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Precision luminosity measurements at LHCb

Measuring cross-sections at the LHC requires the luminosity to be determined accurately at each centre-of-mass energy $\sqrt{s}$. In this paper results are reported from the luminosity calibrations carried out at the LHC interaction point 8 with the LHCb detector for $\sqrt{s}$ = 2.76, 7 and 8 TeV (...

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Detalles Bibliográficos
Autores principales: Aaij, Roel, Adeva, Bernardo, Adinolfi, Marco, Affolder, Anthony, Ajaltouni, Ziad, Akar, Simon, Albrecht, Johannes, Alessio, Federico, Alexander, Michael, Ali, Suvayu, Alkhazov, Georgy, Alvarez Cartelle, Paula, Alves Jr, Antonio Augusto, Amato, Sandra, Amerio, Silvia, Amhis, Yasmine, An, Liupan, Anderlini, Lucio, Anderson, Jonathan, Andreassen, Rolf, Andreotti, Mirco, Andrews, Jason, Appleby, Robert, Aquines Gutierrez, Osvaldo, Archilli, Flavio, Artamonov, Alexander, Artuso, Marina, Aslanides, Elie, Auriemma, Giulio, Baalouch, Marouen, Bachmann, Sebastian, Back, John, Badalov, Alexey, Baesso, Clarissa, Baldini, Wander, Barlow, Roger, Barschel, Colin, Barsuk, Sergey, Barter, William, Batozskaya, Varvara, Battista, Vincenzo, Bay, Aurelio, Beaucourt, Leo, Beddow, John, Bedeschi, Franco, Bediaga, Ignacio, Belogurov, Sergey, Belous, Konstantin, Belyaev, Ivan, Ben-Haim, Eli, Bencivenni, Giovanni, Benson, Sean, Benton, Jack, Berezhnoy, Alexander, Bernet, Roland, Bettler, Marc-Olivier, van Beuzekom, Martinus, Bien, Alexander, Bifani, Simone, Bird, Thomas, Bizzeti, Andrea, Bjørnstad, Pål Marius, Blake, Thomas, Blanc, Frédéric, Blouw, Johan, Blusk, Steven, Bocci, Valerio, Bondar, Alexander, Bondar, Nikolay, Bonivento, Walter, Borghi, Silvia, Borgia, Alessandra, Borsato, Martino, Bowcock, Themistocles, Bowen, Espen Eie, Bozzi, Concezio, Brambach, Tobias, Bressieux, Joël, Brett, David, Britsch, Markward, Britton, Thomas, Brodzicka, Jolanta, Brook, Nicholas, Brown, Henry, Bursche, Albert, Buytaert, Jan, Cadeddu, Sandro, Calabrese, Roberto, Calvi, Marta, Calvo Gomez, Miriam, Campana, Pierluigi, Campora Perez, Daniel, Carbone, Angelo, Carboni, Giovanni, Cardinale, Roberta, Cardini, Alessandro, Carson, Laurence, Carvalho Akiba, Kazuyoshi, Casse, Gianluigi, Cassina, Lorenzo, Castillo Garcia, Lucia, Cattaneo, Marco, Cauet, Christophe, Cenci, Riccardo, Charles, Matthew, Charpentier, Philippe, Chefdeville, Maximilien, Chen, Shanzhen, Cheung, Shu-Faye, Chiapolini, Nicola, Chrzaszcz, Marcin, Ciba, Krzystof, Cid Vidal, Xabier, Ciezarek, Gregory, Clarke, Peter, Clemencic, Marco, Cliff, Harry, Closier, Joel, Coco, Victor, Cogan, Julien, Cogneras, Eric, Cojocariu, Lucian, Collazuol, Gianmaria, Collins, Paula, Comerma-Montells, Albert, Contu, Andrea, Cook, Andrew, Coombes, Matthew, Coquereau, Samuel, Corti, Gloria, Corvo, Marco, Counts, Ian, Couturier, Benjamin, Cowan, Greig, Craik, Daniel Charles, Cruz Torres, Melissa Maria, Cunliffe, Samuel, Currie, Robert, D'Ambrosio, Carmelo, Dalseno, Jeremy, David, Pascal, David, Pieter, Davis, Adam, De Bruyn, Kristof, De Capua, Stefano, De Cian, Michel, De Miranda, Jussara, De Paula, Leandro, De Silva, Weeraddana, De Simone, Patrizia, Dean, Cameron Thomas, Decamp, Daniel, Deckenhoff, Mirko, Del Buono, Luigi, Déléage, Nicolas, Derkach, Denis, Deschamps, Olivier, Dettori, Francesco, Di Canto, Angelo, Dijkstra, Hans, Donleavy, Stephanie, Dordei, Francesca, Dorigo, Mirco, Dosil Suárez, Alvaro, Dossett, David, Dovbnya, Anatoliy, Dreimanis, Karlis, Dujany, Giulio, Dupertuis, Frederic, Durante, Paolo, Dzhelyadin, Rustem, Dziurda, Agnieszka, Dzyuba, Alexey, Easo, Sajan, Egede, Ulrik, Egorychev, Victor, Eidelman, Semen, Eisenhardt, Stephan, Eitschberger, Ulrich, Ekelhof, Robert, Eklund, Lars, El Rifai, Ibrahim, Elsasser, Christian, Ely, Scott, Esen, Sevda, Evans, Hannah Mary, Evans, Timothy, Falabella, Antonio, Färber, Christian, Farinelli, Chiara, Farley, Nathanael, Farry, Stephen, Fay, Robert, Ferguson, Dianne, Fernandez Albor, Victor, Ferreira Rodrigues, Fernando, Ferro-Luzzi, Massimiliano, Filippov, Sergey, Fiore, Marco, Fiorini, Massimiliano, Firlej, Miroslaw, Fitzpatrick, Conor, Fiutowski, Tomasz, Fol, Philip, Fontana, Marianna, Fontanelli, Flavio, Forty, Roger, Francisco, Oscar, Frank, Markus, Frei, Christoph, Frosini, Maddalena, Fu, Jinlin, Furfaro, Emiliano, Gallas Torreira, Abraham, Galli, Domenico, Gallorini, Stefano, Gambetta, Silvia, Gandelman, Miriam, Gandini, Paolo, Gao, Yuanning, García Pardiñas, Julián, Garofoli, Justin, Garra Tico, Jordi, Garrido, Lluis, Gascon, David, Gaspar, Clara, Gauld, Rhorry, Gavardi, Laura, Geraci, Angelo, Gersabeck, Evelina, Gersabeck, Marco, Gershon, Timothy, Ghez, Philippe, Gianelle, Alessio, Gianì, Sebastiana, Gibson, Valerie, Giubega, Lavinia-Helena, Gligorov, V.V., Göbel, Carla, Golubkov, Dmitry, Golutvin, Andrey, Gomes, Alvaro, Gotti, Claudio, Grabalosa Gándara, Marc, Graciani Diaz, Ricardo, Granado Cardoso, Luis Alberto, Graugés, Eugeni, Graziani, Giacomo, Grecu, Alexandru, Greening, Edward, Gregson, Sam, Griffith, Peter, Grillo, Lucia, Grünberg, Oliver, Gui, Bin, Gushchin, Evgeny, Guz, Yury, Gys, Thierry, Hadjivasiliou, Christos, Haefeli, Guido, Haen, Christophe, Haines, Susan, Hall, Samuel, Hamilton, Brian, Hampson, Thomas, Han, Xiaoxue, Hansmann-Menzemer, Stephanie, Harnew, Neville, Harnew, Samuel, Harrison, Jonathan, He, Jibo, Head, Timothy, Heijne, Veerle, Hennessy, Karol, Henrard, Pierre, Henry, Louis, Hernando Morata, Jose Angel, van Herwijnen, Eric, Heß, Miriam, Hicheur, Adlène, Hill, Donal, Hoballah, Mostafa, Hombach, Christoph, Hulsbergen, Wouter, Hunt, Philip, Hussain, Nazim, Hutchcroft, David, Hynds, Daniel, Idzik, Marek, Ilten, Philip, Jacobsson, Richard, Jaeger, Andreas, Jalocha, Pawel, Jans, Eddy, Jaton, Pierre, Jawahery, Abolhassan, Jing, Fanfan, John, Malcolm, Johnson, Daniel, Jones, Christopher, Joram, Christian, Jost, Beat, Jurik, Nathan, Kandybei, Sergii, Kanso, Walaa, Karacson, Matthias, Karbach, Moritz, Karodia, Sarah, Kelsey, Matthew, Kenyon, Ian, Ketel, Tjeerd, Khanji, Basem, Khurewathanakul, Chitsanu, Klaver, Suzanne, Klimaszewski, Konrad, Kochebina, Olga, Kolpin, Michael, Komarov, Ilya, Koopman, Rose, Koppenburg, Patrick, Korolev, Mikhail, Kozlinskiy, Alexandr, Kravchuk, Leonid, Kreplin, Katharina, Kreps, Michal, Krocker, Georg, Krokovny, Pavel, Kruse, Florian, Kucewicz, Wojciech, Kucharczyk, Marcin, Kudryavtsev, Vasily, Kurek, Krzysztof, Kvaratskheliya, Tengiz, La Thi, Viet Nga, 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Achim, Volyanskyy, Dmytro, Voong, David, Vorobyev, Alexey, Vorobyev, Vitaly, Voß, Christian, de Vries, Jacco, Waldi, Roland, Wallace, Charlotte, Wallace, Ronan, Walsh, John, Wandernoth, Sebastian, Wang, Jianchun, Ward, David, Watson, Nigel, Websdale, David, Whitehead, Mark, Wicht, Jean, Wiedner, Dirk, Wilkinson, Guy, Williams, Matthew, Williams, Mike, Wilschut, Hans, Wilson, Fergus, Wimberley, Jack, Wishahi, Julian, Wislicki, Wojciech, Witek, Mariusz, Wormser, Guy, Wotton, Stephen, Wright, Simon, Wyllie, Kenneth, Xie, Yuehong, Xing, Zhou, Xu, Zhirui, Yang, Zhenwei, Yuan, Xuhao, Yushchenko, Oleg, Zangoli, Maria, Zavertyaev, Mikhail, Zhang, Liming, Zhang, Wen Chao, Zhang, Yanxi, Zhelezov, Alexey, Zhokhov, Anatoly, Zhong, Liang, Zvyagin, Alexander
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/9/12/P12005
http://cds.cern.ch/record/1951625
Descripción
Sumario:Measuring cross-sections at the LHC requires the luminosity to be determined accurately at each centre-of-mass energy $\sqrt{s}$. In this paper results are reported from the luminosity calibrations carried out at the LHC interaction point 8 with the LHCb detector for $\sqrt{s}$ = 2.76, 7 and 8 TeV (proton-proton collisions) and for $\sqrt{s_{NN}}$ = 5 TeV (proton-lead collisions). Both the "van der Meer scan" and "beam-gas imaging" luminosity calibration methods were employed. It is observed that the beam density profile cannot always be described by a function that is factorizable in the two transverse coordinates. The introduction of a two-dimensional description of the beams improves significantly the consistency of the results. For proton-proton interactions at $\sqrt{s}$ = 8 TeV a relative precision of the luminosity calibration of 1.47% is obtained using van der Meer scans and 1.43% using beam-gas imaging, resulting in a combined precision of 1.12%. Applying the calibration to the full data set determines the luminosity with a precision of 1.16%. This represents the most precise luminosity measurement achieved so far at a bunched-beam hadron collider.