학술논문

Measurement of forward top pair production in the dilepton channel in $pp$ collisions at $\sqrt{s}=13$ TeV
Document Type
Working Paper
Author
LHCb collaborationAaij, R.Adeva, B.Adinolfi, M.Ajaltouni, Z.Akar, S.Albrecht, J.Alessio, F.Alexander, M.Albero, A. AlfonsoAli, S.Alkhazov, G.Cartelle, P. AlvarezAlves Jr, A. A.Amato, S.Amerio, S.Amhis, Y.An, L.Anderlini, L.Andreassi, G.Andreotti, M.Andrews, J. E.Appleby, R. B.Archilli, F.d'Argent, P.Romeu, J. ArnauArtamonov, A.Artuso, M.Aslanides, E.Atzeni, M.Auriemma, G.Babuschkin, I.Bachmann, S.Back, J. J.Badalov, A.Baesso, C.Baker, S.Balagura, V.Baldini, W.Baranov, A.Barlow, R. J.Barschel, C.Barsuk, S.Barter, W.Baryshnikov, F.Batozskaya, V.Battista, V.Bay, A.Beddow, J.Bedeschi, F.Bediaga, I.Beiter, A.Bel, L. J.Beliy, N.Bellee, V.Belloli, N.Belous, K.Belyaev, I.Ben-Haim, E.Bencivenni, G.Benson, S.Beranek, S.Berezhnoy, A.Bernet, R.Berninghoff, D.Bertholet, E.Bertolin, A.Betancourt, C.Betti, F.Bettler, M. O.van Beuzekom, M.Bezshyiko, Ia.Bifani, S.Billoir, P.Birnkraut, A.Bizzeti, A.Bjørn, M.Blake, T.Blanc, F.Blusk, S.Bocci, V.Boettcher, T.Bondar, A.Bondar, N.Bordyuzhin, I.Borghi, S.Borisyak, M.Borsato, M.Bossu, F.Boubdir, M.Bowcock, T. J. V.Bowen, E.Bozzi, C.Braun, S.Brodzicka, J.Brundu, D.Buchanan, E.Burr, C.Bursche, A.Buytaert, J.Byczynski, W.Cadeddu, S.Cai, H.Calabrese, R.Calladine, R.Calvi, M.Gomez, M. CalvoCamboni, A.Campana, P.Perez, D. H. CamporaCapriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carniti, P.Carson, L.Akiba, K. CarvalhoCasse, G.Cassina, L.Cattaneo, M.Cavallero, G.Cenci, R.Chamont, D.Chapman, M. G.Charles, M.Charpentier, Ph.Chatzikonstantinidis, G.Chefdeville, M.Chen, S.Cheung, S. F.Chitic, S. -G.Chobanova, V.Chrzaszcz, M.Chubykin, A.Ciambrone, P.Vidal, X. CidCiezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coco, V.Cogan, J.Cogneras, E.Cogoni, V.Cojocariu, L.Collins, P.Colombo, T.Comerma-Montells, A.Contu, A.Coombs, G.Coquereau, S.Corti, G.Corvo, M.Sobral, C. M. CostaCouturier, B.Cowan, G. A.Craik, D. C.Crocombe, A.Torres, M. CruzCurrie, R.D'Ambrosio, C.Marinho, F. Da CunhaDa Silva, C. L.Dall'Occo, E.Dalseno, J.Davis, A.Francisco, O. De AguiarDe Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, P.Dean, C. T.Decamp, D.Del Buono, L.Delaney, B.Dembinski, H. -P.Demmer, M.Dendek, A.Derkach, D.Deschamps, O.Dettori, F.Dey, B.Di Canto, A.Di Nezza, P.Dijkstra, H.Dordei, F.Dorigo, M.Suárez, A. DosilDouglas, L.Dovbnya, A.Dreimanis, K.Dufour, L.Dujany, G.Durante, P.Durham, J. M.Dutta, D.Dzhelyadin, R.Dziewiecki, M.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, V.Eidelman, S.Eisenhardt, S.Eitschberger, U.Ekelhof, R.Eklund, L.Ely, S.Ene, A.Esen, S.Evans, H. M.Evans, T.Falabella, A.Farley, N.Farry, S.Fazzini, D.Federici, L.Fernandez, G.Declara, P. FernandezPrieto, A. FernandezFerrari, F.Lopes, L. FerreiraRodrigues, F. FerreiraFerro-Luzzi, M.Filippov, S.Fini, R. A.Fiorini, M.Firlej, M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fontana, M.Fontanelli, F.Forty, R.Lima, V. FrancoFrank, M.Frei, C.Fu, J.Funk, W.Furfaro, E.Färber, C.Gabriel, E.Torreira, A. GallasGalli, D.Gallorini, S.Gambetta, S.Gandelman, M.Gandini, P.Gao, Y.Martin, L. M. GarciaPardiñas, J. GarcíaTico, J. GarraGarrido, L.Gascon, D.Gaspar, C.Gavardi, L.Gazzoni, G.Gerick, D.Gersabeck, E.Gersabeck, M.Gershon, T.Ghez, Ph.Gianì, S.Gibson, V.Girard, O. G.Giubega, L.Gizdov, K.Gligorov, V. V.Golubkov, D.Golutvin, A.Gomes, A.Gorelov, I. V.Gotti, C.Govorkova, E.Grabowski, J. P.Diaz, R. GracianiCardoso, L. A. GranadoGraugés, E.Graverini, E.Graziani, G.Grecu, A.Greim, R.Griffith, P.Grillo, L.Gruber, L.Cazon, B. R. GrubergGrünberg, O.Gushchin, E.Guz, Yu.Gys, T.Göbel, C.Hadavizadeh, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hamilton, B.Han, X.Hancock, T. H.Hansmann-Menzemer, S.Harnew, N.Harnew, S. T.Hasse, C.Hatch, M.He, J.Hecker, M.Heinicke, K.Heister, A.Hennessy, K.Henrard, P.Henry, L.van Herwijnen, E.Heß, M.Hicheur, A.Hill, D.Hopchev, P. H.Hu, W.Huang, W.Huard, Z. C.Hulsbergen, W.Humair, T.Hushchyn, M.Hutchcroft, D.Ibis, P.Idzik, M.Ilten, P.Jacobsson, R.Jalocha, J.Jans, E.Jawahery, A.Jiang, F.John, M.Johnson, D.Jones, C. R.Joram, C.Jost, B.Jurik, N.Kandybei, S.Karacson, M.Kariuki, J. M.Karodia, S.Kazeev, N.Kecke, M.Keizer, F.Kelsey, M.Kenzie, M.Ketel, T.Khairullin, E.Khanji, B.Khurewathanakul, C.Kim, K. E.Kirn, T.Klaver, S.Klimaszewski, K.Klimkovich, T.Koliiev, S.Kolpin, M.Kopecna, R.Koppenburg, P.Kosmyntseva, A.Kotriakhova, S.Kozeiha, M.Kravchuk, L.Kreps, M.Kress, F.Krokovny, P.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kuonen, A. K.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lanfranchi, G.Langenbruch, C.Latham, T.Lazzeroni, C.Gac, R. LeLeflat, A.Lefrançois, J.Lefèvre, R.Lemaitre, F.Cid, E. LemosLenisa, P.Leroy, O.Lesiak, T.Leverington, B.Li, P. -R.Li, T.Li, Y.Li, Z.Liang, X.Likhomanenko, T.Lindner, R.Lionetto, F.Lisovskyi, V.Liu, X.Loh, D.Loi, A.Longstaff, I.Lopes, J. H.Lucchesi, D.Martinez, M. LucioLupato, A.Luppi, E.Lupton, O.Lusiani, A.Lyu, X.Machefert, F.Maciuc, F.Macko, V.Mackowiak, P.Maddrell-Mander, S.Maev, O.Maguire, K.Maisuzenko, D.Majewski, M. W.Malde, S.Malecki, B.Malinin, A.Maltsev, T.Manca, G.Mancinelli, G.Marangotto, D.Maratas, J.Marchand, J. F.Marconi, U.Benito, C. MarinMarinangeli, M.Marino, P.Marks, J.Martellotti, G.Martin, M.Martinelli, M.Santos, D. MartinezVidal, F. MartinezMassafferri, A.Matev, R.Mathad, A.Mathe, Z.Matteuzzi, C.Mauri, A.Maurice, E.Maurin, B.Mazurov, A.McCann, M.McNab, A.McNulty, R.Mead, J. V.Meadows, B.Meaux, C.Meier, F.Meinert, N.Melnychuk, D.Merk, M.Merli, A.Michielin, E.Milanes, D. A.Millard, E.Minard, M. -N.Minzoni, L.Mitzel, D. S.Mogini, A.Rodriguez, J. MolinaMombächer, T.Monroy, I. A.Monteil, S.Morandin, M.Morello, M. J.Morgunova, O.Moron, J.Morris, A. B.Mountain, R.Muheim, F.Mulder, M.Müller, D.Müller, J.Müller, K.Müller, V.Naik, P.Nakada, T.Nandakumar, R.Nandi, A.Nasteva, I.Needham, M.Neri, N.Neubert, S.Neufeld, N.Neuner, M.Nguyen, T. D.Nguyen-Mau, C.Nieswand, S.Niet, R.Nikitin, N.Nikodem, T.Nogay, A.O'Hanlon, D. P.Oblakowska-Mucha, A.Obraztsov, V.Ogilvy, S.Oldeman, R.Onderwater, C. J. G.Ossowska, A.Goicochea, J. M. OtaloraOwen, P.Oyanguren, A.Pais, P. R.Palano, A.Palutan, M.Panshin, G.Papanestis, A.Pappagallo, M.Pappalardo, L. L.Parker, W.Parkes, C.Passaleva, G.Pastore, A.Patel, M.Patrignani, C.Pearce, A.Pellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Pereima, D.Perret, P.Pescatore, L.Petridis, K.Petrolini, A.Petrov, A.Petruzzo, M.Olloqui, E. PicatostePietrzyk, B.Pietrzyk, G.Pikies, M.Pinci, D.Pisani, F.Pistone, A.Piucci, A.Placinta, V.Playfer, S.Casasus, M. PloPolci, F.Lener, M. PoliPoluektov, A.Polyakov, I.Polycarpo, E.Pomery, G. J.Ponce, S.Popov, A.Popov, D.Poslavskii, S.Potterat, C.Price, E.Prisciandaro, J.Prouve, C.Pugatch, V.Navarro, A. PuigPullen, H.Punzi, G.Qian, W.Qin, J.Quagliani, R.Quintana, B.Rachwal, B.Rademacker, J. H.Rama, M.Pernas, M. RamosRangel, M. S.Raniuk, I.Ratnikov, F.Raven, G.Salzgeber, M. RavonelReboud, M.Redi, F.Reichert, S.Reis, A. C. dosAlepuz, C. RemonRenaudin, V.Ricciardi, S.Richards, S.Rihl, M.Rinnert, K.Robbe, P.Robert, A.Rodrigues, A. B.Rodrigues, E.Lopez, J. A. RodriguezRogozhnikov, A.Roiser, S.Rollings, A.Romanovskiy, V.Vidal, A. RomeroRotondo, M.Rudolph, M. S.Ruf, T.Valls, P. RuizVidal, J. RuizSilva, J. J. SaboridoSadykhov, E.Sagidova, N.Saitta, B.Guimaraes, V. SalustinoMayordomo, C. SanchezSedes, B. SanmartinSantacesaria, R.Rios, C. SantamarinaSantimaria, M.Santovetti, E.Sarpis, G.Sarti, A.Satriano, C.Satta, A.Saunders, D. M.Savrina, D.Schael, S.Schellenberg, M.Schiller, M.Schindler, H.Schmelling, M.Schmelzer, T.Schmidt, B.Schneider, O.Schopper, A.Schreiner, H. F.Schubiger, M.Schune, M. H.Schwemmer, R.Sciascia, B.Sciubba, A.Semennikov, A.Sepulveda, E. S.Sergi, A.Serra, N.Serrano, J.Sestini, L.Seyfert, P.Shapkin, M.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, V.Siddi, B. G.Coutinho, R. Silvade Oliveira, L. SilvaSimi, G.Simone, S.Skidmore, N.Skwarnicki, T.Smith, I. T.Smith, J.Smith, M.Lavra, l. SoaresSokoloff, M. D.Soler, F. J. P.De Paula, B. SouzaSpaan, B.Spradlin, P.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Stefkova, S.Steinkamp, O.Stemmle, S.Stenyakin, O.Stepanova, M.Stevens, H.Stone, S.Storaci, B.Stracka, S.Stramaglia, M. E.Straticiuc, M.Straumann, U.Strokov, S.Sun, J.Sun, L.Swientek, K.Syropoulos, V.Szumlak, T.Szymanski, M.T'Jampens, S.Tayduganov, A.Tekampe, T.Tellarini, G.Teubert, F.Thomas, E.van Tilburg, J.Tilley, M. J.Tisserand, V.Tobin, M.Tolk, S.Tomassetti, L.Tonelli, D.Aoude, R. Tourinho JadallahTournefier, E.Traill, M.Tran, M. 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B.Zucchelli, S.
Source
J. High Energ. Phys. (2018) 2018: 174
Subject
High Energy Physics - Experiment
Language
Abstract
Forward top quark pair production is studied in $pp$ collisions in the $\mu eb$ final state using a data sample corresponding to an integrated luminosity of 1.93 fb$^{-1}$ collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The cross-section is measured in a fiducial region where both leptons have a transverse momentum greater than 20 GeV and a pseudorapidity between 2.0 and 4.5. The quadrature sum of the azimuthal separation and the difference in pseudorapidities, denoted $\Delta R$, between the two leptons must be larger than 0.1. The $b$-jet axis is required to be separated from both leptons by a $\Delta R$ of 0.5, and to have a transverse momentum in excess of 20 GeV and a pseudorapidity between 2.2 and 4.2. The cross-section is measured to be $$\sigma_{t\bar{t}}= 126\pm19\,(\mathrm{stat})\pm16\,(\mathrm{syst})\pm5\,(\mathrm{lumi})\,\,\mathrm{ fb}$$ where the first uncertainty is statistical, the second is systematic, and the third is due to the luminosity determination. The measurement is compatible with the Standard Model prediction.
Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2017-050.html