Collaboration, LAaij, R.Abellan Beteta, C.Adametz, A.Adeva, B.Adinolfi, M.Adrover, C.Affolder, A.Ajaltouni, Z.Albrecht, J.Alessio, F.Alexander, M.Ali, S.Alkhazov, G.Alvarez Cartelle, P.Alves, A. A. Jr.Amato, S.Amhis, Y.Anderson, J.Appleby, R. B.Aquines Gutierrez, O.Archilli, F.Artamonov, A.Artuso, M.Aslanides, E.Auriemma, G.Bachmann, S.Back, J. J.Balagura, V.Baldini, W.Barlow, R. J.Barschel, C.Barsuk, S.Barter, W.Bates, A.Bauer, C.Bauer, Th.Bay, A.Beddow, J.Bediaga, I.Belogurov, S.Belous, K.Belyaev, I.Ben-Haim, E.Benayoun, M.Bencivenni, G.Benson, S.Benton, J.Berezhnoy, A.Bernet, R.Bettler, M.-O.Van Beuzekom, M.Bien, A.Bifani, S.Bird, T.Bizzeti, A.Bjornstad, P. M.Blake, T.Blanc, F.Blanks, C.Blouw, J.Blusk, S.Bobrov, A.Bocci, V.Bondar, A.Bondar, N.Bonivento, W.Borghi, S.Borgia, A.Bowcock, T. J. V.Bozzi, C.Brambach, T.Van Den Brand, J.Bressieux, J.Brett, D.Britsch, M.Britton, T.Brook, N. H.Brown, H.Buechler-Germann, A.Burducea, I.Bursche, A.Buytaert, J.Cadeddu, S.Callot, O.Calvi, M.Calvo Gomez, M.Camboni, A.Campana, P.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carson, L.Carvalho Akiba, K.Casse, G.Cattaneo, M.Cauet, Ch.Charles, M.Charpentier, Ph.Chen, P.Chiapolini, N.Chrzaszcz, M.Ciba, K.Cid Vidal, X.Ciezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coca, C.Coco, V.Cogan, J.Cogneras, E.Collins, P.Comerma-Montells, A.Contu, A.Cook, A.Coombes, M.Corti, G.Couturier, B.Cowan, G. A.Craik, D.Currie, R.D'Ambrosio, C.David, P.David, P. N. Y.De Bonis, I.De Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Simone, P.Decamp, D.Deckenhoff, M.Degaudenzi, H.Del Buono, L.Deplano, C.Derkach, D.Deschamps, O.Dettori, F.Dickens, J.Dijkstra, H.Diniz Batista, P.Domingo Bonal, F.Donleavy, S.Dordei, F.Dosil Suarez, A.Dossett, D.Dovbnya, A.Dupertuis, F.Dzhelyadin, R.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, V.Eidelman, S.Van Eijk, D.Eisele, F.Eisenhardt, S.Ekelhof, R.Eklund, L.El Rifai, I.Elsasser, Ch.Elsby, D.Esperante Pereira, D.Falabella, A.Faerber, C.Fardell, G.Farinelli, C.Farry, S.Fave, V.Fernandez Albor, V.Ferreira Rodrigues, F.Ferro-Luzzi, M.Filippov, S.Fitzpatrick, C.Fontana, M.Fontanelli, F.Forty, R.Francisco, O.Frank, M.Frei, C.Frosini, M.Furcas, S.Gallas Torreira, A.Galli, D.Gandelman, M.Gandini, P.Gao, Y.Garnier, J.-C.Garofoli, J.Tico, J. GarraGarrido, L.Gascon, D.Gaspar, C.Gauld, R.Gauvin, N.Gersabeck, E.Gersabeck, M.Gershon, T.Ghez, Ph.Gibson, V.Gligorov, V. V.Goebel, C.Golubkov, D.Golutvin, A.Gomes, A.Gordon, H.Grabalosa Gandara, M.Graciani Diaz, R.Granado Cardoso, L. A.Grauges, E.Graziani, G.Grecu, A.Greening, E.Gregson, S.Gruenberg, O.Gui, B.Gushchin, E.Guz, Yu.Gys, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hampson, T.Hansmann-Menzemer, S.Harnew, N.Harnew, S. T.Harrison, J.Harrison, P. F.Hartmann, T.He, J.Heijne, V.Hennessy, K.Henrard, P.Hernando Morata, J. A.Van Herwijnen, E.Hicks, E.Hill, D.Hoballah, M.Hopchev, P.Hulsbergen, W.Hunt, P.Huse, T.Hussain, N.Huston, R. S.Hutchcroft, D.Hynds, D.Iakovenko, V.Ilten, P.Imong, J.Jacobsson, R.Jaeger, A.Hussein, M. JahjahJans, E.Jansen, F.Jaton, P.Jean-Marie, B.Jing, F.John, M.Johnson, D.Jones, C. R.Jost, B.Kaballo, M.Kandybei, S.Karacson, M.Karbach, T. M.Keaveney, J.Kenyon, I. R.Kerzel, U.Ketel, T.Keune, A.Khanji, B.Kim, Y. M.Knecht, M.Kochebina, O.Komarov, I.Koopman, R. F.Koppenburg, P.Korolev, M.Kozlinskiy, A.Kravchuk, L.Kreplin, K.Kreps, M.Krocker, G.Krokovny, P.Kruse, F.Kruzelecki, K.Kucharczyk, M.Kudryavtsev, V.Kvaratskheliya, T.Thi, V. N. LaLacarrere, D.Lafferty, G.Lai, A.Lambert, D.Lambert, R. W.Lanciotti, E.Lanfranchi, G.Langenbruch, C.Latham, T.Lazzeroni, C.Le Gac, R.Van Leerdam, J.Lees, J.-P.Lefevre, R.Leflat, A.Lefrancois, J.Leroy, O.Lesiak, T.Li, L.Li, Y.Gioi, L. LiLieng, M.Liles, M.Lindner, R.Linn, C.Liu, B.Liu, G.Von Loeben, J.Lopes, J. H.Lopez Asamar, E.Lopez-March, N.Lu, H.Luisier, J.Mac Raighne, A.Machefert, F.Machikhiliyan, I. V.Maciuc, F.Maev, O.Magnin, J.Malde, S.Mamunur, R. M. D.Manca, G.Mancinelli, G.Mangiafave, N.Marconi, U.Maerki, R.Marks, J.Martellotti, G.Martens, A.Martin, L.Sanchez, A. MartinMartinelli, M.Martinez Santos, D.Massafferri, A.Mathe, Z.Matteuzzi, C.Matveev, M.Maurice, E.Maynard, B.Mazurov, A.Mccarthy, J.Mcgregor, G.Mcnulty, R.Meissner, M.Merk, M.Merkel, J.Milanes, D. A.Minard, M.-N.Molina Rodriguez, J.Monteil, S.Moran, D.Morawski, P.Mountain, R.Mous, I.Muheim, F.Mueller, K.Muresan, R.Muryn, B.Muster, B.Mylroie-Smith, J.Naik, P.Nakada, T.Nandakumar, R.Nasteva, I.Needham, M.Neufeld, N.Nguyen, A. D.Nguyen-Mau, C.Nicol, M.Niess, V.Nikitin, N.Nikodem, T.Nomerotski, A.Novoselov, A.Oblakowska-Mucha, A.Obraztsov, V.Oggero, S.Ogilvy, S.Okhrimenko, O.Oldeman, R.Orlandea, M.Otalora Goicochea, J. M.Owen, P.Pal, B. K.Palacios, J.Palano, A.Palutan, M.Panman, J.Papanestis, A.Pappagallo, M.Parkes, C.Parkinson, C. J.Passaleva, G.Patel, G. D.Patel, M.Patrick, G. N.Patrignani, C.Pavel-Nicorescu, C.Pazos Alvarez, A.Pellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Perego, D. L.Perez Trigo, E.Perez-Calero Yzquierdo, A.Perret, P.Perrin-Terrin, M.Pessina, G.Petrolini, A.Phan, A.Olloqui, E. PicatosteValls, B. PiePietrzyk, B.Pilar, T.Pinci, D.Plackett, R.Playfer, S.Plo Casasus, M.Polci, F.Polok, G.Poluektov, A.Polycarpo, E.Popov, D.Popovici, B.Potterat, C.Powell, A.Prisciandaro, J.Pugatch, V.Puig Navarro, A.Qian, W.Rademacker, J. H.Rakotomiaramanana, B.Rangel, M. S.Raniuk, I.Raven, G.Redford, S.Reid, M. M.Dos Reis, A. C.Ricciardi, S.Richards, A.Rinnert, K.Romero, D. A. RoaRobbe, P.Rodrigues, E.Rodriguez Perez, P.Rogers, G. J.Roiser, S.Romanovsky, V.Rosello, M.Rouvinet, J.Ruf, T.Ruiz, H.Sabatino, G.Saborido Silva, J. J.Sagidova, N.Sail, P.Saitta, B.Salzmann, C.Sanmartin Sedes, B.Sannino, M.Santacesaria, R.Santamarina Rios, C.Santinelli, R.Santovetti, E.Sapunov, M.Sarti, A.Satriano, C.Satta, A.Savrie, M.Savrina, D.Schaack, P.Schiller, M.Schindler, H.Schleich, S.Schlupp, M.Schmelling, M.Schmidt, B.Schneider, O.Schopper, A.Schune, M.-H.Schwemmer, R.Sciascia, B.Sciubba, A.Seco, M.Semennikov, A.Senderowska, K.Sepp, I.Serra, N.Serrano, J.Seyfert, P.Shapkin, M.Shapoval, I.Shatalov, P.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, O.Shevchenko, V.Shires, A.Silva Coutinho, R.Skwarnicki, T.Smith, N. A.Smith, E.Smith, M.Sobczak, K.Soler, F. J. P.Solomin, A.Soomro, F.Souza, D.Souza De Paula, B.Spaan, B.Sparkes, A.Spradlin, P.Stagni, F.Stahl, S.Steinkamp, O.Stoica, S.Stone, S.Storaci, B.Straticiuc, M.Straumann, U.Subbiah, V. K.Swientek, S.Szczekowski, M.Szczypka, P.Szumlak, T.T'Jampens, S.Teklishyn, M.Teodorescu, E.Teubert, F.Thomas, C.Thomas, E.Van Tilburg, J.Tisserand, V.Tobin, M.Tolk, S.Topp-Joergensen, S.Torr, N.Tournefier, E.Tourneur, S.Tran, M. T.Tsaregorodtsev, A.Tuning, N.Ubeda Garcia, M.Ukleja, A.Uwer, U.Vagnoni, V.Valenti, G.Vazquez Gomez, R.Vazquez Regueiro, P.Vecchi, S.Velthuis, J. J.Veltri, M.Vesterinen, M.Viaud, B.Videau, I.Vieira, D.Vilasis-Cardona, X.Visniakov, J.Vollhardt, A.Volyanskyy, D.Voong, D.Vorobyev, A.Vorobyev, V.Voss, C.Voss, H.Waldi, R.Wallace, R.Wandernoth, S.Wang, J.Ward, D. R.Watson, N. K.Webber, A. D.Websdale, D.Whitehead, M.Wicht, J.Wiedner, D.Wiggers, L.Wilkinson, G.Williams, M. P.Williams, M.Wilson, F. F.Wishahi, J.Witek, M.Witzeling, W.Wotton, S. A.Wright, S.Wu, S.Wyllie, K.Xie, Y.Xing, F.Xing, Z.Yang, Z.Young, R.Yuan, X.Yushchenko, O.Zangoli, M.Zavertyaev, M.Zhang, F.Zhang, L.Zhang, W. C.Zhang, Y.Zhelezov, A.Zhong, L.Zvyagin, A.2013-02-272013-02-272013-02-27201210.1140/epjc/s10052-012-2168-xhttps://infoscience.epfl.ch/handle/20.500.14299/89399WOS:000310609100028The charged-particle production ratios (p) over bar /p, K-/K+, pi(-)/pi(+), (p+(p) over bar)/(pi(+)/pi(-)), (K++K-)/(pi(+)/pi(-)) and (p+(p) over bar)/(K++K-) are measured with the LHCb detector using 0.3 nb(-1) of pp collisions delivered by the LHC at root s = 0.9 TeV and 1.8 nb(-1) at root s = 7 TeV. The measurements are performed as a function of transverse momentum p(T) and pseudorapidity eta. The production ratios are compared to the predictions of several Monte Carlo generator settings, none of which are able to describe adequately all observables. The ratio (p) over bar /p is also considered as a function of rapidity loss, Delta y equivalent to y(beam) - y, and is used to constrain models of baryon transport.text::journal::journal article::research article