S, Karasu Uysal A, Karatovic D, Karavichev O, Karavicheva T, Karczmarczyk P, Karpechev E, Kazantsev A, Kebschull U, Keidel R, Keijdener D L D, Keil M, Ketzer B, Khabanova Z, 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 J, Kim M, Kim S, Kim T, 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, Köhler M K, Kollegger T, Kondratyev A, Kondratyeva N, Kondratyuk E, Konig J, Konigstorfer S A, Konopka P J, Kornakov G, Koryciak S D, Koska L, Kotliarov A, Kovalenko O, Kovalenko V, Kowalski M, Králik I, Kravčáková A, Kreis L, Krivda M, Krizek F, Krizkova Gajdosova K, Kroesen M, Krüger M, Kryshen E, Krzewicki M, Kučera V, Kuhn C, Kuijer P G, Kumaoka T, Kumar D, Kumar L, Kumar N, Kundu S, Kurashvili P, Kurepin A, Kurepin A B, Kuryakin A, Kushpil S, Kvapil J, Kweon M J, Kwon J Y, Kwon Y, La Pointe S L, La Rocca P, Lai Y S, Lakrathok A, Lamanna M, Langoy R, Lapidus K, Larionov P, Laudi E, Lautner L, Lavicka R, Lazareva T, Lea R, Lehrbach J, Lemmon R C, León Monzón I, Lesser E D, Lettrich M, Lévai P, Li X, Li X L, Lien J, Lietava R, Lim B, Lim S H, Lindenstruth V, Lindner A, Lippmann C, Liu A, Liu D H, Liu J, Lofnes I M, Loginov V, Loizides C, Loncar P, Lopez J A, Lopez X, López Torres E, Luhder J R, Lunardon M, Luparello G, Ma Y G, Maevskaya A, Mager M, Mahmoud T, Maire A, Malaev M, Malik N M, Malik Q W, Malinina L, Mal'Kevich D, Mallick N, Malzacher P, Mandaglio G, Manko V, Manso F, Manzari V, Mao Y, Mareš J, Margagliotti G V, Margotti A, Marín A, Markert C, Marquard M, Martin N A, Martinengo P, Martinez J L, Martínez M I, Martínez García G, Masciocchi S, Masera M, Masoni A, Massacrier L, Mastroserio A, Mathis A M, Matonoha O, Matuoka P F T, Matyja A, Mayer C, Mazuecos A L, Mazzaschi F, Mazzilli M, Mazzoni M A, Mdhluli J E, Mechler A F, Meddi F, Melikyan Y, Menchaca-Rocha A, Meninno E, Menon A S, Meres M, Mhlanga S, Miake Y, Micheletti L, Migliorin L C, Mihaylov D L, Mikhaylov K, Mishra A N, Miśkowiec D, Modak A, Mohanty A P, Mohanty B, Mohisin Khan M, Molander M A, Moravcova Z, Mordasini C, Moreira De Godoy D A, Moreno L A P, Morozov I, Morsch A, Mrnjavac T, Muccifora V, Mudnic E, Mühlheim D, 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, Nair R, Nandi B K, Nania R, Nappi E, Nassirpour A F, Nath A, Nattrass C, Neagu A, Nellen L, Nesbo S V, Neskovic G, Nesterov D, Nielsen B S, Nikolaev S, Nikulin S, Nikulin V, Noferini F, Noh S, Nomokonov P, Norman J, Novitzky N, Nowakowski P, Nyanin A, Nystrand J, Ogino M, Ohlson A, Okorokov V A, Oleniacz J, Oliveira Da Silva A C, Oliver M H, Onnerstad A, Oppedisano C, Ortiz Velasquez A, Osako T, Oskarsson A, Otwinowski J, Oya M, Oyama K, Pachmayer Y, Padhan S, Pagano D, Paić G, Palasciano A, Pan J, Panebianco S, Pareek P, Park J, Parkkila J E, Pathak S P, Patra R N, Paul B, Pei H, Peitzmann T, Peng X, Pereira L G, Pereira Da Costa H, Peresunko D, Perez G M, Perrin S, Pestov Y, Petráček 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, Porter J, Pozdniakov V, Prasad S K, Preghenella R, Prino F, Pruneau C A, Pshenichnov I, Puccio M, Qiu S, Quaglia L, Quishpe R E, Ragoni S, Rakotozafindrabe A, Ramello L, Rami F, Ramirez S A R, Ramos A G T, Rancien T A, Raniwala R, Raniwala S, Räsänen S S, Rath R, Ravasenga I, Read K F, Redelbach A R, Redlich K, Rehman A, Reichelt P, Reidt F, Reme-Ness H A, Renfordt R, Rescakova Z, Reygers K, Riabov A, Riabov V, Richert T, Richter M, Riegler W, Riggi F, Ristea C, Rodríguez Cahuantzi M, Røed K, Rogalev R, Rogochaya E, Rogoschinski T S, Rohr D, Röhrich D, Rojas P F, Rokita P S, Ronchetti F, Rosano A, Rosas E D, Rossi A, Rotondi A, Roy A, Roy P, Roy S, Rubini N, Rueda O V, Rui R, Rumyantsev B, Russek P G, Rustamov A, Ryabinkin E, Ryabov Y, Rybicki A, Rytkonen H, Rzesa W, Saarimaki O A M, Sadek R, Sadovsky S, Saetre J, Šafařík K, Saha S K, Saha S, Sahoo B, Sahoo P, Sahoo R, Sahoo S, Sahu D, Sahu P K, Saini J, Sakai S, Sambyal S, Samsonov V, Sarkar D, Sarkar N, Sarma P, Sarti V M, Sas M H P, Schambach J, Scheid H S, Schiaua C, Schicker R, Schmah A, Schmidt C, Schmidt H R, Schmidt M O, Schmidt M, Schmidt N V, Schmier A R, Schotter R, Schukraft J, Schutz Y, Schwarz K, Schweda K, Scioli G, Scomparin E, Seger J E, Sekiguchi Y, Sekihata D, Selyuzhenkov I, Senyukov S, Seo J J, Serebryakov D, Šerkšnytė L, Sevcenco A, Shaba T J, Shabanov A, Shabetai A, Shahoyan R, Shaikh W, Shangaraev A, Sharma A, Sharma H, Sharma M, Sharma N, Sharma S, Sharma U, Sheibani O, Shigaki K, Shimomura M, Shirinkin S, Shou Q, Sibiriak Y, Siddhanta S, Siemiarczuk T, Silva T F, Silvermyr D, Simonetti G, Singh B, Singh R, Singh R, Singh R, Singh V K, Singhal V, Sinha T, Sitar B, Sitta M, Skaali T B, Skorodumovs G, Slupecki M, Smirnov N, Snellings R J M, Soncco C, Song J, Songmoolnak A, Soramel F, Sorensen S, Sputowska I, Stachel J, Stan I, Steffanic P J, Stiefelmaier S F, Stocco D, Storehaug I, Storetvedt M M, Stylianidis C P, Suaide A A P, Sugitate T, Suire C, Sukhanov M, Suljic M, Sultanov R, Šumbera M, Sumberia V, Sumowidagdo S, Swain S, Szabo A, Szarka I, Tabassam U, Taghavi S F, Taillepied G, Takahashi J, Tambave G J, Tang S, Tang Z, Tapia Takaki J D, Tarhini M, Tarzila M G, Tauro A, Tejeda Muñoz G, Telesca A, Terlizzi L, Terrevoli C, Tersimonov G, Thakur S, Thomas D, Tieulent R, Tikhonov A, Timmins A R, Tkacik M, Toia A, Topilskaya N, Toppi M, Torales-Acosta F, Tork T, Torres S R, Trifiró A, Tripathy S, Tripathy T, Trogolo S, Trombetta G, Trubnikov V, Trzaska W H, Trzcinski T P, Trzeciak B A, Tumkin A, Turrisi R, Tveter T S, Ullaland K, Uras A, Urioni M, Usai G L, Vala M, Valle N, Vallero S, van der Kolk N, van Doremalen L V R, van Leeuwen M, Vande Vyvre P, Varga D, Varga Z, Varga-Kofarago M, Vargas A, Vasileiou M, Vasiliev A, Vázquez Doce O, Vechernin V, Vercellin E, Vergara Limón S, Vermunt L, Vértesi R, Verweij M, Vickovic L, Vilakazi Z, Villalobos Baillie O, Vino G, Vinogradov A, Virgili T, Vislavicius V, Vodopyanov A, Volkel B, Völkl M A, Voloshin K, Voloshin S A, Volpe G, von Haller B, Vorobyev I, Voscek D, Vozniuk N, Vrláková J, Wagner B, Wang C, Wang D, Weber M, Weelden R J G V, Wegrzynek A, Wenzel S C, Wessels J P, Wiechula J, Wikne J, Wilk G, Wilkinson J, Willems G A, Windelband B, Winn M, Witt W E, Wright J R, Wu W, Wu Y, Xu R, Yadav A K, Yalcin S, Yamaguchi Y, Yamakawa K, Yang S, Yano S, Yin Z, Yokoyama H, Yoo I-K, Yoon J H, Yuan S, Yuncu A, Zaccolo V, Zampolli C, Zanoli H J C, Zardoshti N, Zarochentsev A, Závada P, Zaviyalov N, Zhalov M, Zhang B, Zhang S, Zhang X, Zhang Y, Zherebchevskii V, Zhi Y, Zhigareva N, Zhou D, Zhou Y, Zhu J, Zhu Y, Zichichi A, Zinovjev G, Zurlo N
Variable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, India.
Nuclear Physics Institute of the Czech Academy of Sciences, Řež u Prahy, Czech Republic.
Phys Rev Lett. 2022 Mar 11;128(10):102001. doi: 10.1103/PhysRevLett.128.102001.
This article presents groomed jet substructure measurements in pp and Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV with the ALICE detector. The soft drop grooming algorithm provides access to the hard parton splittings inside a jet by removing soft wide-angle radiation. We report the groomed jet momentum splitting fraction, z_{g}, and the (scaled) groomed jet radius, θ_{g}. Charged-particle jets are reconstructed at midrapidity using the anti-k_{T} algorithm with resolution parameters R=0.2 and R=0.4. In heavy-ion collisions, the large underlying event poses a challenge for the reconstruction of groomed jet observables, since fluctuations in the background can cause groomed parton splittings to be misidentified. By using strong grooming conditions to reduce this background, we report these observables fully corrected for detector effects and background fluctuations for the first time. A narrowing of the θ_{g} distribution in Pb-Pb collisions compared to pp collisions is seen, which provides direct evidence of the modification of the angular structure of jets in the quark-gluon plasma. No significant modification of the z_{g} distribution in Pb-Pb collisions compared to pp collisions is observed. These results are compared with a variety of theoretical models of jet quenching, and provide constraints on jet energy-loss mechanisms and coherence effects in the quark-gluon plasma.
本文介绍了利用ALICE探测器在质心能量√[sNN]=5.02 TeV的质子-质子（pp）和铅-铅（Pb-Pb）碰撞中对修整喷注子结构的测量。软滴修整算法通过去除软的大角度辐射来获取喷注内部的硬部分子分裂。我们报告了修整喷注动量分裂分数zg和（标度后的）修整喷注半径θg。利用反kT算法在中快度区域重建带电粒子喷注，分辨率参数R = 0.2和R = 0.4。在重离子碰撞中，大量的本底事件对修整喷注可观测量的重建构成了挑战，因为本底中的涨落会导致修整的部分子分裂被误识别。通过使用强修整条件来减少这种本底，我们首次报告了对探测器效应和本底涨落进行了完全校正的这些可观测量。与pp碰撞相比，在Pb-Pb碰撞中观察到θg分布变窄，这为夸克-胶子等离子体中喷注角结构的改变提供了直接证据。与pp碰撞相比，在Pb-Pb碰撞中未观察到zg分布有显著改变。这些结果与各种喷注淬火理论模型进行了比较，并对夸克-胶子等离子体中的喷注能量损失机制和相干效应提供了约束。
