Measurement of V0 production ratios in pp collisions at √- s=0.9 and 7 TeV

Aaij, R. et al. (2011) Measurement of V0 production ratios in pp collisions at √- s=0.9 and 7 TeV. Journal of High Energy Physics, 2011(8), 34. (doi: 10.1007/JHEP08(2011)034)

[img]
Preview
Text
64474.pdf - Published Version
Available under License Creative Commons Attribution.

489kB

Abstract

The Λ/Λ and Λ/K0 S production ratios are measured by the LHCb detector from 0.3 nb−1 of pp collisions delivered by the LHC at √ s = 0.9 TeV and 1.8 nb−1 at √ s = 7 TeV. Both ratios are presented as a function of transverse momentum, pT, and rapidity, y, in the ranges 0.15 < pT < 2.50 GeV/c and 2.0 < y < 4.5. Results at the two energies are in good agreement as a function of rapidity loss, ∆y = ybeam − y, and are consistent with previous measurements. The ratio Λ/Λ, measuring the transport of baryon number from the collision into the detector, is smaller in data than predicted in simulation, particularly at high rapidity. The ratio Λ/K0 S , measuring the baryon-to-meson suppression in strange quark hadronisation, is significantly larger than expected.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Pappagallo, Dr Marco and Ogilvy, Mr Stephen and Alexander, Dr Michael and Soler, Professor Paul and Sail, Mr Paul and Borghi, Dr Silvia and Hynds, Mr Daniel and Spradlin, Dr Patrick and Plackett, Dr Richard and Rodrigues, Dr Eduardo and Eklund, Professor Lars and Parkes, Dr Christopher and Bates, Mrs Alison
Authors: Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Cartelle, P.A., Alves, A.A., Amato, S., Amhis, Y., Anderson, J., Appleby, R.B., Gutierrez, O.A., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J.J., Bailey, D.S., Balagura, V., Baldini, W., Barlow, R.J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, T., Bay, A., Bediaga, I., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Bernet, R., Bettler, M.-O., Beuzekom, M., Bien, A., Bifani, S., Bizzeti, A., Bjørnstad, 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., Brand, J., Bressieux, J., Brett, D., Brisbane, S., Britsch, M., Britton, T., Brook, N.H., Büchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Caicedo Carvajal, J.M., 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., Charles, M., Charpentier, P., Chiapolini, N., Cid Vidal, X., Ciezarek, G., Clarke, P.E.L., Clemencic, M., Cliff, H.V., Closier, J., Coca, C., Coco, V., Cogan, J., Collins, P., Constantin, F., Conti, G., Contu, A., Coombes, M., Corti, G., Cowan, G.A., Currie, R., D’Almagne, B., D’Ambrosio, C., David, P., Bonis, I., Capua, S., Cian, M., Lorenzi, F., Miranda, J.M., Paula, L., Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Deissenroth, M., Buono, L., Deplano, C., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Diniz Batista, P., Dossett, D., Dovbnya, O., Dupertuis, F., Dzhelyadin, R., Eames, C., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eijk, D., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., Elsasser, C., d’Enterria, D.G., Esperante Pereira, D., Estève, L., Falabella, A., Fanchini, E., Färber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Fernandez Albor, V., Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Frank, M., Frei, C., Frosini, M., Furcas, S., Gallas Torreira, A., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J.-C., Garofoli, J., Garra Tico, J., Garrido, L., Gaspar, C., Gauvin, N., Gersabeck, M., Gershon, T., Ghez, P., Gibson, V., Gligorov, V.V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L.A., Graugés, E., Graziani, G., Grecu, A., Gregson, S., Gui, B., Gushchin, E., Guz, Y., Gys, T., Haefeli, G., Haen, C., Haines, S.C., Hampson, T., Hansmann-Menzemer, S., Harji, R., Harnew, N., Harrison, J., Harrison, P.F., He, J., Heijne, V., Hennessy, K., Henrard, P., Hernando Morata, J.A., Herwijnen, E., Hofmann, W., Holubyev, K., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Huston, R.S., Hutchcroft, D., Hynds, D., Iakovenko, V., Ilten, P., Imong, J., Jacobsson, R., Jaeger, A., Jahjah Hussein, M., Jans, E., Jansen, F., Jaton, P., Jean-Marie, B., Jing, F., John, M., Johnson, D., Jones, C.R., Jost, B., Kandybei, S., Karacson, M., Karbach, T.M., Keaveney, J., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y.M., Knecht, M., Koblitz, S., Koppenburg, P., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kruzelecki, K., Kucharczyk, M., Kukulak, S., Kumar, R., Kvaratskheliya, T., La Thi, V.N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R.W., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Le Gac, R., Leerdam, J., Lees, J.-P., Lefèvre, R., Leflat, A., Lefranccois, J., Leroy, O., Lesiak, T., Li, L., Li, Y.Y., Gioi, L.L., Lieng, M., Lindner, R., Linn, C., Liu, B., Liu, G., Lopes, J.H., Lopez Asamar, E., Lopez-March, N., Luisier, J., 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., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martín Sánchez, A., Martinez Santos, D., Massafferri, A., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., Maynard, B., Mazurov, A., McGregor, G., McNulty, R., Mclean, C., Meissner, M., Merk, M., Merkel, J., Messi, R., Miglioranzi, S., Milanes, D.A., Minard, M.-N., Monteil, S., Moran, D., Morawski, P., Morris, J.V., Mountain, R., Mous, I., Muheim, F., Müller, K., Muresan, R., Muryn, B., Musy, M., Naik, P., Nakada, T., Nandakumar, R., Nardulli, J., Nasteva, I., Nedos, M., Needham, M., Neufeld, N., Nguyen-Mau, C., Nicol, M., Nies, S., Niess, V., Nikitin, N., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Otalora Goicochea, J.M., Owen, P., Pal, B., Palacios, J., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C.J., Passaleva, G., Patel, G.D., Patel, M., Paterson, S.K., Patrick, G.N., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Pérez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petrella, A., Petrolini, A., Pie Valls, B., Pietrzyk, B., Pilar, T., Pinci, D., Plackett, R., Playfer, S., Plo Casasus, M., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., Pree, T., Prisciandaro, J., Pugatch, V., Puig Navarro, A., Qian, W., Rademacker, J.H., Rakotomiaramanana, B., Raniuk, I., Raven, G., Redford, S., Reid, M.M., Reis, A.C., Ricciardi, S., Rinnert, K., Roa Romero, D.A., Robbe, P., Rodrigues, E., Rodrigues, F., Rodriguez Perez, P., Rogers, G.J., Romanovsky, V., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Saborido Silva, J.J., Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sannino, M., Santacesaria, R., Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schleich, S., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M.-H., Schwemmer, R., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shao, B., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Silva Coutinho, R., Skottowe, H.P., Skwarnicki, T., Smith, A.C., Smith, N.A., Sobczak, K., Soler, F.J.P., Solomin, A., Soomro, F., Paula, B.S., Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Styles, N., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., T’Jampens, S., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., Tilburg, J., Tisserand, V., Tobin, M., Topp-Joergensen, S., Tran, M.T., Tsaregorodtsev, A., Tuning, N., Ukleja, A., Urquijo, P., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J.J., Veltri, M., Vervink, K., Viaud, B., Videau, I., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Voong, D., Vorobyev, A., Voss, H., Wacker, K., Wandernoth, S., Wang, J., Ward, D.R., Webber, A.D., Websdale, D., Whitehead, M., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M.P., Williams, M., Wilson, F.F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S.A., Wyllie, K., Xie, Y., Xing, F., Yang, Z., Young, R., Yushchenko, O., Zavertyaev, M., Zhang, L., Zhang, W.C., Zhang, Y., Zhelezov, A., Zhong, L., Zverev, E., and Zvyagin, A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of High Energy Physics
Publisher:Springer
ISSN:1126-6708
ISSN (Online):1029-8479
Published Online:08 August 2011
Copyright Holders:Copyright © 2011 CERN, for the benefit of the LHCb collaboration
First Published:First published in Journal of High Energy Physics 2011(8): 34
Publisher Policy:Reproduced under a Creative Commons license

University Staff: Request a correction | Enlighten Editors: Update this record