Measurement of forward $W\to eν$ production in $pp$ collisions at $\sqrt{s}=8\,$TeV
Creators: name: LHCb Collaboration
name: Aaij, R.
name: Adeva, B.
name: Adinolfi, M.
name: Ajaltouni, Z.
name: Akar, S.
name: Albrecht, J.
name: Alessio, F.
name: Alexander, M.
name: Ali, S.
name: Alkhazov, G.
name: Cartelle, P. Alvarez
name: Alves, A. A.
name: Amato, S.
name: Amerio, S.
name: Amhis, Y.
name: An, L.
name: Anderlini, L.
name: Andreassi, G.
name: Andreotti, M.
name: Andrews, J. E.
name: Appleby, R. B.
name: Gutierrez, O. Aquines
name: Archilli, F.
name: d'Argent, P.
name: Romeu, J. Arnau
name: Artamonov, A.
name: Artuso, M.
name: Aslanides, E.
name: Auriemma, G.
name: Baalouch, M.
name: Babuschkin, I.
name: Bachmann, S.
name: Back, J. J.
name: Badalov, A.
name: Baesso, C.
name: Baldini, W.
name: Barlow, R. J.
name: Barschel, C.
name: Barsuk, S.
name: Barter, W.
name: Batozskaya, V.
name: Batsukh, B.
name: Battista, V.
name: Bay, A.
name: Beaucourt, L.
name: Beddow, J.
name: Bedeschi, F.
name: Bediaga, I.
name: Bel, L. J.
name: Bellee, V.
name: Belloli, N.
name: Belous, K.
name: Belyaev, I.
name: Ben-Haim, E.
name: Bencivenni, G.
name: Benson, S.
name: Benton, J.
name: Berezhnoy, A.
name: Bernet, R.
name: Bertolin, A.
name: Betti, F.
name: Bettler, M. -O.
name: van Beuzekom, M.
name: Bezshyiko, I.
name: Bifani, S.
name: Billoir, P.
name: Bird, T.
name: Birnkraut, A.
name: Bitadze, A.
name: Bizzeti, A.
name: Blake, T.
name: Blanc, F.
name: Blouw, J.
name: Blusk, S.
name: Bocci, V.
name: Boettcher, T.
name: Bondar, A.
name: Bondar, N.
name: Bonivento, W.
name: Borgheresi, A.
name: Borghi, S.
name: Borisyak, M.
name: Borsato, M.
name: Bossu, F.
name: Boubdir, M.
name: Bowcock, T. J. V.
name: Bowen, E.
name: Bozzi, C.
name: Braun, S.
name: Britsch, M.
name: Britton, T.
name: Brodzicka, J.
name: Buchanan, E.
name: Burr, C.
name: Bursche, A.
name: Buytaert, J.
name: Cadeddu, S.
name: Calabrese, R.
name: Calvi, M.
name: Gomez, M. Calvo
name: Camboni, A.
name: Campana, P.
name: Perez, D. Campora
name: Perez, D. H. Campora
name: Capriotti, L.
name: Carbone, A.
name: Carboni, G.
name: Cardinale, R.
name: Cardini, A.
name: Carniti, P.
name: Carson, L.
name: Akiba, K. Carvalho
name: Casse, G.
name: Cassina, L.
name: Garcia, L. Castillo
name: Cattaneo, M.
name: Cauet, Ch.
name: Cavallero, G.
name: Cenci, R.
name: Charles, M.
name: Charpentier, Ph.
name: Chatzikonstantinidis, G.
name: Chefdeville, M.
name: Chen, S.
name: Cheung, S. -F.
name: Chobanova, V.
name: Chrzaszcz, M.
name: Vidal, X. Cid
name: Ciezarek, G.
name: Clarke, P. E. L.
name: Clemencic, M.
name: Cliff, H. V.
name: Closier, J.
name: Coco, V.
name: Cogan, J.
name: Cogneras, E.
name: Cogoni, V.
name: Cojocariu, L.
name: Collazuol, G.
name: Collins, P.
name: Comerma-Montells, A.
name: Contu, A.
name: Cook, A.
name: Coquereau, S.
name: Corti, G.
name: Corvo, M.
name: Sobral, C. M. Costa
name: Couturier, B.
name: Cowan, G. A.
name: Craik, D. C.
name: Crocombe, A.
name: Torres, M. Cruz
name: Cunliffe, S.
name: Currie, R.
name: D'Ambrosio, C.
name: Dall'Occo, E.
name: Dalseno, J.
name: David, P. N. Y.
name: Davis, A.
name: Francisco, O. De Aguiar
name: De Bruyn, K.
name: De Capua, S.
name: De Cian, M.
name: De Miranda, J. M.
name: De Paula, L.
name: De Serio, M.
name: De Simone, P.
name: Dean, C. -T.
name: Decamp, D.
name: Deckenhoff, M.
name: Del Buono, L.
name: Demmer, M.
name: Derkach, D.
name: Deschamps, O.
name: Dettori, F.
name: Dey, B.
name: Di Canto, A.
name: Dijkstra, H.
name: Dordei, F.
name: Dorigo, M.
name: Suárez, A. Dosil
name: Dovbnya, A.
name: Dreimanis, K.
name: Dufour, L.
name: Dujany, G.
name: Dungs, K.
name: Durante, P.
name: Dzhelyadin, R.
name: Dziurda, A.
name: Dzyuba, A.
name: Déléage, N.
name: Easo, S.
name: Ebert, M.
name: Egede, U.
name: Egorychev, V.
name: Eidelman, S.
name: Eisenhardt, S.
name: Eitschberger, U.
name: Ekelhof, R.
name: Eklund, L.
name: Elsasser, Ch.
name: Ely, S.
name: Esen, S.
name: Evans, H. M.
name: Evans, T.
name: Falabella, A.
name: Farley, N.
name: Farry, S.
name: Fay, R.
name: Fazzini, D.
name: Ferguson, D.
name: Albor, V. Fernandez
name: Prieto, A. Fernandez
name: Ferrari, F.
name: Rodrigues, F. Ferreira
name: Ferro-Luzzi, M.
name: Filippov, S.
name: Fini, R. A.
name: Fiore, M.
name: Fiorini, M.
name: Firlej, M.
name: Fitzpatrick, C.
name: Fiutowski, T.
name: Fleuret, F.
name: Fohl, K.
name: Fontana, M.
name: Fontanelli, F.
name: Forshaw, D. C.
name: Forty, R.
name: Lima, V. Franco
name: Frank, M.
name: Frei, C.
name: Fu, J.
name: Furfaro, E.
name: Färber, C.
name: Torreira, A. Gallas
name: Galli, D.
name: Gallorini, S.
name: Gambetta, S.
name: Gandelman, M.
name: Gandini, P.
name: Gao, Y.
name: Martin, L. M. Garcia
name: Pardiñas, J. García
name: Tico, J. Garra
name: Garrido, L.
name: Garsed, P. J.
name: Gascon, D.
name: Gaspar, C.
name: Gavardi, L.
name: Gazzoni, G.
name: Gerick, D.
name: Gersabeck, E.
name: Gersabeck, M.
name: Gershon, T.
name: Ghez, Ph.
name: Gianì, S.
name: Gibson, V.
name: Girard, O. G.
name: Giubega, L.
name: Gizdov, K.
name: Gligorov, V. V.
name: Golubkov, D.
name: Golutvin, A.
name: Gomes, A.
name: Gorelov, I. V.
name: Gotti, C.
name: Gándara, M. Grabalosa
name: Diaz, R. Graciani
name: Cardoso, L. A. Granado
name: Graugés, E.
name: Graverini, E.
name: Graziani, G.
name: Grecu, A.
name: Griffith, P.
name: Grillo, L.
name: Cazon, B. R. Gruberg
name: Grünberg, O.
name: Gushchin, E.
name: Guz, Yu.
name: Gys, T.
name: Göbel, C.
name: Hadavizadeh, T.
name: Hadjivasiliou, C.
name: Haefeli, G.
name: Haen, C.
name: Haines, S. C.
name: Hall, S.
name: Hamilton, B.
name: Han, X.
name: Hansmann-Menzemer, S.
name: Harnew, N.
name: Harnew, S. T.
name: Harrison, J.
name: Hatch, M.
name: He, J.
name: Head, T.
name: Heister, A.
name: Hennessy, K.
name: Henrard, P.
name: Henry, L.
name: Morata, J. A. Hernando
name: van Herwijnen, E.
name: Heß, M.
name: Hicheur, A.
name: Hill, D.
name: Hombach, C.
name: Hopchev, H.
name: Hulsbergen, W.
name: Humair, T.
name: Hushchyn, M.
name: Hussain, N.
name: Hutchcroft, D.
name: Iakovenko, V.
name: Idzik, M.
name: Ilten, P.
name: Jacobsson, R.
name: Jaeger, A.
name: Jalocha, J.
name: Jans, E.
name: Jawahery, A.
name: John, M.
name: Johnson, D.
name: Jones, C. R.
name: Joram, C.
name: Jost, B.
name: Jurik, N.
name: Kandybei, S.
name: Kanso, W.
name: Karacson, M.
name: Kariuki, J. M.
name: Karodia, S.
name: Kecke, M.
name: Kelsey, M.
name: Kenyon, I. R.
name: Kenzie, M.
name: Ketel, T.
name: Khairullin, E.
name: Khanji, B.
name: Khurewathanakul, C.
name: Kirn, T.
name: Klaver, S.
name: Klimaszewski, K.
name: Koliiev, S.
name: Kolpin, M.
name: Komarov, I.
name: Koopman, R. F.
name: Koppenburg, P.
name: Kozachuk, A.
name: Kozeiha, M.
name: Kravchuk, L.
name: Kreplin, K.
name: Kreps, M.
name: Krokovny, P.
name: Kruse, F.
name: Krzemien, W.
name: Kucewicz, W.
name: Kucharczyk, M.
name: Kudryavtsev, V.
name: Kuonen, A. K.
name: Kurek, K.
name: Kvaratskheliya, T.
name: Lacarrere, D.
name: Lafferty, G.
name: Lai, A.
name: Lambert, D.
name: Lanfranchi, G.
name: Langenbruch, C.
name: Langhans, B.
name: Latham, T.
name: Lazzeroni, C.
name: Gac, R. Le
name: van Leerdam, J.
name: Lees, J. -P.
name: Leflat, A.
name: Lefrançois, J.
name: Lefèvre, R.
name: Lemaitre, F.
name: Cid, E. Lemos
name: Leroy, O.
name: Lesiak, T.
name: Leverington, B.
name: Li, Y.
name: Likhomanenko, T.
name: Lindner, R.
name: Linn, C.
name: Lionetto, F.
name: Liu, B.
name: Liu, X.
name: Loh, D.
name: Longstaff, I.
name: Lopes, J. H.
name: Lucchesi, D.
name: Martinez, M. Lucio
name: Luo, H.
name: Lupato, A.
name: Luppi, E.
name: Lupton, O.
name: Lusiani, A.
name: Lyu, X.
name: Machefert, F.
name: Maciuc, F.
name: Maev, O.
name: Maguire, K.
name: Malde, S.
name: Malinin, A.
name: Maltsev, T.
name: Manca, G.
name: Mancinelli, G.
name: Manning, P.
name: Maratas, J.
name: Marchand, J. F.
name: Marconi, U.
name: Benito, C. Marin
name: Marino, P.
name: Marks, J.
name: Martellotti, G.
name: Martin, M.
name: Martinelli, M.
name: Santos, D. Martinez
name: Vidal, F. Martinez
name: Tostes, D. Martins
name: Massacrier, L. M.
name: Massafferri, A.
name: Matev, R.
name: Mathad, A.
name: Mathe, Z.
name: Matteuzzi, C.
name: Mauri, A.
name: Maurin, B.
name: Mazurov, A.
name: McCann, M.
name: McCarthy, J.
name: McNab, A.
name: McNulty, R.
name: Meadows, B.
name: Meier, F.
name: Meissner, M.
name: Melnychuk, D.
name: Merk, M.
name: Merli, A.
name: Michielin, E.
name: Milanes, D. A.
name: Minard, M. -N.
name: Mitzel, D. S.
name: Mogini, A.
name: Rodriguez, J. Molina
name: Monroy, I. A.
name: Monteil, S.
name: Morandin, M.
name: Morawski, P.
name: Mordà, A.
name: Morello, M. J.
name: Moron, J.
name: Morris, A. B.
name: Mountain, R.
name: Muheim, F.
name: Mulder, M.
name: Mussini, M.
name: Müller, D.
name: Müller, J.
name: Müller, K.
name: Müller, V.
name: Naik, P.
name: Nakada, T.
name: Nandakumar, R.
name: Nandi, A.
name: Nasteva, I.
name: Needham, M.
name: Neri, N.
name: Neubert, S.
name: Neufeld, N.
name: Neuner, M.
name: Nguyen, A. D.
name: Nguyen-Mau, C.
name: Nieswand, S.
name: Niet, R.
name: Nikitin, N.
name: Nikodem, T.
name: Novoselov, A.
name: O'Hanlon, D. P.
name: Oblakowska-Mucha, A.
name: Obraztsov, V.
name: Ogilvy, S.
name: Oldeman, R.
name: Onderwater, C. J. G.
name: Goicochea, J. M. Otalora
name: Otto, A.
name: Owen, P.
name: Oyanguren, A.
name: Pais, P. R.
name: Palano, A.
name: Palombo, F.
name: Palutan, M.
name: Panman, J.
name: Papanestis, A.
name: Pappagallo, M.
name: Pappalardo, L. L.
name: Parker, W.
name: Parkes, C.
name: Passaleva, G.
name: Pastore, A.
name: Patel, G. D.
name: Patel, M.
name: Patrignani, C.
name: Pearce, A.
name: Pellegrino, A.
name: Penso, G.
name: Altarelli, M. Pepe
name: Perazzini, S.
name: Perret, P.
name: Pescatore, L.
name: Petridis, K.
name: Petrolini, A.
name: Petrov, A.
name: Petruzzo, M.
name: Olloqui, E. Picatoste
name: Pietrzyk, B.
name: Pikies, M.
name: Pinci, D.
name: Pistone, A.
name: Piucci, A.
name: Playfer, S.
name: Casasus, M. Plo
name: Poikela, T.
name: Polci, F.
name: Poluektov, A.
name: Polyakov, I.
name: Polycarpo, E.
name: Pomery, G. J.
name: Popov, A.
name: Popov, D.
name: Popovici, B.
name: Poslavskii, S.
name: Potterat, C.
name: Price, E.
name: Price, J. D.
name: Prisciandaro, J.
name: Pritchard, A.
name: Prouve, C.
name: Pugatch, V.
name: Navarro, A. Puig
name: Punzi, G.
name: Qian, W.
name: Quagliani, R.
name: Rachwal, B.
name: Rademacker, J. H.
name: Rama, M.
name: Pernas, M. Ramos
name: Rangel, M. S.
name: Raniuk, I.
name: Raven, G.
name: Redi, F.
name: Reichert, S.
name: Reis, A. C. dos
name: Alepuz, C. Remon
name: Renaudin, V.
name: Ricciardi, S.
name: Richards, S.
name: Rihl, M.
name: Rinnert, K.
name: Molina, V. Rives
name: Robbe, P.
name: Rodrigues, A. B.
name: Rodrigues, E.
name: Lopez, J. A. Rodriguez
name: Perez, P. Rodriguez
name: Rogozhnikov, A.
name: Roiser, S.
name: Romanovskiy, V.
name: Vidal, A. Romero
name: Ronayne, J. W.
name: Rotondo, M.
name: Rudolph, M. S.
name: Ruf, T.
name: Valls, P. Ruiz
name: Silva, J. J. Saborido
name: Sadykhov, E.
name: Sagidova, N.
name: Saitta, B.
name: Guimaraes, V. Salustino
name: Mayordomo, C. Sanchez
name: Sedes, B. Sanmartin
name: Santacesaria, R.
name: Rios, C. Santamarina
name: Santimaria, M.
name: Santovetti, E.
name: Sarti, A.
name: Satriano, C.
name: Satta, A.
name: Saunders, D. M.
name: Savrina, D.
name: Schael, S.
name: Schellenberg, M.
name: Schiller, M.
name: Schindler, H.
name: Schlupp, M.
name: Schmelling, M.
name: Schmelzer, T.
name: Schmidt, B.
name: Schneider, O.
name: Schopper, A.
name: Schubert, K.
name: Schubiger, M.
name: Schune, M. -H.
name: Schwemmer, R.
name: Sciascia, B.
name: Sciubba, A.
name: Semennikov, A.
name: Sergi, A.
name: Serra, N.
name: Serrano, J.
name: Sestini, L.
name: Seyfert, P.
name: Shapkin, M.
name: Shapoval, I.
name: Shcheglov, Y.
name: Shears, T.
name: Shekhtman, L.
name: Shevchenko, V.
name: Shires, A.
name: Siddi, B. G.
name: Coutinho, R. Silva
name: de Oliveira, L. Silva
name: Simi, G.
name: Simone, S.
name: Sirendi, M.
name: Skidmore, N.
name: Skwarnicki, T.
name: Smith, E.
name: Smith, I. T.
name: Smith, J.
name: Smith, M.
name: Snoek, H.
name: Sokoloff, M. D.
name: Soler, F. J. P.
name: Souza, D.
name: De Paula, B. Souza
name: Spaan, B.
name: Spradlin, P.
name: Sridharan, S.
name: Stagni, F.
name: Stahl, M.
name: Stahl, S.
name: Stefko, P.
name: Stefkova, S.
name: Steinkamp, O.
name: Stemmle, S.
name: Stenyakin, O.
name: Stevenson, S.
name: Stoica, S.
name: Stone, S.
name: Storaci, B.
name: Stracka, S.
name: Straticiuc, M.
name: Straumann, U.
name: Sun, L.
name: Sutcliffe, W.
name: Swientek, K.
name: Syropoulos, V.
name: Szczekowski, M.
name: Szumlak, T.
name: T'Jampens, S.
name: Tayduganov, A.
name: Tekampe, T.
name: Tellarini, G.
name: Teubert, F.
name: Thomas, C.
name: Thomas, E.
name: van Tilburg, J.
name: Tisserand, V.
name: Tobin, M.
name: Tolk, S.
name: Tomassetti, L.
name: Tonelli, D.
name: Topp-Joergensen, S.
name: Toriello, F.
name: Tournefier, E.
name: Tourneur, S.
name: Trabelsi, K.
name: Traill, M.
name: Tran, M. T.
name: Tresch, M.
name: Trisovic, A.
name: Tsaregorodtsev, A.
name: Tsopelas, P.
name: Tully, A.
name: Tuning, N.
name: Ukleja, A.
name: Ustyuzhanin, A.
name: Uwer, U.
name: Vacca, C.
name: Vagnoni, V.
name: Valat, S.
name: Valenti, G.
name: Vallier, A.
name: Gomez, R. Vazquez
name: Regueiro, P. Vazquez
name: Vecchi, S.
name: van Veghel, M.
name: Velthuis, J. J.
name: Veltri, M.
name: Veneziano, G.
name: Venkateswaran, A.
name: Vernet, M.
name: Vesterinen, M.
name: Viaud, B.
name: Vieira, D.
name: Diaz, M. Vieites
name: Vilasis-Cardona, X.
name: Volkov, V.
name: Vollhardt, A.
name: Voneki, B.
name: Voong, D.
name: Vorobyev, A.
name: Vorobyev, V.
name: Voß, C.
name: de Vries, J. A.
name: Sierra, C. Vázquez
name: Waldi, R.
name: Wallace, C.
name: Wallace, R.
name: Walsh, J.
name: Wang, J.
name: Ward, D. R.
name: Wark, H. M.
name: Watson, N. K.
name: Websdale, D.
name: Weiden, A.
name: Whitehead, M.
name: Wicht, J.
name: Wilkinson, G.
name: Wilkinson, M.
name: Williams, M.
name: Williams, M. P.
name: Williams, M.
name: Williams, T.
name: Wilson, F. F.
name: Wimberley, J.
name: Wishahi, J.
name: Wislicki, W.
name: Witek, M.
name: Wormser, G.
name: Wotton, S. A.
name: Wraight, K.
name: Wright, S.
name: Wyllie, K.
name: Xie, Y.
name: Xing, Z.
name: Xu, Z.
name: Yang, Z.
name: Yin, H.
name: Yu, J.
name: Yuan, X.
name: Yushchenko, O.
name: Zangoli, M.
name: Zarebski, K. A.
name: Zavertyaev, M.
name: Zhang, L.
name: Zhang, Y.
name: Zhang, Y.
name: Zhelezov, A.
name: Zheng, Y.
name: Zhokhov, A.
name: Zhu, X.
name: Zhukov, V.
name: Zucchelli, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: A measurement of the cross-section for $W \to eν$ production in $pp$ collisions is presented using data corresponding to an integrated luminosity of $2\,$fb$^{-1}$ collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=8\,$TeV. The electrons are required to have more than $20\,$GeV of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. The inclusive $W$ production cross-sections, where the $W$ decays to $eν$, are measured to be \begin{equation*} σ_{W^{+} \to e^{+}ν_{e}}=1124.4\pm 2.1\pm 21.5\pm 11.2\pm 13.0\,\mathrm{pb}, \end{equation*} \begin{equation*} σ_{W^{-} \to e^{-}\barν_{e}}=\,\,\,809.0\pm 1.9\pm 18.1\pm\,\,\,7.0\pm \phantom{0}9.4\,\mathrm{pb}, \end{equation*} where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. Differential cross-sections as a function of the electron pseudorapidity are measured. The $W^{+}/W^{-}$ cross-section ratio and production charge asymmetry are also reported. Results are compared with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. Finally, in a precise test of lepton universality, the ratio of $W$ boson branching fractions is determined to be \begin{equation*} \mathcal{B}(W \to eν)/\mathcal{B}(W \to μν)=1.020\pm 0.002\pm 0.019, \end{equation*} where the first uncertainty is statistical and the second is systematic.
description: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-024.html