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Underlying Event measurements in pp collisions at root s=0.9 and 7 TeV with the ALICE experiment at the LHC

Title:	Underlying Event measurements in pp collisions at root s=0.9 and 7 TeV with the ALICE experiment at the LHC
Authors:	Abelev B; Quintana AA; Adamova D; Adare AM; Aggarwal M; Rinella GA; Agocs AG; Agostinelli A; Salazar SA; Ahammed Z; Ahmad N; Ahmad A; Ahn SU; Akindinov A; Aleksandrov D; Alessandro B; Molina JRA; Alici A; Alkin A; Avina EJA; Alt T; Altini V; Altinpinar S; Altsybeev I; Andrei C; Andronic A; Anguelov V; Anson CD; Anticic T; Antinori F; Antonioli P; Aphecetche LB; Appelshauser H; Arbor N; Arcelli S; Arend A; Armesto N; Arnaldi R; Aronsson TR; Arsene IC; Arslandok M; Asryan A; Augustinus A; Averbeck RP; Awes T; Aysto JH; Azmi MD; Bach MJ; Badala A; Baek YW; Bailhache RM; Bala R; Ferroli RB; Baldisseri A; Baldit A; Pedrosa FBD; Ban J; Baral RC; Barbera R; Barile F; Barnafoldi GG; Barnby LS; Barret V; Bartke JG; Basile M; Bastid N; Bathen B; Batigne G; Batyunya B; Baumann CH; Bearden IG; Beck H; Belikov I; Bellini F; Bellwied R; Belmont Moreno E; Beole S; Berceanu I; Bercuci A; Berdnikov Y; Berenyi D; Bergmann C; Berzano D; Betev L; Bhasin A; Bhati AK; Bianchi N; Bianchi L; Bianchin C; Bielcik J; Bielcikova J; Bilandzic A; Blanco F; Blau D; Blume C; Boccioli M; Bock N; Bogdanov A; Boggild H; Bogolyubsky M; Boldizsar L; Bombara M; Book J; Borel H; Borissov A; Bortolin C; Bose SN; Bossu F; Botje M; Bottger S; Boyer BA; Braun Munzinger P; Bregant M; Breitner TG; Broz M; Brun R; Bruna E; Bruno GE; Budnikov D; Buesching H; Bufalino S; Bugaiev K; Busch O; Buthelezi EZ; Caffarri D; Cai X; Caines HL; Villar EC; Camerini P; Roman VC; Romeo GC; Carena F; Carena W; Carlin NC; Carminati F; Montoya CAC; Diaz AOC; Caselle M; Castellanos JEC; Hernandez JFC; Casula EAR; Catanescu V; Cavicchioli C; Cepila J; Cerello P; Chang B; Chapeland S; Charvet JLF; Chattopadhyay S; Cherney MG; Cheshkov C; Cheynis B; Chiavassa E; Barroso VMC; Chinellato D; Chochula P; Chojnacki M; Christakoglou P; Christensen CH; Christiansen P; Chujo T; Chung SU; Cicalo C; Cifarelli L; Cindolo F; Cleymans JWA; Coccetti F; Coffin JPM; Colamaria F; Colella D; Balbastre GC; del Valle ZC; Constantin P; Contin G; Contreras JG; 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Fiore EM; Floris M; Foertsch SV; Foka P; Fokin S; Fragiacomo E; Fragkiadakis M; Frankenfeld UM; Fuchs U; Furget C; Girard MF; Gaardhoje JJ; Gagliardi M; Gago A; Gallio M; Gangadharan DR; Ganoti P; Garabatos J; Garcia Solis E; Garishvili I; Gerhard J; Germain M; Geuna C; Gheata AG; Gheata M; Ghidini B; Ghosh P; Gianotti P; Girard MR; Giubellino P; Gladysz Dziadus E; Glassel P; Gomez R; Ferreiro EG; Gonzalez Trueba LH; Gonzalez Zamora P; Gorbunov S; Goswami A; Gotovac S; Grabski V; Graczykowski LK; Grajcarek R; Grelli A; Grigoras C; Grigoras AG; Grigoriev V; Grigoryan A; Grigoryan S; Grinyov B; Grion N; Gros P; Grosse Oetringhaus JF; Grossiord JY; Grosso R; Guber F; Guernane R; Gutierrez CG; Guerzoni B; Guilbaud MRJ; Gulbrandsen KH; Gunji T; Gupta A; Gupta R; Gutbrod H; Haaland OS; Hadjidakis CM; Haiduc M; Hamagaki H; Hamar G; Han B; Hanratty LD; Hansen A; Harmanova Z; Harris JW; Hartig M; Hasegan D; Hatzifotiadou D; Hayrapetyan A; Heckel ST; Heide MA; Helstrup H; Herghelegiu AI; Corral GAH; Herrmann N; Hetland KF; Hicks B; Hille PT; Hippolyte B; Horaguchi T; Hori Y; Hristov PZ; Hrivnacova I; Huang M; Huber SB; Humanic T; Hwang DS; Ichou R; Ilkaev R; Ilkiv I; Inaba M; INCANI, ELISA; Innocenti PG; Innocenti GM; Ippolitov M; Irfan M; Ivan CG; Ivanov M; Ivanov V; Ivanov A; Ivanytskyi O; Jacholkowski AW; Jacobs P; Jancurova L; Jang HJ; Jangal SG; Janik R; Janik MA; Jayarathna S; Jena S; Bustamante RTJ; Jirden L; Jones PG; Jung WW; Jung HT; Jusko A; Kaidalov A; Kakoyan V; Kalcher S; Kalinak P; Kalisky M; Kalliokoski TEA; Kalweit AP; Kanaki K; Kang JH; Kaplin V; Uysal AK; Karavichev O; Karavicheva T; Karpechev E; Kazantsev A; Kebschull UW; Keidel R; Khan P; Khan MM; Khan SA; Khanzadeev A; Kharlov Y; Kileng B; Kim J; Kim DJ; Kim DW; Kim JS; Kim M; Kim SH; Kim SY; Kim B; Kim T; Kirsch S; Kisel I; Kiselev S; Kisiel AR; Klay JL; Klein J; Klein Bosing C; Kliemant M; Kluge A; Knichel ML; Koch K; Kohler M; Kolojvari A; Kondratiev V; Kondratyeva N; Konevskih A; Korneev A; Don CKK; Kour R; Kowalski M; Kox S; Meethaleveedu GK; Kral J; Kralik I; Kramer F; Kraus IC; Krawutschke T; Kretz M; Krivda M; Krizek F; Krus M; Kryshen E; Krzewicki M; Kucheriaev Y; Kuhn CC; Kuijer P; Kurashvili P; Kurepin AB; Kurepin A; Kuryakin A; Kushpil S; Kushpil V; Kvaerno H; Kweon MJ; Kwon Y; de Guevara PL; Lakomov I; Langoy R; Lara CE; Lardeux AX; La Rocca P; Lazzeroni C; Lea R; Le Bornec Y; Lee SC; Lee KS; Lefevre F; Lehnert JW; Leistam L; Lenhardt ML; Lenti V; Leon H; Monzon IL; Vargas HL; Levai P; Li XM; Lien J; Lietava R; Lindal S; Lindenstruth V; Lippmann C; Lisa MA; Liu LJ; Loenne PI; Loggins V; Loginov V; Lohn SB; Lohner D; Loizides C; Loo KK; Lopez XB; Torres EL; Lovhoiden G; Lu XG; Luettig P; Lunardon M; Luo JB; Luparello G; Luquin L; Luzzi C; Ma RR; Ma K; Madagodahettige Don DM; Maevskaya A; Mager M; Mahapatra DP; Maire A; Malaev M; Cervantes IAM; Malinina L; Mal'Kevich D; Malzacher P; Mamonov A; Manceau LHA; Mangotra LK; Manko V; Manso F; Manzari V; Mao YX; Marchisone M; Mares J; Margagliotti GV; Margotti A; Marin AM; Markert C; Martashvili I; Martinengo P; Martinez MI; Davalos AM; Garcia GM; Martynov Y; Mas AJM; Masciocchi S; Masera M; Masoni A; Massacrier LM; Mastromarco M; Mastroserio A; Matthews ZL; Matyja AT; Mayani D; Mayer C; Mazer J; Mazzoni AM; Meddi F; Menchaca Rocha AA; Perez JM; Meres M; Miake Y; Michalon A; Midori J; Milano L; Milosevic J; Mischke A; Mishra AN; Miskowiec D; Mitu CM; Mlynarz J; Mohanty AK; Mohanty B; Molnar L; Zetina LMM; Monteno M; Montes E; Moon T; Morando M; De Godoy DAM; Moretto S; Morsch A; Muccifora V; Mudnic E; Muhuri S; Muller H; Munhoz M; Musa L; Musso A; Nandi BK; Nania R; Nappi E; Nattrass C; Naumov N; Navin S; Nayak TK; Nazarenko S; Nazarov G; Nedosekin A; Nicassio M; Nielsen BS; Niida T; Nikolaev S; Nikolic V; Nikulin V; Nikulin S; Nilsen BS; Nilsson MS; Noferini F; Nomokonov P; Nooren G; Novitzky N; Nyanin A; Nyatha A; Nygaard C; Nystrand JI; Obayashi H; Ochirov A; Oeschler HO; Oh SK; Oh S; Oleniacz J; Oppedisano C; Velasquez AO; Ortona G; Oskarsson ANE; Ostrowski PK; Otterlund I; Otwinowski JT; Oyama K; Ozawa K; Pachmayer YC; Pachr M; Padilla F; Pagano P; Paic G; Painke F; Pajares C; Pal S; Pal SK; Palaha AS; Palmeri A; Papikyan V; Pappalardo G; Park WJ; Passfeld A; Pastircak B; Patalakha DI; Paticchio V; Pavlinov A; Pawlak TJ; Peitzmann T; Perales M; De Oliveira EP; Peresunko D; Lara CEP; Lezama EP; Perini D; Perrino D; Peryt WS; Pesci A; Peskov V; Pestov Y; Petracek V; Petran M; Petris M; Petrov PR; Petrovici M; Petta C; Piano S; Piccotti A; Pikna M; Pillot P; Pinazza O; Pinsky L; Pitz N; Piuz F; Piyarathna D; Ploskon MA; Pluta JM; Pocheptsov T; Pochybova S; Lerma PLMP; Poghosyan M; Polak K; Polichtchouk B; Pop A; Porteboeuf Houssais S; Pospisil V; Potukuchi B; Prasad SK; Preghenella R; Prino F; Pruneau CA; Pshenichnov I; Puchagin S; PUDDU, GIOVANNA; Pulvirenti A; Punin V; Putis M; Putschke JH; Quercigh E; Qvigstad H; Rachevski A; Rademakers A; Radomski S; Raiha TS; Rak J; Rakotozafindrabe AM; Ramello L; Reyes AR; Raniwala S; 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Sicking E; SIDDHANTA, SABYASACHI; Siemiarczuk T; Silvermyr DOR; Simonetti G; Singaraju RN; Singh R; Singha S; Sinha B; Sinha T; Sitar B; Sitta M; Skaali B; Skjerdal K; Smakal R; Smirnov N; Snellings R; Sogaard C; Soltz RA; Son H; Song J; Song M; Soos C; Soramel F; Sputowska I; Spyropoulou Stassinaki M; Srivastava BK; Stachel J; Stan I; Stefanek G; Stefanini G; Steinbeck TM; Steinpreis M; Stenlund EA; Steyn GF; Stocco D; Stolpovskiy M; Strabykin K; Strmen P; Suaide AAD; Vasquez MAS; Sugitate T; Suire CP; Sukhorukov M; Sultanov R; Sumbera M; Susa T; de Toledo AS; Szarka I; Szostak AK; Tagridis C; Takahashi J; Takaki DJT; Tauro A; Munoz GT; Telesca A; TERREVOLI, CRISTINA; Thader JM; Thomas J; Thomas D; Tieulent RN; Timmins A; Tlusty D; Toia A; Torii H; Toscano L; Tosello F; Traczyk T; Truesdale DC; Trzaska WH; Tsuji T; Tumkin A; Turrisi R; Tveter TS; Ulery JG; Ullaland K; Ulrich J; Uras A; Urban J; Urciuoli GM; USAI, GIANLUCA; Vajzer M; Vala M; Palomo LV; Vallero S; van der Kolk N; Vyvre PV; 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Contributors:	Abelev, B; Quintana, Aa; Adamova, D; Adare, Am; Aggarwal, M; Rinella, Ga; Agocs, Ag; Agostinelli, A; Salazar, Sa; Ahammed, Z; Ahmad, N; Ahmad, A; Ahn, Su; Akindinov, A; Aleksandrov, D; Alessandro, B; Molina, Jra; Alici, A; Alkin, A; Avina, Eja; Alt, T; Altini, V; Altinpinar, S; Altsybeev, I; Andrei, C; Andronic, A; Anguelov, V; Anson, Cd; Anticic, T; Antinori, F; Antonioli, P; Aphecetche, Lb; Appelshauser, H; Arbor, N; Arcelli, S; Arend, A; Armesto, N; Arnaldi, R; Aronsson, Tr; Arsene, Ic; Arslandok, M; Asryan, A; Augustinus, A; Averbeck, Rp; Awes, T; Aysto, Jh; Azmi, Md; Bach, Mj; Badala, A; Baek, Yw; Bailhache, Rm; Bala, R; Ferroli, Rb; Baldisseri, A; Baldit, A; Pedrosa, Fbd; Ban, J; Baral, Rc; Barbera, R; Barile, F; Barnafoldi, Gg; Barnby, L; Barret, V; Bartke, Jg; Basile, M; Bastid, N; Bathen, B; Batigne, G; Batyunya, B; Baumann, Ch; Bearden, Ig; Beck, H; Belikov, I; Bellini, F; Bellwied, R; Belmont Moreno, E; Beole, S; Berceanu, I; Bercuci, A; Berdnikov, Y; Berenyi, D; Bergmann, C; Berzano, D; Betev, L; Bhasin, A; Bhati, Ak; Bianchi, N; Bianchi, L; Bianchin, C; Bielcik, J; Bielcikova, J; Bilandzic, A; Blanco, F; Blau, D; Blume, C; Boccioli, M; Bock, N; Bogdanov, A; Boggild, H
Publication Year:	2012
Collection:	Università degli Studi di Cagliari: UNICA IRIS
Description:	We present measurements of Underlying Event observables in pp collisions at root s = 0 : 9 and 7 TeV. The analysis is performed as a function of the highest charged-particle transverse momentum p(T),L-T in the event. Different regions are defined with respect to the azimuthal direction of the leading (highest transverse momentum) track: Toward, Transverse and Away. The Toward and Away regions collect the fragmentation products of the hardest partonic interaction. The Transverse region is expected to be most sensitive to the Underlying Event activity. The study is performed with charged particles above three different p(T) thresholds: 0.15, 0.5 and 1.0 GeV/c. In the Transverse region we observe an increase in the multiplicity of a factor 2-3 between the lower and higher collision energies, depending on the track p(T) threshold considered. Data are compared to PYTHIA 6.4, PYTHIA 8.1 and PHOJET. On average, all models considered underestimate the multiplicity and summed p(T) in the Transverse region by about 10-30%.
Document Type:	article in journal/newspaper
Language:	English
Relation:	info:eu-repo/semantics/altIdentifier/wos/WOS:000307298400113; issue:7; firstpage:116; numberofpages:43; journal:JOURNAL OF HIGH ENERGY PHYSICS; https://hdl.handle.net/11584/78979; http://link.springer.com/article/10.1007%2FJHEP07%282012%29116
DOI:	10.1007/JHEP07(2012)116
Availability:	https://hdl.handle.net/11584/78979; https://doi.org/10.1007/JHEP07(2012)116; http://link.springer.com/article/10.1007%2FJHEP07%282012%29116
Accession Number:	edsbas.863AA2B1
Database:	BASE