Double parton interactions in gamma+3 jet and gamma plus b/c jet+2 jet events in p(p)over-bar collisions at root s=1.96 TeV V M Abazov , B Abbott , B S Acharya , M Adams , T Adams , J P Agnew , G D Alexeev , G Alkhazov , A Alton , A Askew , S Atkins , K Augsten , C Avila , F Badaud , L Bagby , B Baldin , D V Bandurin , Sudeshna Banerjee , E Barberis , P Baringer , J F Bartlett , U Bassler , V E Bazterra , A Bean , M Begalli , L Bellantoni , S B Beri , G Bernardi , R Bernhard , I Bertram , M Besancon , R Beuselinck , P C Bhat , Sangeeta N Bhatia , V Bhatnagar , G Blazey , S Blessing , K Bloom , A Boehnlein , D Boline , E E Boos , G Borissov , M Borysova , A Brandt , Oleg Brandt , R Brock , A Bross , D N Brown , X B Bu , M Buehler , V Buescher , V Bunichev , S Burdin , C P Buszello , E Camachoperez , B C K Casey , H Castillavaldez , S Caughron , S Chakrabarti , Kwok Ming Chan , A Chandra , E Chapon , G Chen , S W Cho , S Choi , B Choudhary , S Cihangir , D Claes , J Clutter , M Cooke , W E Cooper , M Corcoran , F Couderc , M C Cousinou , D Cutts , A Das , G Davies , S J De Jong , E De La Cruzburelo , F Deliot , R Demina , D Denisov , S P Denisov , S Desai , C Deterre , K Devaughan , H T Diehl , M Diesburg , P F Ding , A Dominguez , A K Dubey , L V Dudko , A Duperrin , S Dutt , M Eads , D Edmunds , J Ellison , V D Elvira , Y Enari , H Evans , V N Evdokimov , Lei Feng , T Ferbel , F Fiedler , F Filthaut , W Fisher , H E Fisk , M Fortner , H Fox , S Fuess , P H Garbincius , A Garciabellido , J A Garciagonzalez , V Gavrilov , W Geng , C E Gerber , Y Gershtein , G Ginther , G Golovanov , P D Grannis , S Greder , H Greenlee , G Grenier , Ph Gris , J F Grivaz , A Grohsjean , S Gruenendahl , M W Gruenewald , T Guillemin , G Gutierrez , Phillip Gutierrez , J Haley , L Han , K Harder , A Harel , J M Hauptman , J Hays , T Head , T Hebbeker , D Hedin , H Hegab , A P Heinson , U Heintz , C Hensel , I Herediade La Cruz , K Herner , G Hesketh , M D Hildreth , R Hirosky , T Hoang , J D Hobbs , B Hoeneisen , Julie Hogan , M Hohlfeld , J L Holzbauer , I Howley , Z Hubacek , V Hynek , I Iashvili , Y Ilchenko , R Illingworth , A S Ito , S Jabeen , M Jaffre , A Jayasinghe , M S Jeong , R Jesik , Ping Jiang , K Johns , E Johnson , Marvin Johnson , A Jonckheere , P Jonsson , J B Joshi , A W Jung , A Juste , E Kajfasz , D Karmanov , I Katsanos , R Kehoe , S Kermiche , N Khalatyan , A Khanov , A Kharchilava , Y N Kharzheev , I Kiselevich , J M Kohli , A V Kozelov , J Kraus , Ashok Kumar , A Kupco , T Kurca , V A Kuzmin , S Lammers , P Lebrun , He Seung Lee , S W Lee , W M Lee , X Lei , J Lellouch , Debiao Li , Huaifang Li , L Li , Q Z Li , J K Lim , D Lincoln , J Linnemann , V V Lipaev , R Lipton , H Liu , Yufeng Liu , A Lobodenko , M Lokajicek , R Lopes De Sa , R Lunagarcia , A L Lyon , A K A Maciel , R Madar , R Maganavillalba , S Malik , V L Malyshev , John C Mansour , J Martinezortega , R Mccarthy , C L Mcgivern , M M Meijer , A Melnitchouk , D Menezes , P G Mercadante , M Merkin , A Meyer , J Meyer , F Miconi , N K Mondal , M Mulhearn , E Nagy , M Narain , R Nayyar , H A Neal , J P Negret , P Neustroev , H T Nguyen , T Nunnemann , J Orduna , N Osman , J Osta , Amlan J Pal , N Parashar , V Parihar , S K Park , R Partridge , N Parua , A Patwa , B Penning , M Perfilov , Y Peters , K Petridis , G Petrillo , P Petroff , M A Pleier , V M Podstavkov , A V Popov , M Prewitt , D Price , N Prokopenko , Ji Qian , A Quadt , B Quinn , P N Ratoff , I Razumov , I Rippbaudot , F Rizatdinova , M Rominsky , Alonzo H Ross , C Royon , P Rubinov , R Ruchti , G Sajot , A Sanchezhernandez , M P Sanders , A S Santos , G Savage , L Sawyer , T Scanlon , R D Schamberger , Y Scheglov , H Schellman , C Schwanenberger , R Schwienhorst , J Sekaric , H Severini , E Shabalina , V Shary , S Shaw , A A Shchukin , V Simak , N B Skachkov , P Skubic , P Slattery , D Smirnov , G R Snow , J Snow , S Snyder , S Soeldnerrembold , L Sonnenschein , K Soustruznik , J Stark , D A Stoyanova , Maurice B Strauss , L Suter , P Svoisky , M Titov , V V Tokmenin , Y T Tsai , D Tsybychev , B Tuchming , C Tully , L Uvarov , S Uvarov , S Uzunyan , R Van Kooten , W M Van Leeuwen , N Varelas , E W Varnes , I A Vasilyev , A Y Verkheev , L S Vertogradov , M Verzocchi , M Vesterinen , D Vilanova , P Vokac , H D Wahl , M H L S Wang , J Warchol , G Watts , M Wayne , J Weichert , L Weltyrieger , M R J Williams , G W Wilson , M Wobisch , D R Wood , T R Wyatt , Yunfei Xie , R Yamada , Shangchi Yang , T Yasuda , Y A Yatsunenko , Weilan Ye , Zhiguo Ye , H Yin , K Yip , S W Youn , J M Yu , J Zennamo , T G Zhao , Bo Zhou , J Zhu , M Zielinski , D Zieminska , L Zivkovic PHYSICAL REVIEW D（2014）
摘要
We determine the fraction of events with double parton (DP) Scattering in a single p (p) over bar collisions at root s = 1.96 TeV in gamma + 3 jet and gamma + b/c jet + 2 jet events collected with the D0 detector and corresponding to an integrated luminosity of about 8.7 fb(-1). The DP fractions and effective cross sections (sigma(eff)) are measured for both event samples using the same kinematic selections. The measured DP fractions range from 0.21 to 0.17, with effective cross sections in the gamma + 3 jet and gamma + b/cjet + 2 jet samples of sigma(incl)(eff) = 12.7 +/- 0.2(stat) +/- 1.3(syst) mb and sigma(HF)(eff) = 14.6 +/- 0.6(stat) +/- 3.2(syst) mb, respectively.
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