Absolute luminosity measurements with the LHCb detector at the LHC

Aaij, R. et al. (2012) Absolute luminosity measurements with the LHCb detector at the LHC. Journal of Instrumentation, 7, P01010. (doi: 10.1088/1748-0221/7/01/P01010)

Abstract

Absolute luminosity measurements are of general interest for colliding-beam experiments at storage rings. These measurements are necessary to determine the absolute cross-sections of reaction processes and are valuable to quantify the performance of the accelerator. Using data taken in 2010, LHCb has applied two methods to determine the absolute scale of its luminosity measurements for proton-proton collisions at the LHC with a centre-of-mass energy of 7 TeV. In addition to the classic ``van der Meer scan'' method a novel technique has been developed which makes use of direct imaging of the individual beams using beam-gas and beam-beam interactions. This beam imaging method is made possible by the high resolution of the LHCb vertex detector and the close proximity of the detector to the beams, and allows beam parameters such as positions, angles and widths to be determined. The results of the two methods have comparable precision and are in good agreement. Combining the two methods, an overal precision of 3.5% in the absolute luminosity determination is reached. The techniques used to transport the absolute luminosity calibration to the full 2010 data-taking period are presented.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Pappagallo, Dr Marco and Alexander, Dr Michael and Spradlin, Dr Patrick and MacRaighne, Dr Aaron and Rodrigues, Dr Eduardo and Bates, Mrs Alison and Soler, Professor Paul and Borghi, Dr Silvia and Eklund, Prof Lars
• Authors: Aaij, 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., Amato, S., Amhis, Y., Anderlini, L., Anderson, J., Appleby, R.B., Aquines Gutierrez, O., Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J.J., Baesso, C., Baldini, W., Barlow, R.J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, T., 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., 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., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N.H., Brown, H., Büchler-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., Carranza-Mejia, H., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, C., Charles, M., Charpentier, P., 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., Cunliffe, S., Currie, R., DʼAmbrosio, 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., Di Canto, A., Dickens, J., Dijkstra, H., Diniz Batista, P., Dogaru, M., Domingo Bonal, F., Donleavy, S., Dordei, F., Dosil Suárez, A., Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisenhardt, S., Ekelhof, R., Eklund, L., El Rifai, I., Elsasser, C., Elsby, D., Falabella, A., Färber, 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., Garosi, P., Garra Tico, J., Garrido, L., Gaspar, C., Gauld, R., Gersabeck, E., 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., Greening, E., Gregson, S., Grünberg, O., Gui, B., Gushchin, E., Guz, Y., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S.C., Hall, S., 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., 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., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T.M., Kenyon, I.R., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y.M., Kochebina, O., Komarov, V., 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., 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., Leroy, O., Lesiak, T., Li, Y., Li Gioi, L., 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., Luo, H., Mac Raighne, A., Machefert, F., Machikhiliyan, I.V., Maciuc, F., Maev, O., Magnin, J., Maino, M., Malde, S., Manca, G., Mancinelli, G., Mangiafave, N., Marconi, U., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martín Sánchez, A., Martinelli, M., Martinez Santos, D., Martins Tostes, D., Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., 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., Müller, 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, T.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., 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., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Pérez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petridis, K., Petrolini, A., Phan, A., Picatoste Olloqui, E., Pie Valls, B., Pietrzyk, B., Pilař, T., Pinci, D., 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., Rauschmayr, N., Raven, G., Redford, S., Reid, M.M., dos Reis, A.C., Ricciardi, S., Richards, A., Rinnert, K., Rives Molina, V., Roa Romero, D.A., Robbe, P., Rodrigues, E., Rodriguez Perez, P., Rogers, G.J., Roiser, S., Romanovsky, V., Romero Vidal, A., 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., 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., 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., TʼJampens, S., Teklishyn, M., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Tran, M.T., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ubeda Garcia, M., Ukleja, A., Urner, D., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J.J., Veltri, M., Veneziano, G., 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., and Zvyagin, A.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Journal of Instrumentation
• Publisher: Institute of Physics Publishing Ltd.
• ISSN: 1748-0221
• Copyright Holders: Copyright © 2012 CERN for the benefit of the LHCb collaboration
• First Published: First published in Journal of Instrumentation 7:P01010
• Publisher Policy: Reproduced under a Creative Commons License