Combination and QCD analysis of charm production cross section measurements in deep-inelastic ep scattering at HERA

H Abramowicz,J Žáček,S Magill,D South,H Meyer,A Bylinkin,W Hain,T W Jones,T Naumann,E Brownson,J Malka,C Vallée,E Tassi,G Grzelak,E Lobodzinska,H Pirumov,V Palichik,R Mankel,M Lisovyi,I.-A Melzer-Pellmann,T Theedt,H Wolfe,A Petrukhin,R Felst,S Yamada,I O Skillicorn,E Elsen,J Cvach,G D’Agostini,L Adamczyk,J Kretzschmar,W Perlański,J Gayler,A Gizhko,M Derrick,A Lebedev,N Stefaniuk,P Sopicki,V Libov,T Kanno,J Sztuk-Dambietz,O Bachynska,R Shehzadi,R Hori,A Valkárová,D P C Sankey,I Milcewicz-Mika,A Nigro,C Kiesling,A Caldwell,G Bruni,O Arslan,F Sefkow,M Kuze,M Schioppa,N Kondrashova,P Robmann,M Arneodo,L Wiggers,A Specka,J M Pawlak,S Fazio,M Jacquet,N S Pokrovskiy,H Jung,S Kitamura,W H Smith,W Lohmann,M I Ferrero,P Schleper,I Brock,W Słomiński,C Gwenlan,R Plačakytė,C Alexa,L Schoeffel,O Viazlo,V Brisson,P Kooijman,S Shushkevich,J Behr,A Solano,I Makarenko,J Schwartz,M Ishitsuka,P D Thompson,H Tiecke,A N Barakbaev,J Feltesse,M Basile,A M Cooper-Sarkar,B List,B Brzozowska,R K Dementiev,A Stern,I Grabowska-Bołd,S Levonian,R Nania,E Malinovski,U Samson,A Pellegrino,A Levy,A Fedotov,L Favart,R Carlin,B Foster,K Wichmann,P R Newman,T Bołd,S Dusini,L Bellagamba,B Bylsma,E Hilger,S Ghazaryan,R Klanner,J Ciborowski,F Mohamad Idris,T H Tran,M Adamus,Z Staykova,R C W Henderson,D Britzger,M Klein,G Grindhammer,B Pokorny,R Kogler,L Bystritskaya,E Gallo,V Aushev,O Turkot,R Yoshida,M Herbst,E A De Wolf,Y Aushev,J D Morris,N Zhmak,K Lipka,C Blohm,A Fomenko,V Chekelian,M Ruspa,M Wlasenko,M Rotaru,R Horisberger,O Gueta,G Dolinska,D Nikitin,A Bamberger,A T Doyle,W Bartel,A Belousov,V Trusov,E Lohrmann,D Šálek,K Daum,M Bindi,M Hildebrandt,R Ingbir,E Rizvi,J Meyer,A Polini,A Rostovtsev,J G Contreras,H Hartmann,U Straumann,U Klein,E Sauvan,H Perrey,J B Dainton,L S Durkin,A Keramidas,N Okazaki,G Eckerlin,O Kuprash,R Hamatsu,Z Zolkapli,J Figiel,W B Schmidke,P Roloff,M Gouzevitch,S Schmitt,G Herrera,D Notz,A Eskreys,S Kananov,P Van Mechelen,V Lendermann,A F Żarnecki,J Grebenyuk,G Brandt,J Delvax,Y Iga,P Laycock,G Stoicea,J Szuba,G Bari,J E Olsson,M Wing,E Gabathuler,Y Yamazaki,D Haidt,A Lee,T Nobe,M Capua,J Tomaszewska,F Cindolo,Y Vazdik,J C Hart,V Boudry,T Tymieniecka,B Pawlik,D Lontkovskyi,Y Onishchuk,L Suszycki,N Gogitidze,M Costa,C Glasman,V Lubimov,P Kaur,A Glazov,F Karstens,H Henschel,C Youngman,A Mehta,T Ravdandorj,M Turcato,J Ferencei,S Schlenstedt,A Bertolin,U Karshon,S Shimizu,R Aggarwal,S Miglioranzi,K Wrona,K Papageorgiu,Y Soloviev,X Janssen,M Kapichine,T Hreus,I A Korzhavina,K H Hiller,D Szuba,L A Khein,G Marini,M Steder,F Corriveau,A Galas,V Dodonov,A Zichichi,A Garfagnini,J Turnau,S Mergelmeyer,K Mujkic,H Zohrabyan,K Nowak,P Pahl,G Susinno,V Sosnovtsev,M Corradi,S De Pasquale,R Walczak,H Stadie,S Bhadra,F Januschek,G Grigorescu,B Tseepeldorj,G Barbagli,D H Saxon,T Haas,A Bunyatyan,J Ferrando,A Contin,D Hoffmann,V Drugakov,J V Morris,U Behrens,G Wolf,V Spaskov,A Longhin,J Y Kim,S Habib,V Andreev,O Zenaiev,F Dal Corso,L K Gladilin,C Niebuhr,P Kostka,A Bruni,S J Maxfield,K Borras,I Tsakov,T Greenshaw,A Baghdasaryan,O Zabiegalov,I Abt,F Sciulli,O Gogota,N Bartosik,N Coppola,K Tokushuku,M Kaur,E Paul,B Reisert,P Antonioli,A Geiser,A Montanari,D Gladkov,C Diaconu,D Boscherini,K Piotrzkowski,M Przybycień,Y Eisenberg,S Baghdasaryan,D Dobur,G Sartorelli,C Grab,R Žlebčík,P G Pelfer,J F Martin,A Margotti,B Musgrave,F Barreiro,A Kotański,K Nagano,K Begzsuren,R Ciesielski,C D Catterall,A Raval,G Laštovička-Medin,S Mikocki,D Bartsch,V Radescu,R Polifka,J Repond,S Egli,D Hochman,H Kowalski,L Goerlich,I Rubinsky,M Sauter,E Hennekemper,I R Kenyon,O Behnke,D Ozerov,A Parenti,K B Cantun Avila,G Hartner,R Brugnera,A Grebenyuk,D Pitzl,E Koffeman,A Verbytskyi,C Kleinwort,C Pascaud,M Dobre,L Cifarelli,A Stifutkin,A E Nuncio-Quiroz,A W Jung,G D Patel,T Namsoo,P Stopa,J J Whitmore,S Antonelli,P Reimer,R J Nowak,J Del Peso,B Stella,J Maeda,L Jönsson,S Limentani,D Kisielewska,M P J Landon,S Suchkov,A J Campbell,P Pluciński,V Monaco,R Sacchi,A Mastroberardino,J Terrón,F Moreau,D Wegener,I Gialas,S Chekanov,R Roosen,U Schneekloth,G Nowak,T Tsurugai,R C E Devenish,V Bokhonov,J E Ruiz Tabasco,O Kononenko,T Y Ling,B A Dolgoshein,K Olkiewicz,V Sola,B B Levchenko,W Lange,M Fleischer,D Traynor,T P Stewart,F Zomer,D Bot,M Vázquez,A Morozov,A Dossanov,B Kahle,M.c.k Mattingly ,Kyrylo Bondarenko ,G P Gach ,B Loehr ,L.m Shcheglova ,Z L Ren ,E Boos ,A Schoening ,M Pandurović ,K Černý ,N Bruemmer ,I M Gregor ,K Mueller ,Florian Huber ,M P Guzik ,I Katkov ,Inderpal Singh ,L Stančo ,Bogdan Povh ,I Pićurić ,J Braciník ,Zhiqing Philippe Zhang ,M Juengst ,A I Robertson ,J J Chwastowski ,Olga Lukina ,Zainol Abidin Ibrahim ,P Truoel ,J Hladký ,A Savin ,Wan Ahmad Tajuddin Wan Abdullah ,Federico Alberto Ceccopieri ,P Goettlicher ,Martin Brinkmann ,B.y Oh ,K Long ,P Bussey ,J Zálešâk ,A G Yaguees-Molina ,D.s Zotkin ,А Антонов ,Pavel A Belov ,S S Fang ,D Reeder ,B Łobodziński ,D C Son ,R López-Fernández ,D Fischer ,T Sýkora ,E Wuensch ,А Спиридонов ,Jenny List ,N Vlasov ,H U Martyn ,Ning Ye ,T Schöerner-Sadenius ,N Raičević ,I Božović-Jelisavc̆ić ,S V Rusakov ,H.‐P Jakob ,K Krueger ,U Koetz ,H.‐C Schultz‐Coulon ,І Каденко ,M Kraemer ,Ie Korol ,Yu A Golubkov ,Andreas Bernhard Meyer ,A Tapper ,V Schoenberg ,E Pérez ,P Ermolov ,Y.d Ri ,A Huettmann ,B.o Zhautykov ,Wolfram Dietrich Zeuner ,A.s Proskuryakov

doi:10.1140/epjc/s10052-013-2311-3

Abstract

Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections \(\sigma_{\rm red}^{c\bar{c}}\) for charm production are obtained in the kinematic range of photon virtuality 2.5≤Q2≤2000 GeV2 and Bjorken scaling variable 3⋅10−5≤x≤5⋅10−2. The combination method accounts for the correlations of the systematic uncertainties among the different data sets. The combined charm data together with the combined inclusive deep-inelastic scattering cross sections from HERA are used as input for a detailed NLO QCD analysis to study the influence of different heavy flavour schemes on the parton distribution functions. The optimal values of the charm mass as a parameter in these different schemes are obtained. The implications on the NLO predictions for W± and Z production cross sections at the LHC are investigated. Using the fixed flavour number scheme, the running mass of the charm quark is determined.

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