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Journal articles
Measurement of the lifetime of the B+c meson using the B+c→J/ψπ+ decay mode
J. Aaij
L. Beaucourt
1
M. Chefdeville
1
D. Decamp
1
N. Déléage
1
Ph. Ghez
1
J.-P. Lees
1
J.F. Marchand
1
M.-N. Minard
1
B. Pietrzyk
1
W. Qian
1
S. t'Jampens
1
V. Tisserand
1
E. Tournefier
1
Y. Amhis
2
S. Barsuk
2
M. Borsato
2
O. Kochebina
2
J. Lefrançois
2
F. Machefert
2
A. Martin Sanchez
2
Marie Nicol
2
P. Robbe
2
M.-H. Schune
2
M. Teklishyn
2
A. Vallier
2
B. Viaud
2
S. Akar
3
E. Aslanides
3
J. Cogan
3
W. Kanso
3
R. Legac
3
O. Leroy
3
G. Mancinelli
3
A. Mordà
3
J. Serrano
3
A. Tsaregorodtsev
3
Ziad Ajaltouni
4
M. Baalouch
4
E. Cogneras
4
O. Deschamps
4
I. El Rifai
4
G. Gazzoni
4
M. Grabalosa Gándara
4
Pierre Henrard
4
M. Hoballah
4
R. Lefèvre
4
J. Maratas
4
S. Monteil
4
V. Niess
4
P. Perret
4
J. Aaij
Author
L. Beaucourt 1
Author
M. Chefdeville 1
Author IdHAL : maximilien-chefdeville arXiv : https://arxiv.org/a/Maximilien Chefdeville MC ORCID : https://orcid.org/0000-0002-6553-6493
D. Decamp 1
Author
M.-N. Minard 1
Author
B. Pietrzyk 1
Author
W. Qian 1
Author
S. t'Jampens 1
Author IdHAL : stephane-tjampens ORCID : https://orcid.org/0000-0003-4249-6641
O. Leroy 3
Author IdHAL : olivier-leroy ORCID : https://orcid.org/0000-0002-2589-240X
G. Mancinelli 3
Author
A. Mordà 3
Author
J. Serrano 3
Author IdHAL : justine-serrano arXiv : https://arxiv.org/a/Justine Serrano ORCID : https://orcid.org/0000-0003-2489-7812
A. Tsaregorodtsev 3
Author
Ziad Zj Ajaltouni 4
Author
M. Baalouch 4
Author
E. Cogneras 4
Author IdHAL : eric-cogneras ORCID : https://orcid.org/0000-0002-8933-9427
O. Deschamps 4
Author IdHAL : olivier-deschamps arXiv : http://arxiv.org/a/deschamps_o_1 ORCID : https://orcid.org/0000-0002-7047-6042
I. El Rifai 4
Author
G. Gazzoni 4
Author
M. Grabalosa Gándara 4
Author
S. Monteil 4
Author
V. Niess 4
Author
P. Perret 4
Author IdHAL : pascal-perret ORCID : https://orcid.org/0000-0002-5732-4343
1
LAPP - Laboratoire d'Annecy de Physique des Particules (9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc (27, rue Marcoz - 73000 Chambéry - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5814 (France)
2
LAL - Laboratoire de l'Accélérateur Linéaire (Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8607 (France)
3
CPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)
- AMU - Aix Marseille Université : UMR7346 / UMR6550 / UMR6450 / URA6450 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR7346 / UMR6550 / UMR6450 / URA6450 (France)
4
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand (Campus des Cézeaux, 24 avenue des Landais, BP 80026, 63171 Aubière Cedex - France)
- UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6533 (France)
Abstract : The difference in total widths between the B+c and B+ mesons is measured using 3.0fb−1 of data collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy proton-proton collisions at the LHC. Through the study of the time evolution of B+c→J/ψπ+ and B+→J/ψK+ decays, the width difference is measured to beΔΓ≡ΓB+c−ΓB+=4.46±0.14±0.07mm−1c,where the first uncertainty is statistical and the second systematic. The known lifetime of the B+ meson is used to convert this to a precise measurement of the B+c lifetime,τB+c=513.4±11.0±5.7fs,where the first uncertainty is statistical and the second systematic.
Document type :
Journal articles
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http://hal.in2p3.fr/in2p3-01088069
Contributor : Sabine Starita <>
Submitted on : Thursday, February 26, 2015 - 3:17:05 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:14 PM
Long-term archiving on: : Wednesday, May 27, 2015 - 12:06:06 PM
Contributor : Sabine Starita <>
Submitted on : Thursday, February 26, 2015 - 3:17:05 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:14 PM
Long-term archiving on: : Wednesday, May 27, 2015 - 12:06:06 PM
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Identifiers
- HAL Id : in2p3-01088069, version 1
- DOI : 10.1016/j.physletb.2015.01.010
- ARXIV : 1411.6899
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IN2P3 | UNIV-SAVOIE | CPPM | LAL | LAPP | CNRS | UNIV-AMU | LPC-CLERMONT | PRES_CLERMONT | ACL-SF | ENIGMASS | UGA
Citation
J. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Measurement of the lifetime of the B+c meson using the B+c→J/ψπ+ decay mode. Physics Letters B, Elsevier, 2015, 742, pp.29-37. ⟨10.1016/j.physletb.2015.01.010⟩. ⟨in2p3-01088069⟩
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