Study of the kinematic dependences of Λ0b production in pp collisions and a measurement of the Λ0 b → Λ+c π− branching fraction

Aaij, R. et al. (2014) Study of the kinematic dependences of Λ0b production in pp collisions and a measurement of the Λ0 b → Λ+c π− branching fraction. Journal of High Energy Physics, 2014, 143. (doi: 10.1007/JHEP08(2014)143)

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Abstract

The kinematic dependences of the relative production rates, fΛ0 b /fd, of Λ0 b baryons and B0 mesons are measured using Λ0 b → Λ + c π − and B 0 → D+π − decays. The measurements use proton-proton collision data, corresponding to an integrated luminosity of 1 fb−1 at a centre-of-mass energy of 7 TeV, recorded in the forward region with the LHCb experiment. The relative production rates are observed to depend on the transverse momentum, pT, and pseudorapidity, η, of the beauty hadron, in the studied kinematic region 1.5 < pT < 40 GeV/c and 2 < η < 5. Using a previous LHCb measurement of fΛ0 b /fd in semileptonic decays, the branching fraction B Λ 0 b → Λ + c π − = 4.30±0.03 +0.12 −0.11±0.26± 0.21 ×10−3 is obtained, where the first uncertainty is statistical, the second is systematic, the third is from the previous LHCb measurement of fΛ0 b /fd and the fourth is due to the B 0 → D+π − branching fraction. This is the most precise measurement of a Λ0 b branching fraction to date.

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 Rodrigues, Dr Eduardo and Eklund, Professor Lars
Authors: Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., Anderlini, L., Anderson, J., Andreassen, R., Andreotti, M., Andrews, J. E., Appleby, R. B., Aquines Gutierrez, O., Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Balagura, V., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Bauer, T., Bay, A., Beddow, J., Bedeschi, F., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P. M., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N. H., Brown, H., Bursche, A., Busetto, G., Buytaert, J., Cadeddu, S., Calabrese, R., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Campora Perez, D., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carranza-Mejia, H., Carson, L., Carvalho Akiba, K., Casse, G., Cassina, L., Castillo Garcia, L., Cattaneo, M., Cauet, C., Cenci, R., Charles, M., Charpentier, P., Cheung, S.-F., 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., Coquereau, S., Corti, G., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Cruz Torres, M., Cunliffe, S., Currie, R., D’Ambrosio, C., Dalseno, J., David, P., David, P. N. Y., Davis, A., De Bonis, I., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Di Canto, A., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Dorosz, P., Dosil Suárez, A., Dossett, D., Dovbnya, A., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., El Rifai, I., Elsasser, C., Esen, S., Falabella, A., Färber, C., Farinelli, C., Farry, S., Ferguson, D., Fernandez Albor, V., Ferreira Rodrigues, F., Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Gallas Torreira, A., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garofoli, J., Garra Tico, J., Garrido, L., Gaspar, C., Gauld, R., Gavardi, L., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, P., Gianelle, A., Giani’, S., Gibson, V., Giubega, L., 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., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Y., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Hafkenscheid, T. W., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hartmann, T., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Hernando Morata, J. A., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Hunt, P., Hussain, N., Hutchcroft, D., Hynds, D., Iakovenko, V., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jans, E., Jaton, P., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kaballo, M., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Kelsey, M., Kenyon, I. R., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., 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., Kucharczyk, M., Kudryavtsev, V., Kurek, K., 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., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J.-P., Lefèvre, R., Leflat, A., Lefrançois, J., Leo, S., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, G., Lohn, S., Longstaff, I., Lopes, J. H., Lopez-March, N., Lowdon, P., Lu, H., Lucchesi, D., Luisier, J., Luo, H., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Manca, G., Mancinelli, G., Manzali, M., Maratas, J., Marconi, U., Marino, P., Märki, R., Marks, J., Martellotti, G., Martens, A., Martín Sánchez, A., Martinelli, M., Martinez Santos, D., Martinez Vidal, F., Martins Tostes, D., Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M.-N., Molina Rodriguez, J., Monteil, S., Moran, D., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Mountain, R., Muheim, F., Müller, K., Muresan, R., Muryn, B., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Nicol, M., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, G., Orlandea, M., Otalora Goicochea, J. M., Owen, P., Oyanguren, A., Pal, B. K., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L., Parkes, C., Parkinson, C. J., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pearce, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perez Trigo, E., Perret, P., Perrin-Terrin, M., Pescatore, L., Pesen, E., Pessina, G., Petridis, K., Petrolini, A., Picatoste Olloqui, E., Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Plo Casasus, M., Polci, F., Polok, G., Poluektov, A., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Powell, A., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Puig Navarro, A., Punzi, G., Qian, W., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redford, S., Reichert, S., Reid, M. M., dos Reis, A. C., Ricciardi, S., Richards, A., Rinnert, K., Rives Molina, V., Roa Romero, D. A., Robbe, P., Roberts, D. A., Rodrigues, A. B., Rodrigues, E., Rodriguez Perez, P., Roiser, S., Romanovsky, V., Romero Vidal, A., Rotondo, M., Rouvinet, J., Ruf, T., Ruffini, F., Ruiz, H., Ruiz Valls, P., Sabatino, G., Saborido Silva, J. J., Sagidova, N., Sail, P., Saitta, B., Salustino Guimaraes, V., Sanmartin Sedes, B., Santacesaria, R., Santamarina Rios, C., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schiller, M., Schindler, H., 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., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Silva Coutinho, R., Simi, G., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, N. A., Smith, E., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F.J.P., Soomro, F., Souza, D., Souza De Paula, B., Spaan, B., Sparkes, A., Spinella, F., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Subbiah, V. K., Sun, L., Sutcliffe, W., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szilard, D., Szumlak, T., T’Jampens, S., Teklishyn, M., Tellarini, G., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Tran, M. T., Tresch, M., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ubeda Garcia, M., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vagnoni, V., Valenti, G., Vallier, A., Vazquez Gomez, R., Vazquez Regueiro, P., Vázquez Sierra, C., Vecchi, S., Velthuis, J. 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College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of High Energy Physics
Journal Abbr.:J. High Energy Phys.
Publisher:Springer
ISSN:1029-8479
ISSN (Online):1029-8479
Copyright Holders:Copyright © 2014 CERN, for the LHCb Collaboration
First Published:First published in Journal of High Energy Physics 2014:143
Publisher Policy:Reproduced under a Creative Commons License

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