6533b7d9fe1ef96bd126cd0b

RESEARCH PRODUCT

First Observation of Top Quark Production in the Forward Region

Lhcb CollaborationR. AaijB. AdevaM. AdinolfiA. AffolderZ. AjaltouniS. AkarJ. AlbrechtF. AlessioM. AlexanderS. AliG. AlkhazovP. Alvarez CartelleA. A. AlvesS. AmatoS. AmerioY. AmhisL. AnL. AnderliniJ. AndersonM. AndreottiJ. E. AndrewsR. B. ApplebyO. Aquines GutierrezF. ArchilliP. D'argentA. ArtamonovM. ArtusoE. AslanidesG. AuriemmaM. BaalouchS. BachmannJ. J. BackA. BadalovC. BaessoW. BaldiniR. J. BarlowC. BarschelS. BarsukW. BarterV. BatozskayaV. BattistaA. BayL. BeaucourtJ. BeddowF. BedeschiI. BediagaL. J. BelI. BelyaevE. Ben-haimG. BencivenniS. BensonJ. BentonA. BerezhnoyR. BernetA. BertolinM. -O. BettlerM. Van BeuzekomA. BienS. BifaniT. BirdA. BirnkrautA. BizzetiT. BlakeF. BlancJ. BlouwS. BluskV. BocciA. BondarN. BondarW. BoniventoS. BorghiM. BorsatoT. J. V. BowcockE. BowenC. BozziS. BraunD. BrettM. BritschT. BrittonJ. BrodzickaN. H. BrookA. BurscheJ. BuytaertS. CadedduR. CalabreseM. CalviM. Calvo GomezP. CampanaD. Campora PerezL. CapriottiA. CarboneG. CarboniR. CardinaleA. CardiniP. CarnitiL. CarsonK. Carvalho AkibaG. CasseL. CassinaL. Castillo GarciaM. CattaneoCh. CauetG. CavalleroR. CenciM. CharlesPh. CharpentierM. ChefdevilleS. ChenS. -F. CheungN. ChiapoliniM. ChrzaszczX. Cid VidalG. CiezarekP. E. L. ClarkeM. ClemencicH. V. CliffJ. ClosierV. CocoJ. CoganE. CognerasV. CogoniL. CojocariuG. CollazuolP. CollinsA. Comerma-montellsA. ContuA. CookM. CoombesS. CoquereauG. CortiM. CorvoB. CouturierG. A. CowanD. C. CraikA. CrocombeM. Cruz TorresS. CunliffeR. CurrieC. D'ambrosioJ. DalsenoP. N. Y. DavidA. DavisK. De BruynS. De CapuaM. De CianJ. M. De MirandaL. De PaulaW. De SilvaP. De SimoneC. -T. DeanD. DecampM. DeckenhoffL. Del BuonoN. D��l��ageM. DemmerD. DerkachO. DeschampsF. DettoriA. Di CantoF. Di RuscioH. DijkstraS. DonleavyF. DordeiM. DorigoA. Dosil Su��rezD. DossettA. DovbnyaK. DreimanisL. DufourG. DujanyF. DupertuisP. DuranteR. DzhelyadinA. DziurdaA. DzyubaS. EasoU. EgedeV. EgorychevS. EidelmanS. EisenhardtU. EitschbergerR. EkelhofL. EklundI. El RifaiCh. ElsasserS. ElyS. EsenH. M. EvansT. EvansA. FalabellaC. F��rberC. FarinelliN. FarleyS. FarryR. FayD. FergusonV. Fernandez AlborF. FerrariF. Ferreira RodriguesM. Ferro-luzziS. FilippovM. FioreM. FioriniM. FirlejC. FitzpatrickT. FiutowskiK. FohlP. FolM. FontanaF. FontanelliR. FortyO. FranciscoM. FrankC. FreiM. FrosiniJ. FuE. FurfaroA. Gallas TorreiraD. GalliS. GalloriniS. GambettaM. GandelmanP. GandiniY. GaoJ. Garc��a Pardi��asJ. GarofoliJ. Garra TicoL. GarridoD. GasconC. GasparU. GastaldiR. GauldL. GavardiG. GazzoniA. GeraciD. GerickE. GersabeckM. GersabeckT. GershonPh. GhezA. GianelleS. Gian��V. GibsonO. G. GirardL. GiubegaV. V. GligorovC. G��belD. GolubkovA. GolutvinA. GomesC. GottiM. Grabalosa G��ndaraR. Graciani DiazL. A. Granado CardosoE. Graug��sE. GraveriniG. GrazianiA. GrecuE. GreeningS. GregsonP. GriffithL. GrilloO. Gr��nbergB. GuiE. GushchinYu. GuzT. GysT. HadavizadehC. HadjivasiliouG. HaefeliC. HaenS. C. HainesS. HallB. HamiltonT. HampsonX. HanS. Hansmann-menzemerN. HarnewS. T. HarnewJ. HarrisonJ. HeT. HeadV. HeijneK. HennessyP. HenrardL. HenryJ. A. Hernando MorataE. Van HerwijnenM. He��A. HicheurD. HillM. HoballahC. HombachW. HulsbergenT. HumairN. HussainD. HutchcroftD. HyndsM. IdzikP. IltenR. JacobssonA. JaegerJ. JalochaE. JansA. JawaheryF. JingM. JohnD. JohnsonC. R. JonesC. JoramB. JostN. JurikS. KandybeiW. KansoM. KaracsonT. M. KarbachS. KarodiaM. KelseyI. R. KenyonM. KenzieT. KetelB. KhanjiC. KhurewathanakulS. KlaverK. KlimaszewskiO. KochebinaM. KolpinI. KomarovR. F. KoopmanP. KoppenburgM. KorolevM. KozeihaL. KravchukK. KreplinM. KrepsG. KrockerP. KrokovnyF. KruseW. KucewiczM. KucharczykV. KudryavtsevA. K. KuonenK. KurekT. KvaratskheliyaV. N. La ThiD. LacarrereG. LaffertyA. LaiD. LambertR. W. LambertG. LanfranchiC. LangenbruchB. LanghansT. LathamC. LazzeroniR. Le GacJ. Van LeerdamJ. -P. LeesR. Lef��vreA. LeflatJ. Lefran��oisO. LeroyT. LesiakB. LeveringtonY. LiT. LikhomanenkoM. LilesR. LindnerC. LinnF. LionettoB. LiuX. LiuD. LohS. LohnI. LongstaffJ. H. LopesD. LucchesiM. Lucio MartinezH. LuoA. LupatoE. LuppiO. LuptonF. MachefertF. MaciucO. MaevK. MaguireS. MaldeA. MalininG. MancaG. MancinelliP. ManningA. MapelliJ. MaratasJ. F. MarchandU. MarconiC. Marin BenitoP. MarinoR. M��rkiJ. MarksG. MartellottiM. MartinM. MartinelliD. Martinez SantosF. Martinez VidalD. Martins TostesA. MassafferriR. MatevA. MathadZ. MatheC. MatteuzziK. MatthieuA. MauriB. MaurinA. MazurovM. MccannJ. MccarthyA. McnabR. McnultyB. MeadowsF. MeierM. MeissnerD. MelnychukM. MerkD. A. MilanesM. -N. MinardD. S. MitzelJ. Molina RodriguezS. MonteilM. MorandinP. MorawskiA. Mord��M. J. MorelloJ. MoronA. B. MorrisR. MountainF. MuheimJ. M��llerK. M��llerV. M��llerM. MussiniB. MusterP. NaikT. NakadaR. NandakumarA. NandiI. NastevaM. NeedhamN. NeriS. NeubertN. NeufeldM. NeunerA. D. NguyenT. D. NguyenC. Nguyen-mauV. NiessR. NietN. NikitinT. NikodemD. NinciA. NovoselovD. P. O'hanlonA. Oblakowska-muchaV. ObraztsovS. OgilvyO. OkhrimenkoR. OldemanC. J. G. OnderwaterB. Osorio RodriguesJ. M. Otalora GoicocheaA. OttoP. OwenA. OyangurenA. PalanoF. PalomboM. PalutanJ. PanmanA. PapanestisM. PappagalloL. L. PappalardoC. PappenheimerC. ParkesG. PassalevaG. D. PatelM. PatelC. PatrignaniA. PearceA. PellegrinoG. PensoM. Pepe AltarelliS. PerazziniP. PerretL. PescatoreK. PetridisA. PetroliniM. PetruzzoE. Picatoste OlloquiB. PietrzykT. Pila��D. PinciA. PistoneA. PiucciS. PlayferM. Plo CasasusT. PoikelaF. PolciA. PoluektovI. PolyakovE. PolycarpoA. PopovD. PopovB. PopoviciC. PotteratE. PriceJ. D. PriceJ. PrisciandaroA. PritchardC. ProuveV. PugatchA. Puig NavarroG. PunziW. QianR. QuaglianiB. RachwalJ. H. RademackerB. RakotomiaramananaM. RamaM. S. RangelI. RaniukN. RauschmayrG. RavenF. RediS. ReichertM. M. ReidA. C. Dos ReisS. RicciardiS. RichardsM. RihlK. RinnertV. Rives MolinaP. RobbeA. B. RodriguesE. RodriguesJ. A. Rodriguez LopezP. Rodriguez PerezS. RoiserV. RomanovskyA. Romero VidalJ. W. RonayneM. RotondoJ. RouvinetT. RufH. RuizP. Ruiz VallsJ. J. Saborido SilvaN. SagidovaP. SailB. SaittaV. Salustino GuimaraesC. Sanchez MayordomoB. Sanmartin SedesR. SantacesariaC. Santamarina RiosM. SantimariaE. SantovettiA. SartiC. SatrianoA. SattaD. M. SaundersD. SavrinaM. SchillerH. SchindlerM. SchluppM. SchmellingT. SchmelzerB. SchmidtO. SchneiderA. SchopperM. SchubigerM. -H. SchuneR. SchwemmerB. SciasciaA. SciubbaA. SemennikovI. SeppN. SerraJ. SerranoL. SestiniP. SeyfertM. ShapkinI. ShapovalY. ShcheglovT. ShearsL. ShekhtmanV. ShevchenkoA. ShiresR. Silva CoutinhoG. SimiM. SirendiN. SkidmoreI. SkillicornT. SkwarnickiE. SmithE. SmithI. T. SmithJ. SmithM. SmithH. SnoekM. D. SokoloffF. J. P. SolerD. SouzaB. Souza De PaulaB. SpaanP. SpradlinS. SridharanF. StagniM. StahlS. StahlO. SteinkampO. StenyakinF. SterpkaS. StevensonS. StoicaS. StoneB. StoraciS. StrackaM. StraticiucU. StraumannL. SunW. SutcliffeK. SwientekS. SwientekV. SyropoulosM. SzczekowskiP. SzczypkaT. SzumlakS. T'jampensT. TekampeM. TeklishynG. TellariniF. TeubertC. ThomasE. ThomasJ. Van TilburgV. TisserandM. TobinJ. ToddS. TolkL. TomassettiD. TonelliS. Topp-joergensenN. TorrE. TournefierS. TourneurK. TrabelsiM. T. TranM. TreschAna TrisovicA. TsaregorodtsevP. TsopelasN. TuningA. UklejaA. UstyuzhaninU. UwerC. VaccaV. VagnoniG. ValentiA. VallierR. Vazquez GomezP. Vazquez RegueiroC. V��zquez SierraS. VecchiJ. J. VelthuisM. VeltriG. VenezianoM. VesterinenB. ViaudD. VieiraM. Vieites DiazX. Vilasis-cardonaA. VollhardtD. VolyanskyyD. VoongA. VorobyevV. VorobyevC. Vo��J. A. De VriesR. WaldiC. WallaceR. WallaceJ. WalshS. WandernothJ. WangD. R. WardN. K. WatsonD. WebsdaleA. WeidenM. WhiteheadD. WiednerG. WilkinsonM. WilkinsonM. WilliamsM. P. WilliamsM. WilliamsT. WilliamsF. F. WilsonJ. WimberleyJ. WishahiW. WislickiM. WitekG. WormserS. A. WottonS. WrightK. WyllieY. XieZ. XuZ. YangJ. YuX. YuanO. YushchenkoM. ZangoliM. ZavertyaevL. ZhangY. ZhangA. ZhelezovA. ZhokhovL. ZhongS. Zucchelli

subject

Top quarkParticle physicsPhysics MultidisciplinaryGeneral Physics and AstronomyFOS: Physical sciences7. Clean energy01 natural sciencesJets in large-Q2 scatteringSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentStandard ModelNONuclear physicsPhysics and Astronomy (all)High Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]RapiditySDG 7 - Affordable and Clean Energy010306 general physicsNuclear ExperimentPhysicslhcbMuon/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energyScience & Technology010308 nuclear & particles physicsPhysicsSettore FIS/01 - Fisica SperimentaleParticle physicsSigmaCharge (physics)Top quarkHEP14.70.FmPseudorapidity13.87.-aPhysical SciencesW boson14.65.HaProduction (computer science)High Energy Physics::ExperimentLHCFísica de partículesExperimentsDECAYParticle Physics - Experiment

description

Top quark production in the forward region in proton-proton collisions is observed for the first time. The W + b final state with W → μν is reconstructed using muons with a transverse momentum, p[subscript T], larger than 25 GeV in the pseudorapidity range 2.0 20  GeV. The results are based on data corresponding to integrated luminosities of 1.0 and 2.0  fb[superscript -1] collected at center-of-mass energies of 7 and 8 TeV by LHCb. The inclusive top quark production cross sections in the fiducial region are σ(top)[7  TeV] = 239 ± 53(stat) ± 33(syst) ± 24(theory)  fb, σ(top)[8  TeV] = 289 ± 43(stat) ± 40(syst) ± 29(theory)  fb.These results, along with the observed differential yields and charge asymmetries, are in agreement with next-to-leading order standard model predictions.

yearjournalcountryeditionlanguage
2015-09-08
10.1103/physrevlett.115.112001http://hdl.handle.net/10044/1/27210