喷流中增强的氘核聚结概率
Enhanced Deuteron Coalescence Probability in Jets.
作者信息
Acharya S, Adamová D, Adler A, 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, Altsybeev I, Anaam M N, Andrei C, 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, 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, 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, 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 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, Bolozdynya A, 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, Bugnon O, Buhler P, Buthelezi Z, Bysiak S A, Cai M, Caines H, Caliva A, Calvo Villar E, Camacho J M M, Camerini P, Canedo F D M, 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, Chavez T G, Cheng T, Cheshkov C, Cheynis B, Chibante Barroso V, Chinellato D D, Chizzali E S, Cho J, Cho S, Chochula P, 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, Cormier T M, Cortese P, Cosentino M R, Costa F, Costanza S, Cot C, Crkovská J, Crochet P, Cruz-Torres R, Cuautle E, Cui P, Dainese A, Danisch M C, Danu A, Das P, Das P, Das S, Dash A R, Dash S, David R M H, 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 S, Debski R J, Deja K R, Del Grande R, Dello Stritto L, 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, Dobrin A, Dönigus B, Dubinski J M, Dubla A, Dudi S, Dupieux P, Durkac M, Dzalaiova N, Eder T M, Ehlers R J, Eikeland V N, Eisenhut F, Elia D, Erazmus B, Ercolessi F, Erhardt F, Ersdal M R, Espagnon B, Eulisse G, Evans D, Evdokimov S, 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R, Keijdener D L D, Keil M, Ketzer B, Khan A M, Khan S, Khanzadeev A, Kharlov Y, Khatun A, Khuntia A, Kidson M B, Kileng B, Kim B, Kim C, Kim D J, Kim E J, Kim J, Kim J S, 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, Koryciak S D, Kotliarov A, Kovalenko V, Kowalski M, Kozhuharov V, Králik I, Kravčáková A, Kreis 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, 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, Larionov P, Laudi E, Lautner L, Lavicka R, Lazareva T, Lea R, Lee H, Legras G, Lehrbach J, Lemmon R C, León Monzón I, Lesch M M, Lesser E D, Lettrich M, Lévai P, Li X, Li X L, Lien J, Lietava R, Likmeta I, Lim B, Lim S H, Lindenstruth V, Lindner A, Lippmann C, Liu A, Liu D H, Liu J, Lofnes I M, Loizides C, Lokos S, Lomker J, Loncar P, Lopez J A, Lopez X, López Torres E, Lu P, Luhder J R, Lunardon M, Luparello G, Ma Y G, Maevskaya A, Mager M, Mahmoud T, Maire A, Makariev M V, Malaev M, Malfattore G, Malik N M, Malik Q W, Malik S K, Malinina L, Mal'Kevich D, Mallick D, Mallick N, Mandaglio G, Manko V, Manso F, Manzari V, Mao Y, Margagliotti G V, Margotti A, Marín A, Markert C, Martinengo P, Martinez J L, Martínez M I, Martínez García G, Masciocchi S, Masera M, Masoni A, Massacrier L, Mastroserio A, Matonoha O, Matuoka P F T, Matyja A, Mayer C, Mazuecos A L, Mazzaschi F, Mazzilli M, Mdhluli J E, Mechler A 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, 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, Nellen L, Nesbo S V, Neskovic G, Nesterov D, 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, Ohlson A, Okorokov V A, Oleniacz J, Oliveira Da Silva A C, Oliver M H, Onnerstad A, Oppedisano C, Ortiz Velasquez A, Otwinowski J, Oya M, Oyama K, Pachmayer Y, Padhan S, Pagano D, Paić G, Palasciano A, Panebianco S, Park H, Park H, Park J, Parkkila J E, Patra R N, Paul B, Pei H, Peitzmann T, Peng X, Pennisi M, Pereira L G, Peresunko D, Perez G M, Perrin S, Pestov Y, Petráček V, 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, 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, Quishpe R E, Ragoni S, Rakotozafindrabe A, Ramello L, Rami F, Ramirez S A R, 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, 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, Ristea C, Rodríguez Cahuantzi M, 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, Rueda O V, Ruggiano D, Rui R, Rumyantsev B, Russek P G, Russo R, Rustamov A, Ryabinkin E, Ryabov Y, 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机构信息
Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
Nuclear Physics Institute of the Czech Academy of Sciences, Husinec-Řež, Czech Republic.
出版信息
Phys Rev Lett. 2023 Jul 28;131(4):042301. doi: 10.1103/PhysRevLett.131.042301.
The transverse-momentum (p_{T}) spectra and coalescence parameters B_{2} of (anti)deuterons are measured in p-p collisions at sqrt[s]=13 TeV for the first time in and out of jets. In this measurement, the direction of the leading particle with the highest p_{T} in the event (p_{T}^{lead}>5 GeV/c) is used as an approximation for the jet axis. The event is consequently divided into three azimuthal regions, and the jet signal is obtained as the difference between the toward region, that contains jet fragmentation products in addition to the underlying event (UE), and the transverse region, which is dominated by the UE. The coalescence parameter in the jet is found to be approximately a factor of 10 larger than that in the underlying event. This experimental observation is consistent with the coalescence picture and can be attributed to the smaller average phase-space distance between nucleons in the jet cone as compared with the underlying event. The results presented in this Letter are compared to predictions from a simple nucleon coalescence model, where the phase-space distributions of nucleons are generated using pythia8 with the Monash 2013 tuning, and to predictions from a deuteron production model based on ordinary nuclear reactions with parametrized energy-dependent cross sections tuned on data. The latter model is implemented in pythia8.3. Both models reproduce the observed large difference between in-jet and out-of-jet coalescence parameters, although the almost flat trend of the B_{2}^{Jet} is not reproduced by the models, which instead give a decreasing trend.
首次在(\sqrt{s}=13) TeV的质子-质子碰撞中，测量了喷注内外的（反）氘核的横向动量（(p_T)）谱和聚结参数(B_2)。在该测量中，将事件中具有最高(p_T)的领头粒子方向（(p_T^{lead}>5) GeV/c）用作喷注轴的近似方向。因此，事件被划分为三个方位角区域，通过包含喷注碎裂产物以及本底事件（UE）的朝向区域与以本底事件为主的横向区域之间的差值得到喷注信号。发现喷注中的聚结参数比本底事件中的大约大10倍。这一实验观测结果与聚结图像一致，并且可归因于与本底事件相比，喷注锥内核子之间较小的平均相空间距离。将本 Letter 中给出的结果与来自一个简单核子聚结模型的预测进行比较，该模型中核子的相空间分布使用经过莫纳什2013调谐的pythia8生成，还与来自一个基于普通核反应且具有根据数据调谐的参数化能量依赖截面的氘核产生模型的预测进行比较。后一个模型在pythia8.3中实现。两个模型都再现了观测到的喷注内和喷注外聚结参数之间的巨大差异，尽管模型没有再现(B_2^{Jet})几乎平坦的趋势，而是给出了下降趋势。
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