Measurement of isolated prompt photon production in pp and p-Pb collisions at the LHC

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This paper presents the measurement of the isolated prompt photon inclusive production cross section in pp and p-Pb collisions by the ALICE Collaboration at the LHC. The measurement is performed in p-Pb collisions at centre-of-mass energies per nucleon pair of root s(NN) = 5.02 TeV and 8.16 TeV, as well as in pp collisions at root s = 5.02 TeV and 8 TeV. The cross section is obtained at midrapidity (|y| < 0.7) using a charged-track based isolation momentum p(T)(iso, ch) T < 1.5GeV/c in a cone with radius R = 0.4. The data for both collision systems are well reproduced by perturbative QCD (pQCD) calculations at next-to-leading order (NLO) using recent parton distribution functions for free (PDF) and bound (nPDF) nucleons. Furthermore, the nuclear modification factor RpA for both collision energies is consistent with unity for p(T) > 20 GeV/c. However, deviations from unity (R-pA < 1) of up to 20% are observed for p(T) < 20 GeV/c with limited significance, indicating the possible presence of nuclear effects in the initial state of the collision. The suppression increases with decreasing p(T) with a significance of 2.3 sigma for a non-zero slope and yields R-pA < 1 with a significance of 1.8s at root s(NN) = 8.16 TeV for pT < 20 GeV/c. In addition, a significance of 1.1 sigma is observed for R-pA < 1 at the lower collision energy root s(N)N = 5.02 TeV for p(T) < 14 GeV/c. The magnitude and shape of the suppression are consistent with pQCD predictions at NLO using nPDFs that incorporate nuclear shadowing effects in the Pb nucleus.

키워드

PRODUCTION CROSS-SECTIONSCATTERINGQUARK
제목
Measurement of isolated prompt photon production in pp and p-Pb collisions at the LHC
저자
Acharya, S.Agarwal, A.Rinella, G. AglieriAglietta, L.Agnello, M.Agrawal, N.Ahammed, Z.Ahmad, S.Ahn, S. U.Ahuja, I.Akindinov, A.Akishina, V.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.Andronov, E.Anguelov, V.Antinori, F.Antonioli, P.Apadula, N.Appelshaeuser, H.Arata, C.Arcelli, S.Arnaldi, R.Arneiro, J. G. M. C. A.Arsene, I. C.Arslandok, M.Augustinus, A.Averbeck, R.Averyanov, D.Azmi, M. D.Baba, H.Badala, A.Bae, J.Bae, Y.Baek, Y. W.Bai, X.Bailhache, R.Bailung, Y.Bala, R.Baldisseri, A.Balis, B.Bangalia, S.Banoo, Z.Barbasova, V.Barile, F.Barioglio, L.Barlou, M.Barman, B.Barnafoldi, G. G.Barnby, L. S.Barreau, E.Barret, V.Barreto, L.Barth, K.Bartsch, E.Bastid, N.Basu, S.Batigne, G.Battistini, D.Batyunya, B.Bauri, D.Bazo Alba, J. L.Bearden, I. G.Becht, P.Behera, D.Belikov, I.Hechavarria, A. D. C. BellBellini, F.Bellwied, R.Belokurova, S.Beltran, L. G. E.Beltran, Y. A. V.Bencedi, G.Bensaoula, A.Beole, S.Berdnikov, Y.Berdnikova, A.Bergmann, L.Bernardinis, L.Betev, L.Bhaduri, P. P.Bhasin, A.Bhattacharjee, B.Bhattarai, S.Bianchi, L.Bielcik, J.Bielcikova, J.Bigot, A. P.Bilandzic, A.Binoy, A.Biro, G.Biswas, S.Bize, N.Blair, J. T.Blau, D.Blidaru, M. B.Bluhme, N.Blume, C.Bock, F.Bodova, T.Bok, J.Boldizsar, L.Bombara, M.Bond, P. M.Bonomi, G.Borel, H.Borissov, A.Carcamo, A. G. BorquezBotta, E.Bouziani, Y. E. M.Brandibur, D. C.Bratrud, L.Braun-Munzinger, P.Bregant, M.Broz, M.Bruno, G. E.Buchakchiev, V. D.Buckland, M. D.Budnikov, D.Buesching, H.Bufalino, S.Buhler, P.Burmasov, N.Buthelezi, Z.Bylinkin, A.Bysiak, S. A.Cabanillas Noris, J. C.Cabrera, M. F. T.Caines, H.Caliva, A.Calvo Villar, E.Camacho, J. M. M.Camerini, P.Camerlingo, M. T.Canedo, F. D. M.Cannito, S.Cantway, S. L.Carabas, M.Carnesecchi, F.Carvalho, L. A. D.Castellanos, J. CastilloCastoldi, M.Catalano, F.Cattaruzzi, S.Cerri, R.Chakaberia, I.Chakraborty, P.Chandra, S.Chapeland, S.Chartier, M.Chattopadhay, S.Chen, M.Cheng, T.Cheshkov, C.Chiappara, D.Barroso, V. ChibanteChinellato, D. D.Chinu, F.Chizzali, E. S.Cho, J.Cho, S.Chochula, P.Chochulska, Z. A.Choudhury, D.Choudhury, S.Christakoglou, P.Christensen, C. H.Christiansen, P.Chujo, T.Ciacco, M.Cicalo, C.Cimador, G.Cindolo, F.Ciupek, M. R.Clai, G.Colamaria, F.Colburn, J. S.Colella, D.Colelli, A.Colocci, M.Concas, M.Balbastre, G. Conesadel Valle, Z. ConesaContin, G.Contreras, J. G.Coquet, M. L.Cortese, P.Cosentino, M. R.Costa, F.Costanza, S.Crochet, P.Czarnynoga, M. M.Dainese, A.Dange, G.Danisch, M. C.Danu, A.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.Devereaux, K. C.de Souza, G. G. A.Dhankher, P.Di Bari, D.Di Costanzo, M.Di Mauro, A.Di Ruzza, B.Diab, B.Diaz, R. A.Ding, Y.Ditzel, J.Divia, R.Djuvsland, O.Dmitrieva, U.Dobrin, A.Doenigus, B.Dubinski, J. M.Dubla, A.Dupieux, P.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.Feofilov, G.Fernandez Tellez, A.Ferrandi, L.Ferrer, M. B.Ferrero, A.Ferrero, C.Ferretti, A.Feuillard, V. J. G.Filova, V.Finogeev, D.Fionda, F. M.Flor, F.Flores, A. N.Foertsch, S.Fokin, I.Fokin, S.Follo, U.Fragiacomo, E.Frajna, E.Fribert, H.Fuchs, U.Funicello, N.Furget, C.Furs, A.Fusayasu, T.Gaardhoje, J. J.Gagliardi, M.Gago, A. M.Gahlaut, T.Galvan, C. D.Gami, S.Gangadharan, D. R.Ganoti, P.Garabatos, C.Garcia, J. M.Chavez, T. GarciaGarcia-Solis, E.Garetti, S.Gargiulo, C.Gasik, P.Gaur, H. M.Gautam, A.Ducati, M. B. GayGermain, M.Gernhaeuser, R. A.Ghosh, C.Giacalone, M.Gioachin, G.Giri, S. K.Giubellino, P.Giubilato, P.Glaenzer, A. M. C.Glassel, 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.Groettvik, O. S.Grosa, F.Grosse-Oetringhaus, J. F.Grosso, R.Grund, D.Grunwald, N. A.Guernane, R.Guilbaud, M.Gulbrandsen, K.Gumprecht, J. K.Guendem, T.Gunji, T.Guo, J.Guo, W.Gupta, A.Gupta, R.Gwizdziel, K.Gyulai, L.Hadjidakis, C.Haider, F. U.Haidlova, S.Haldar, M.Hamagaki, H.Han, Y.Hanley, B. G.Hannigan, R.Hansen, J.Harris, J. W.Harton, A.Hartung, M. V.Hassan, H.Hatzifotiadou, D.Hauer, P.Havener, L. B.Hellbar, E.Helstrup, H.Hemmer, M.Herman, T.Hernandez, S. G.Herrera Corral, G.Herrmann, S.Hetland, K. F.Heybeck, B.Hillemanns, H.Hippolyte, B.Hobus, I. P. M.Hoffmann, F. W.Hofman, B.Horst, M.Horzyk, A.Hou, Y.Hristov, P.Huhn, P.Huhta, L. M.Humanic, T. J.Hutson, A.Hutter, D.Hwang, M. C.Ilkaev, R.Inaba, M.Ippolitov, M.Isakov, A.Isidori, T.Islam, M. S.Iurchenko, 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.Ji, S.Jia, S.Jiang, T.Jimenez, A. A. P.Jonas, F.Jones, D. M.Jowett, J. M.Jung, J.Jung, M.Junique, A.Jusko, A.Kaewjai, J.Kalinak, P.Kalweit, A.Uysal, A. KarasuKaratovic, D.Karatzenis, N.Karavichev, O.Karavicheva, T.Karpechev, E.Karwowska, M. J.Kebschull, U.Keil, M.Ketzer, B.Keul, J.Khade, S. S.Khan, A. M.Khan, S.Khanzadeev, A.Kharlov, Y.Khatun, A.Khuntia, A.Khuranova, Z.Kileng, B.Kim, B.Kim, C.Kim, D. J.Kim, D.Kim, E. J.Kim, J.Kim, M.Kim, S.Kim, T.Kimura, K.Kirsch, S.Kisel, I.Kiselev, S.Kisiel, A.Klay, J. L.Klein, J.Klein, S.Klein-Boesing, C.Kleiner, M.Klemenz, T.Kluge, A.Kobdaj, C.Kohara, R.Kollegger, T.Kondratyev, A.Kondratyeva, N.Konig, J.Konigstorfer, S. A.Konopka, P. J.Kornakov, G.Korwieser, M.Koryciak, S. D.Koster, C.Kotliarov, A.Kovacic, N.Kovalenko, V.Kowalski, M.Kozhuharov, V.Kozlov, G.Kralik, I.Kravcakova, A.Krcal, L.Krivda, M.Krizek, F.Gajdosova, K. KrizkovaKrug, C.Krueger, M.Krupova, D. M.Kryshen, E.Kucera, V.Kuhn, C.Kuijer, P. G.Kumaoka, T.Kumar, D.Kumar, L.Kumar, N.Kumar, S.Kundu, S.Kuo, M.Kurashvili, P.Kurepin, A. B.Kuryakin, A.Kushpil, S.Kuskov, V.Kutyla, M.Kuznetsov, A.Kweon, M. J.Kwon, Y.La Pointe, S. L.La Rocca, P.Lakrathok, A.Lamanna, M.Lambert, S.Landou, A. R.Langoy, R.Larionov, P.Laudi, E.Lautner, L.Laveaga, R. A. N.Lavicka, R.Lea, R.Lee, H.Legrand, I.Legras, G.Lejeune, A. M.Lelek, T. M.Lemmon, R. C.Leon Monzon, I.Lesch, M. M.Levai, P.Li, M.Li, P.Li, X.Liang-gilman, B. E.Lien, J.Lietava, R.Likmeta, I.Lim, B.Lim, H.Lim, S. H.Lin, S.Lindenstruth, V.Lippmann, C.Liskova, D.Liu, D. H.Liu, J.Liveraro, G. S. S.Lofnes, I. M.Loizides, C.Lokos, S.Lomker, J.Lopez, X.Torres, E. LopezLotteau, C.Lu, P.Lu, W.Lu, Z.Lugo, F. V.Luo, J.Luparello, G.Ma, Y. G.Mager, M.Maire, A.Majerz, E. M.Makariev, M. V.Malaev, M.Malfattore, G.Malik, N. M.Malik, N.Malik, S. K.Mallick, D.Mallick, N.Mandaglio, G.Mandal, S. K.Manea, A.Manko, V.Manna, A. K.Manso, F.Mantzaridis, G.Manzari, V.Mao, Y.Marcjan, R. W.Margagliotti, G. V.Margotti, A.Marin, A.Markert, C.Martinengo, P.Martinez, M. I.Garcia, G. MartinezMartins, M. P. P.Masciocchi, S.Masera, M.Masoni, A.Massacrier, L.Massen, O.Mastroserio, A.Mattei, L.Mattiazzo, S.Matyja, A.Mazzaschi, F.Mazzilli, M.Melikyan, Y.Melo, M.Menchaca-Rocha, A.Mendez, J. E. M.Meninno, E.Menon, A. S.Menzel, M. W.Meres, M.Micheletti, L.Mihai, D.Mihaylov, D. L.Mikalsen, A. U.Mikhaylov, K.Minafra, N.Miskowiec, D.Modak, A.Mohanty, B.Khan, M. MohisinMolander, M. A.Mondal, M. M.Monira, S.Mordasini, C.De Godoy, D. A. MoreiraMorozov, I.Morsch, A.Mrnjavac, T.Muccifora, V.Muhuri, S.Mulliri, A.Munhoz, M. G.Munzer, R. H.Murakami, H.Musa, L.Musinsky, J.Myrcha, J. W.Sundstrom, N. B.Naik, B.Nambrath, A. I.Nandi, B. K.Nania, R.Nappi, E.Nassirpour, A. F.Nastase, V.Nath, A.Nathanson, N. F.Nattrass, C.Naumov, K.Naydenov, M. N.Neagu, A.Nellen, L.Nepeivoda, R.Nese, S.Nicassio, N.Nielsen, B. S.Nielsen, E. G.Nikolaev, S.Nikulin, V.Noferini, F.Noh, S.Nomokonov, P.Norman, J.Novitzky, N.Nyanin, A.Nystrand, J.Ockleton, M. R.Ogino, M.Oh, S.Ohlson, A.Okorokov, V. A.Oleniacz, J.Onnerstad, A.Oppedisano, C.Ortiz Velasquez, A.Otwinowski, J.Oya, M.Oyama, K.Padhan, S.Pagano, D.Paic, G.Paisano-Guzman, S.Palasciano, A.Panasenko, I.Panebianco, S.Panigrahi, P.Pantouvakis, C.Park, H.Park, J.Park, S.Parkkila, J. E.Patley, Y.Patra, R. N.Paudel, P.Paul, B.Pei, H.Peitzmann, T.Peng, X.Pennisi, M.Perciballi, S.Peresunko, D.Perez, G. M.Pestov, Y.Petersen, M. T.Petrov, V.Petrovici, M.Piano, S.Pikna, M.Pillot, P.Pinazza, O.Pinsky, L.Pinto, C.Pisano, S.Ploskon, M.Planinic, M.Plociennik, D. K.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.Qiu, S.Quaglia, L.Radhakrishnan, A. M. K.Ragoni, S.Rai, A.Rakotozafindrabe, A.Ramasubramanian, N.Ramello, L.Ramirez-Alvarez, C. O.Rasa, M.Rasanen, 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.Reygers, K.Riabov, A.Riabov, V.Ricci, R.Richter, M.Riedel, A. A.Riegler, W.Riffero, A. G.Rignanese, M.Ripoli, C.Ristea, C.Rodriguez, M. V.Cahuantzi, M. RodriguezRodriguez Ramirez, S. A.Roed, K.Rogalev, R.Rogochaya, E.Rogoschinski, T. S.Rohr, D.Rohrich, D.Torres, S. RojasRokita, P. S.Romanenko, G.Ronchetti, F.Rosales Herrera, D.Rosas, E. D.Roslon, K.Rossi, A.Roy, A.Roy, S.Rubini, N.Rudolph, J. A.Ruggiano, D.Rui, R.Russek, P. G.Russo, R.Rustamov, A.Ryabinkin, E.Ryabov, Y.Rybicki, A.Ryder, L. C. V.Ryu, J.Rzesa, W.Sabiu, B.Sadhu, S.Sadovsky, S.Saetre, J.Saha, S.Sahoo, B.Sahoo, R.Sahu, D.Sahu, P. K.Saini, J.Sajdakova, K.Sakai, S.Sambyal, S.Samitz, D.Sanna, I.Saramela, T. B.Sarkar, D.Sarma, P.Sarritzu, V.Sarti, V. M.Sas, M. H. P.Sawan, S.Scapparone, E.Schambach, J.Scheid, H. S.Schiaua, C.Schicker, R.Schlepper, F.Schmah, A.Schmidt, C.Schmidt, M. O.Schmidt, M.Schmidt, N. V.Schmier, A. R.Schoengarth, J.Schotter, R.Schroeter, 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.Serkin, L.Serksnyte, L.Sevcenco, A.Shaba, T. J.Shabetai, A.Shahoyan, R.Shangaraev, A.Sharma, B.Sharma, D.Sharma, H.Sharma, M.Sharma, S.Sharma, U.Shatat, A.Sheibani, O.Shigaki, K.Shimomura, M.Shirinkin, S.Shou, Q.Sibiriak, Y.Siddhanta, S.Siemiarczuk, T.Silva, T. F.Silvermyr, D.Simantathammakul, T.Simeonov, R.Singh, B.Singh, K.Singh, R.Singh, S.Singh, V. K.Singhal, V.Sinha, T.Sitar, B.Sitta, M.Skaali, T. B.Skorodumovs, G.Smirnov, N.Snellings, R. J. M.Solheim, E. H.Sonnabend, C.Sonneveld, J. M.Soramel, F.Soto-hernandez, A. B.Spijkers, R.Sputowska, I.Staa, J.Stachel, J.Stan, I.Steffanic, P. J.Stellhorn, T.Stiefelmaier, S. F.Stocco, D.Storehaug, I.Strangmann, N. J.Stratmann, P.Strazzi, S.Sturniolo, A.Stylianidis, C. P.Suaide, A. A. P.Suire, C.Suiu, A.Sukhanov, M.Suljic, M.Sultanov, R.Sumberia, V.Sumowidagdo, S.Tabares, L. H.Taghavi, S. F.Takahashi, J.Tambave, G. J.Tang, S.Tang, Z.Takaki, J. D. TapiaTapus, N.Tarasovicova, L. A.Tarzila, M. G.Tauro, A.Garcia, A. TaviraTejeda Munoz, G.Terlizzi, L.Terrevoli, C.Thakur, D.Thakur, S.Thogersen, M.Thomas, D.Tikhonov, A.Tiltmann, N.Timmins, A. R.Tkacik, M.Toia, A.Tokumoto, R.Tomassini, S.Tomohiro, K.Topilskaya, N.Toppi, M.Torres, V. V.Trifiro, A.Triloki, T.Triolo, A. S.Tripathy, S.Tripathy, T.Trogolo, S.Trubnikov, V.Trzaska, W. H.Trzcinski, T. P.Tsolanta, C.Tu, R.Tumkin, A.Turrisi, R.Tveter, T. S.Ullaland, K.Ulukutlu, B.Upadhyaya, S.Uras, A.Urioni, M.Usai, G. L.Vaid, M.Vala, M.Valle, N.van Doremalen, L. V. R.van Leeuwen, M.van Veen, C. A.van Weelden, R. J. G.Varga, D.Varga, Z.Vargas Torres, P.Vasileiou, M.Vasiliev, A.Doce, O. VazquezRueda, O. VazquezVechernin, V.Veen, P.Vercellin, E.Verma, R.Vertesi, R.Verweij, M.Vickovic, L.Vilakazi, Z.Baillie, O. VillalobosVillani, A.Vinogradov, A.Virgili, T.Virta, M. M. O.Vodopyanov, A.Volkel, B.Volkl, M. A.Voloshin, S. A.Volpe, G.von Haller, B.Vorobyev, I.Vozniuk, N.Vrlakova, J.Wan, J.Wang, C.Wang, D.Wang, Y.Wang, Z.Wegrzynek, A.Weiglhofer, F. T.Wenzel, S. C.Wessels, J. P.Wiacek, P. K.Wiechula, J.Wikne, J.Wilk, G.Wilkinson, J.Willems, G. A.Windelband, B.Winn, M.Wright, J. R.Wu, W.Wu, Y.Xiong, K.Xiong, Z.Xu, R.Yadav, A.Yadav, A. K.Yamaguchi, Y.Yang, S.Yano, S.Yeats, E. R.Yi, J.Yin, Z.Yoo, I-K.Yoon, J. H.Yu, H.Yuan, S.Yuncu, A.Zaccolo, V.Zampolli, C.Zanone, F.Zardoshti, N.Zarochentsev, A.Zavada, P.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, S.Zhu, Y.Zugravel, S. C.Zurlo, N.
DOI
10.1140/epjc/s10052-025-14802-w
발행일
2025-12-11
유형
Article
저널명
European Physical Journal C
85
12