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Abstract
The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B+→J/ψK+, B0→J/ψK∗0 and B0→D∗−μ+νμ decay modes with 0.37 fb−1 of data collected in pp collisions at \(\sqrt{s} = 7\mbox{~TeV}\) during the 2011 physics run. The opposite-side tagging power is determined in the B+→J/ψK+ channel to be (2.10±0.08±0.24) %, where the first uncertainty is statistical and the second is systematic.
Details
Title
Opposite-side flavour tagging of B mesons at the LHCb experiment
Author
Aaij, R 1 ; C Abellan Beteta 2 ; Adeva, B 3 ; Adinolfi, M 4 ; Adrover, C 5 ; Affolder, A 6 ; Ajaltouni, Z 7 ; Albrecht, J 8 ; Alessio, F 8 ; Alexander, M 9 ; Alkhazov, G 10 ; P Alvarez Cartelle 3 ; Alves, A A, Jr 11 ; Amato, S 12 ; Amhis, Y 13 ; Anderson, J 14 ; Appleby, R B 15 ; Gutierrez, O Aquines 16 ; Archilli, F 17 ; Arrabito, L 18 ; Artamonov, A 19 ; Artuso, M 20 ; Aslanides, E 5 ; Auriemma, G 11 ; Bachmann, S 21 ; Back, J J 22 ; Bailey, D S 15 ; Balagura, V 23 ; Baldini, W 24 ; Barlow, R J 15 ; Barschel, C 8 ; Barsuk, S 25 ; Barter, W 26 ; Bates, A 9 ; Bauer, C 16 ; Bauer, Th 1 ; Bay, A 13 ; Bediaga, I 27 ; Belogurov, S 28 ; Belous, K 19 ; Belyaev, I 28 ; Ben-Haim, E 29 ; Benayoun, M 29 ; Bencivenni, G 30 ; Benson, S 31 ; Benton, J 4 ; Bernet, R 14 ; M-O Bettler 32 ; M van Beuzekom 1 ; Bien, A 21 ; Bifani, S 33 ; Bird, T 15 ; Bizzeti, A 32 ; Bjørnstad, P M 15 ; Blake, T 8 ; Blanc, F 13 ; Blanks, C 34 ; Blouw, J 21 ; Blusk, S 35 ; Bobrov, A 36 ; Bocci, V 11 ; Bondar, A 36 ; Bondar, N 10 ; 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1 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
2 Universitat de Barcelona, Barcelona, Spain
3 Universidad de Santiago de Compostela, Santiago de Compostela, Spain
4 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
5 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
6 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
7 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
8 European Organization for Nuclear Research (CERN), Geneva, Switzerland
9 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
10 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
11 Sezione INFN di Roma La Sapienza, Roma, Italy
12 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
13 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
14 Physik-Institut, Universität Zürich, Zürich, Switzerland
15 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
16 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
17 Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
18 CC-IN2P3, CNRS/IN2P3, Lyon-Villeurbanne, France
19 Institute for High Energy Physics (IHEP), Protvino, Russia
20 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Syracuse University, Syracuse, NY, United States
21 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
22 Department of Physics, University of Warwick, Coventry, United Kingdom
23 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
24 Sezione INFN di Ferrara, Ferrara, Italy
25 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
26 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
27 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
28 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
29 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
30 Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
31 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
32 Sezione INFN di Firenze, Firenze, Italy
33 School of Physics, University College Dublin, Dublin, Ireland
34 Imperial College London, London, United Kingdom
35 Syracuse University, Syracuse, NY, United States
36 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
37 Sezione INFN di Cagliari, Cagliari, Italy
38 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom; School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
39 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
40 Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
41 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
42 Sezione INFN di Milano Bicocca, Milano, Italy
43 Sezione INFN di Bologna, Bologna, Italy
44 Sezione INFN di Roma Tor Vergata, Roma, Italy
45 Sezione INFN di Genova, Genova, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
46 Department of Physics, University of Oxford, Oxford, United Kingdom
47 European Organization for Nuclear Research (CERN), Geneva, Switzerland; School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
48 LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
49 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
50 Sezione INFN di Bologna, Bologna, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
51 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
52 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
53 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
54 University of Birmingham, Birmingham, United Kingdom
55 Sezione INFN di Bologna, Bologna, Italy; Sezione INFN di Ferrara, Ferrara, Italy
56 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
57 Sezione INFN di Genova, Genova, Italy
58 Center for High Energy Physics, Tsinghua University, Beijing, China
59 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Department of Physics, University of Warwick, Coventry, United Kingdom
60 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
61 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland; Imperial College London, London, United Kingdom
62 Physikalisches Institut, Universität Rostock, Rostock, Germany
63 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
64 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
65 Sezione INFN di Milano Bicocca, Milano, Italy; Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland; European Organization for Nuclear Research (CERN), Geneva, Switzerland
66 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
67 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia; LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
68 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
69 Sezione INFN di Ferrara, Ferrara, Italy; Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
70 Sezione INFN di Bari, Bari, Italy
71 AGH University of Science and Technology, Kraków, Poland
72 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Department of Physics, University of Oxford, Oxford, United Kingdom
73 Sezione INFN di Cagliari, Cagliari, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
74 Sezione INFN di Ferrara, Ferrara, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
75 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia; Department of Physics, University of Warwick, Coventry, United Kingdom
76 European Organization for Nuclear Research (CERN), Geneva, Switzerland; NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
77 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom; Department of Physics, University of Oxford, Oxford, United Kingdom
78 Soltan Institute for Nuclear Studies, Warsaw, Poland
79 LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France; Imperial College London, London, United Kingdom
80 Department of Physics, University of Warwick, Coventry, United Kingdom; STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
1 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
2 Universitat de Barcelona, Barcelona, Spain
3 Universidad de Santiago de Compostela, Santiago de Compostela, Spain
4 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
5 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
6 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
7 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
8 European Organization for Nuclear Research (CERN), Geneva, Switzerland
9 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
10 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
11 Sezione INFN di Roma La Sapienza, Roma, Italy
12 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
13 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
14 Physik-Institut, Universität Zürich, Zürich, Switzerland
15 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
16 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
17 Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
18 CC-IN2P3, CNRS/IN2P3, Lyon-Villeurbanne, France
19 Institute for High Energy Physics (IHEP), Protvino, Russia
20 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Syracuse University, Syracuse, NY, United States
21 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
22 Department of Physics, University of Warwick, Coventry, United Kingdom
23 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
24 Sezione INFN di Ferrara, Ferrara, Italy
25 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
26 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
27 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
28 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
29 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
30 Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
31 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
32 Sezione INFN di Firenze, Firenze, Italy
33 School of Physics, University College Dublin, Dublin, Ireland
34 Imperial College London, London, United Kingdom
35 Syracuse University, Syracuse, NY, United States
36 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
37 Sezione INFN di Cagliari, Cagliari, Italy
38 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom; School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
39 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
40 Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
41 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
42 Sezione INFN di Milano Bicocca, Milano, Italy
43 Sezione INFN di Bologna, Bologna, Italy
44 Sezione INFN di Roma Tor Vergata, Roma, Italy
45 Sezione INFN di Genova, Genova, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
46 Department of Physics, University of Oxford, Oxford, United Kingdom
47 European Organization for Nuclear Research (CERN), Geneva, Switzerland; School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
48 LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
49 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
50 Sezione INFN di Bologna, Bologna, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
51 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
52 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
53 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
54 University of Birmingham, Birmingham, United Kingdom
55 Sezione INFN di Bologna, Bologna, Italy; Sezione INFN di Ferrara, Ferrara, Italy
56 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
57 Sezione INFN di Genova, Genova, Italy
58 Center for High Energy Physics, Tsinghua University, Beijing, China
59 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Department of Physics, University of Warwick, Coventry, United Kingdom
60 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
61 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland; Imperial College London, London, United Kingdom
62 Physikalisches Institut, Universität Rostock, Rostock, Germany
63 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
64 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
65 Sezione INFN di Milano Bicocca, Milano, Italy; Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland; European Organization for Nuclear Research (CERN), Geneva, Switzerland
66 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
67 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia; LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
68 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
69 Sezione INFN di Ferrara, Ferrara, Italy; Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia; European Organization for Nuclear Research (CERN), Geneva, Switzerland
70 Sezione INFN di Bari, Bari, Italy
71 AGH University of Science and Technology, Kraków, Poland
72 European Organization for Nuclear Research (CERN), Geneva, Switzerland; Department of Physics, University of Oxford, Oxford, United Kingdom
73 Sezione INFN di Cagliari, Cagliari, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
74 Sezione INFN di Ferrara, Ferrara, Italy; European Organization for Nuclear Research (CERN), Geneva, Switzerland
75 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia; Department of Physics, University of Warwick, Coventry, United Kingdom
76 European Organization for Nuclear Research (CERN), Geneva, Switzerland; NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
77 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom; Department of Physics, University of Oxford, Oxford, United Kingdom
78 Soltan Institute for Nuclear Studies, Warsaw, Poland
79 LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France; Imperial College London, London, United Kingdom
80 Department of Physics, University of Warwick, Coventry, United Kingdom; STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
Pages
1-16
Publication year
2012
Publication date
Jun 2012
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2294156866
Copyright
The European Physical Journal C is a copyright of Springer, (2012). All Rights Reserved.