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Measurement of the electron reconstruction efficiency at LHCb
| File | Description | Size | Format | |
|---|---|---|---|---|
 Aaij_2019_J._Inst._14_P11023.pdf | Published version | 999.17 kB | Adobe PDF | View/Open |
| Title: | Measurement of the electron reconstruction efficiency at LHCb |
| Authors: | Aaij, R Beteta, CA Ackernley, T Adeva, B Adinolfi, M Afsharnia, H Aidala, CA Aiola, S Ajaltouni, Z Akar, S Albicocco, P Albrecht, J Alessio, F Alexander, M Albero, AA Alkhazov, G Cartelle, PA Alves Jr, AA Amato, S Amhis, Y An, L Anderlini, L Andreassi, G Andreotti, M Archilli, F Romeu, JA Artamonov, A Artuso, M Arzymatov, K Aslanides, E Atzeni, M Audurier, B Bachmann, S Back, JJ Baker, S Balagura, V Baldini, W Baranov, A Barlow, RJ Barsuk, S Barter, W Bartolini, M Baryshnikov, F Bassi, G Batozskaya, V Batsukh, B Battig, A Battista, V Bay, A Becker, M Bedeschi, F Bediaga, I Beiter, A Bel, LJ Belavin, V Belin, S Beliy, N Bellee, V Belous, K Belyaev, I Bencivenni, G Ben-Haim, E Benson, S Beranek, S Berezhnoy, A Bernet, R Berninghoff, D Bernstein, HC Bertholet, E Bertolin, A Betancourt, C Betti, F Bettler, MO Bezshyiko, I Bhasin, S Bhom, J Bieker, MS Bifani, S Billoir, P Birnkraut, A Bizzeti, A Bjrn, M Blago, MP Blake, T Blanc, F Blusk, S Bobulska, D Bocci, V Boente Garcia, O Boettcher, T Boldyrev, A Bondar, A Bondar, N Borghi, S Borisyak, M Borsato, M Borsuk, JT Boubdir, M Bowcock, TJ Bozzi, C Braun, S Brea Rodriguez, A Brodski, M Brodzicka, J Gonzalo, AB Brundu, D Buchanan, E Buonaura, A Burr, C Bursche, A Butter, JS Buytaert, J Byczynski, W Cadeddu, S Cai, H Calabrese, R Cali, S Calladine, R Calvi, M Gomez, MC Camboni, A Campana, P Perez, DHC Capriotti, L Carbone, A Carboni, G Cardinale, R Cardini, A Carniti, P Akiba, KC Casais Vidal, A Casse, G Cattaneo, M Cavallero, G Cenci, R Cerasoli, J Chapman, MG Charles, M Charpentier, P Chatzikonstantinidis, G Chefdeville, M Chekalina, V Chen, C Chen, S Chernov, A Chitic, S-G Chobanova, V Chrzaszcz, M Chubykin, A Ciambrone, P Cicala, MF Cid Vidal, X Ciezarek, G Cindolo, F Clarke, PEL Clemencic, M Cliff, H Closier, J Cobbledick, JL Coco, V Coelho, JAB Cogan, J Cogneras, E Cojocariu, L Collins, P Colombo, T Comerma-Montells, A Contu, A Cooke, N Coombs, G Coquereau, S Corti, G Sobral, CMC Couturier, B Cowan, GA Craik, DC Crocombe, A Cruz Torres, M Currie, R Da Silva, CL Dall'Occo, E Dalseno, J D'Ambrosio, C Danilina, A D'Argent, P Davis, A Francisco, ODA De Bruyn, K De Capua, S De Cian, M De Miranda, JM De Paula, L De Serio, M De Simone, P De Vries, JA Dean, CT Dean, W Decamp, D Del Buono, L Delaney, B Dembinski, H-P Demmer, M Dendek, A Denysenko, V Derkach, D Deschamps, O Desse, F Dettori, F Dey, B Di Canto, A Di Nezza, P Didenko, S Dijkstra, H Dordei, F Dorigo, M Dos Reis, AC Dosil Suarez, A Douglas, L Dovbnya, A Dreimanis, K Dudek, MW Dufour, L Dujany, G Durante, P Durham, JM Dutta, D Dzhelyadin, R Dziewiecki, M Dziurda, A Dzyuba, A Easo, S Egede, U Egorychev, V Eidelman, S Eisenhardt, S Ekelhof, R Ek-In, S Eklund, L Ely, S Ene, A Escher, S Esen, S Evans, T Falabella, A Fan, J Farley, N Farry, S Fazzini, D Fo, M Declara, PF Fernandez Prieto, A Ferrari, F Lopes, LF Ferreira Rodrigues, F Sole, SF Ferro-Luzzi, M Filippov, S Fini, RA Fiorini, M Firlej, M Fischer, KM Fitzpatrick, C Fiutowski, T Fleuret, F Fontana, M Fontanelli, F Forty, R Lima, VF Sevilla, MF Frank, M Frei, C Friday, DA Fu, J Funk, W Gabriel, E Gallas Torreira, A Galli, D Gallorini, S Gambetta, S Gan, Y Gandelman, M Gandini, P Gao, Y Garcia Martin, LM Pardinas, JG Garcia Plana, B Rosales, FAG Tico, JG Garrido, L Gascon, D Gaspar, C Gazzoni, G Gerick, D Gersabeck, E Gersabeck, M Gershon, T Gerstel, D Ghez, P Gibson, V Gioventu, A Girard, OG Gironell, PG Giubega, L Giugliano, C Gizdov, K Gligorov, VV Gobel, C Golubkov, D Golutvin, A Gomes, A Gorelov, I Gotti, C Govorkova, E Grabowski, JP Diaz, RG Grammatico, T Cardoso, LAG Grauges, E Graverini, E Graziani, G Grecu, A Greim, R Griffith, P Grillo, L Gruber, L Cazon, BRG Gu, C Gushchin, E Guth, A Guz, Y Gys, T Hadavizadeh, T Hadjivasiliou, C Haefeli, G Haen, C Haines, SC Hamilton, PM Han, Q Han, X Hancock, TH Hansmann-Menzemer, S Harnew, N Harrison, T Hart, R Hasse, C Hatch, M He, J Hecker, M Heijhoff, K Heinicke, K Heister, A Hennequin, AM Hennessy, K Henry, L Hess, M Heuel, J Hicheur, A Charman, RH Hill, D Hilton, M Hopchev, PH Hu, J Hu, W Huang, W Huard, ZC Hulsbergen, W Humair, T Hunter, RJ Hushchyn, M Hutchcroft, D Hynds, D Ibis, P Idzik, M Ilten, P Inglessi, A Inyakin, A Ivshin, K Jacobsson, R Jakobsen, S Jalocha, J Jans, E Jashal, BK Jawahery, A Jevtic, V Jiang, F John, M Johnson, D Jones, CR Jost, B Jurik, N Kandybei, S Karacson, M Kariuki, JM Karodia, S Kazeev, N Kecke, M Keizer, F Kelsey, M Kenzie, M Ketel, T Khanji, B Kharisova, A Khurewathanakul, C Kim, KE Kirn, T Kirsebom, VS Klaver, S Klimaszewski, K Koliiev, S Kondybayeva, A Konoplyannikov, A Kopciewicz, P Kopecna, R Koppenburg, P Kostiuk, I Kot, O Kotriakhova, S Kozeiha, M Kravchuk, L Krawczyk, RD Kreps, M Kress, F Kretzschmar, S Krokovny, P Krupa, W Krzemien, W Kucewicz, W Kucharczyk, M Kudryavtsev, V Kuindersma, HS Kunde, GJ Kuonen, AK Kvaratskheliya, T Lacarrere, D Lafferty, G Lai, A Lancierini, D Lane, JJ Lanfranchi, G Langenbruch, C Latham, T Lazzari, F Lazzeroni, C Le Gac, R Lefevre, R Leflat, A Lemaitre, F Leroy, O Lesiak, T Leverington, B Li, H Li, P-R Li, X Li, Y Li, Z Liang, X Lindner, R Lionetto, F Lisovskyi, V Liu, G Liu, X Loh, D Loi, A Lomba Castro, J Longstaff, I Lopes, JH Loustau, G Lovell, GH Lucchesi, D Martinez, ML Luo, Y Lupato, A Luppi, E Lupton, O Lusiani, A Lyu, X Maccolini, S Machefert, F Maciuc, F Macko, V Mackowiak, P Maddrell-Mander, S Mohan, LRM Maev, O Maevskiy, A Maguire, K Maisuzenko, D Majewski, MW Malde, S Malecki, B Malinin, A Maltsev, T Malygina, H Manca, G Mancinelli, G Escalero, RM Manuzzi, D Marangotto, D Maratas, J Marchand, JF Marconi, U Mariani, S Benito, CM Marinangeli, M Marino, P Marks, J Marshall, PJ Martellotti, G Martinazzoli, L Martinelli, M Martinez Santos, D Martinez Vidal, F Massafferri, A Materok, M Matev, R Mathad, A Mathe, Z Matiunin, V Matteuzzi, C Mattioli, KR Mauri, A Maurice, E McCann, M Mcconnell, L McNab, A McNulty, R Mead, J Meadows, B Meaux, C Meinert, N Melnychuk, D Meloni, S Merk, M Merli, A Michielin, E Milanes, DA Millard, E Minard, M-N Mineev, O Minzoni, L Mitchell, SE Mitreska, B Mitzel, DS Moedden, A Mogini, A Moise, RD Mombaecher, T Monroy, IA Monteil, S Morandin, M Morello, G Morello, MJ Moron, J Morris, AB Morris, AG Mountain, R Mu, H Muheim, F Mukherjee, M Mulder, M Mueller, D Mueller, J Mueller, K Mueller, V Murphy, CH Murray, D Muzzetto, P Naik, P Nakada, T Nandakumar, R Nandi, A Nanut, T Nasteva, I Needham, M Neri, N Neubert, S Neufeld, N Newcombe, R Nguyen, TD Nguyen-Mau, C Niel, EM Nieswand, S Nikitin, N Nolte, NS Oblakowska-Mucha, A Obraztsov, V Ogilvy, S O'Hanlon, DP Oldeman, R Onderwater, CJG Osborn, JD Ossowska, A Otalora Goicochea, JM Ovsiannikova, T Owen, P Oyanguren, A Pais, PR Pajero, T Palano, A Palutan, M Panshin, G Papanestis, A Pappagallo, M Pappalardo, LL Parker, W Parkes, C Passaleva, G Pastore, A Patel, M Patrignani, C Pearce, A Pellegrino, A Penso, G Altarelli, MP Perazzini, S Pereima, D Perret, P Pescatore, L Petridis, K Petrolini, A Petrov, A Petrucci, S Petruzzo, M Pietrzyk, B Pietrzyk, G Pikies, M Pili, M Pinci, D Pinzino, J Pisani, F Piucci, A Placinta, V Playfer, S Plews, J Plo Casasus, M Polci, F Lener, MP Poliakova, M Poluektov, A Polukhina, N Polyakov, I Polycarpo, E Pomery, GJ Ponce, S Popov, A Popov, D Poslavskii, S Prasanth, K Promberger, L Prouve, C Pugatch, V Navarro, AP Pullen, H Punzi, G Qian, W Qin, J Quagliani, R Quintana, B Raab, N Rachwal, B Rademacker, JH Rama, M Ramos Pernas, M Rangel, MS Ratnikov, F Raven, G Salzgeber, MR Reboud, M Redi, F Reichert, S Reiss, F Remon Alepuz, C Ren, Z Renaudin, V Ricciardi, S Richards, S Rinnert, K Robbe, P Robert, A Rodrigues, AB Rodrigues, E Rodriguez Lopez, JA Roehrken, M Roiser, S Rollings, A Romanovskiy, V Romero Lamas, M Romero Vidal, A Roth, JD Rotondo, M Rudolph, MS Ruf, T Ruiz Vidal, J Ryzka, J Saborido Silva, JJ Sagidova, N Saitta, B Gras, CS Sanchez Mayordomo, C Sanmartin Sedes, B Santacesaria, R Santamarina Rios, C Santimaria, M Santovetti, E Sarpis, G Sarti, A Satriano, C Satta, A Saur, M Savrina, D Smead, LGS Schael, S Schellenberg, M Schiller, M Schindler, H Schmelling, M Schmelzer, T Schmidt, B Schneider, O Schopper, A Schreiner, HF Schubiger, M Schulte, S Schune, MH Schwemmer, R Sciascia, B Sciubba, A Sellam, S Semennikov, A Sergi, A Serra, N Serrano, J Sestini, L Seuthe, A Seyfert, P Shangase, DM Shapkin, M Shears, T Shekhtman, L Shevchenko, V Shmanin, E Shupperd, JD Siddi, BG Coutinho, RS Silva de Oliveira, L Simi, G Simone, S Skiba, I Skidmore, N Skwarnicki, T Slater, MW Smeaton, JG Smith, E Smith, IT Smith, M Soares, M Soares Lavra, L Sokoloff, MD Soler, FJP Souza De Paula, B Spaan, B Norella, ES Spradlin, P Stagni, F Stahl, M Stahl, S Stefko, P Stefkova, S Steinkamp, O Stemmle, S Stenyakin, O Stepanova, M Stevens, H Stocchi, A Stone, S Stracka, S Stramaglia, ME Straticiuc, M Straumann, U Strokov, S Sun, J Sun, L Sun, Y Svihra, P Swientek, K Szabelski, A Szumlak, T Szymanski, M Taneja, S Tang, Z Tekampe, T Tellarini, G Teubert, F Thomas, E Thomson, KA Tilley, MJ Tisserand, V TJampens, S Tobin, M Tolk, S Tomassetti, L Tonelli, D Tou, DY Tournefier, E Traill, M Tran, MT Trisovic, A Tsaregorodtsev, A Tuci, G Tully, A Tuning, N Ukleja, A Usachov, A Ustyuzhanin, A Uwer, U Vagner, A Vagnoni, V Valassi, A Valat, S Valenti, G Van Beuzekom, M Van Hecke, H Van Herwijnen, E Van Hulse, CB Van Tilburg, J Van Veghel, M Gomez, RV Vazquez Regueiro, P Sierra, CV Vecchi, S Velthuis, JJ Veltri, M Venkateswaran, A Vernet, M Veronesi, M Vesterinen, M Barbosa, JVV Vieira, D Diaz, MV Viemann, H Vilasis-Cardona, X Vitkovskiy, A Volkov, V Vollhardt, A Vom Bruch, D Voneki, B Vorobyev, A Vorobyev, V Voropaev, N Waldi, R Walsh, J Wang, J Wang, M Wang, Y Wang, Z Ward, DR Wark, HM Watson, NK Websdale, D Weiden, A Weisser, C Westhenry, BDC White, DJ Whitehead, M Wiedner, D Wilkinson, G Wilkinson, M Williams, I Williams, M Williams, MRJ Williams, T Wilson, FF Winn, M Wislicki, W Witek, M Wormser, G Wotton, SA Wu, H Wyllie, K Xiang, Z Xiao, D Xie, Y Xing, H Xu, A Xu, L Xu, M Xu, Q Xu, Z Yang, Z Yao, Y Yeomans, LE Yin, H Yu, J Yuan, X Yushchenko, O Zarebski, KA Zavertyaev, M Zdybal, M Zeng, M Zhang, D Zhang, L Zhang, S Zhang, WC Zhang, Y Zhelezov, A Zheng, Y Zhou, X Zhou, Y Zhu, X Zhukov, V Zonneveld, JB Zucchelli, S |
| Item Type: | Journal Article |
| Abstract: | The single electron track-reconstruction efficiency is calibrated using a sample corresponding to 1.3 fb−1 of pp collision data recorded with the LHCb detector in 2017. This measurement exploits B+→ J/ψ(e+e−)K+ decays, where one of the electrons is fully reconstructed and paired with the kaon, while the other electron is reconstructed using only the information of the vertex detector. Despite this partial reconstruction, kinematic and geometric constraints allow the B meson mass to be reconstructed and the signal to be well separated from backgrounds. This in turn allows the electron reconstruction efficiency to be measured by matching the partial track segment found in the vertex detector to tracks found by LHCb's regular reconstruction algorithms. The agreement between data and simulation is evaluated, and corrections are derived for simulated electrons in bins of kinematics. These correction factors allow LHCb to measure branching fractions involving single electrons with a systematic uncertainty below 1%. |
| Issue Date: | 22-Nov-2019 |
| Date of Acceptance: | 30-Oct-2019 |
| URI: | http://hdl.handle.net/10044/1/79903 |
| DOI: | 10.1088/1748-0221/14/11/P11023 |
| ISSN: | 1748-0221 |
| Publisher: | IOP Publishing |
| Start Page: | 1 |
| End Page: | 20 |
| Journal / Book Title: | Journal of Instrumentation |
| Volume: | 14 |
| Copyright Statement: | © 2019 CERN for the benefit of the LHCb collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (http://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| Keywords: | Science & Technology Technology Instruments & Instrumentation Pattern recognition, cluster finding, calibration and fitting methods Performance of High Energy Physics Detectors DECAY Science & Technology Technology Instruments & Instrumentation Pattern recognition, cluster finding, calibration and fitting methods Performance of High Energy Physics Detectors DECAY hep-ex hep-ex 02 Physical Sciences 09 Engineering Nuclear & Particles Physics |
| Publication Status: | Published |
| Open Access location: | https://iopscience.iop.org/article/10.1088/1748-0221/14/11/P11023 |
| Article Number: | ARTN P11023 |
| Online Publication Date: | 2019-11-22 |
| Appears in Collections: | Physics High Energy Physics |