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Search for long-lived scalar particles in B+→ K+χ(μ+μ−) decays

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Title: Search for long-lived scalar particles in B+→ K+χ(μ+μ−) decays
Authors: Aaij, R
Adeva, B
Adinolfi, M
Ajaltouni, Z
Akar, S
Albrecht, J
Alessio, F
Alexander, M
Ali, S
Alkhazov, G
Cartelle, PA
Alves, AA
Amato, S
Amerio, S
Amhis, Y
An, L
Anderlini, L
Andreassi, G
Andreotti, M
Andrews, JE
Appleby, RB
Archilli, F
D'Argent, P
Romeu, JA
Artamonov, A
Artuso, M
Aslanides, E
Auriemma, G
Baalouch, M
Babuschkin, I
Bachmann, S
Back, JJ
Badalov, A
Baesso, C
Baker, S
Balagura, V
Baldini, W
Barlow, RJ
Barschel, C
Barsuk, S
Barter, W
Baryshnikov, F
Baszczyk, M
Batozskaya, V
Batsukh, B
Battista, V
Bay, A
Beaucourt, L
Beddow, J
Bedeschi, F
Bediaga, I
Bel, LJ
Bellee, V
Belloli, N
Belous, K
Belyaev, I
Ben-Haim, E
Bencivenni, G
Benson, S
Berezhnoy, A
Bernet, R
Bertolin, A
Betancourt, C
Betti, F
Bettler, M-O
Van Beuzekom, M
Bezshyiko, I
Bifani, S
Billoir, P
Bird, T
Birnkraut, A
Bitadze, A
Bizzeti, A
Blake, T
Blanc, F
Blouw, J
Blusk, S
Bocci, V
Boettcher, T
Bondar, A
Bondar, N
Bonivento, W
Bordyuzhin, I
Borgheresi, A
Borghi, S
Borisyak, M
Borsato, M
Bossu, F
Boubdir, M
Bowcock, TJV
Bowen, E
Bozzi, C
Braun, S
Britsch, M
Britton, T
Brodzicka, J
Buchanan, E
Burr, C
Bursche, A
Buytaert, J
Cadeddu, S
Calabrese, R
Calvi, M
Gomez, MC
Camboni, A
Campana, P
Perez, DHC
Capriotti, L
Carbone, A
Carboni, G
Cardinale, R
Cardini, A
Carniti, P
Carson, L
Akiba, KC
Casse, G
Cassina, L
Garcia, LC
Cattaneo, M
Cavallero, G
Cenci, R
Chamont, D
Charles, M
Charpentier, P
Chatzikonstantinidis, G
Chefdeville, M
Chen, S
Cheung, S-F
Chobanova, V
Chrzaszcz, M
Vidal, XC
Ciezarek, G
Clarke, PEL
Clemencic, M
Cliff, HV
Closier, J
Coco, V
Cogan, J
Cogneras, E
Cogoni, V
Cojocariu, L
Collazuol, G
Collins, P
Comerma-Montells, A
Contu, A
Cook, A
Coombs, G
Coquereau, S
Corti, G
Corvo, M
Sobral, CMC
Couturier, B
Cowan, GA
Craik, DC
Crocombe, A
Torres, MC
Cunliffe, S
Currie, R
D'Ambrosio, C
Marinho, FDC
Dall'Occo, E
Dalseno, J
David, PNY
Davis, A
De Bruyn, K
De Capua, S
De Cian, M
De Miranda, JM
De Paula, L
De Serio, M
De Simone, P
Dean, C-T
Decamp, D
Deckenhoff, M
Del Buono, L
Demmer, M
Dendek, A
Derkach, D
Deschamps, O
Dettori, F
Dey, B
Di Canto, A
Dijkstra, H
Dordei, F
Dorigo, M
Suarez, AD
Dovbnya, A
Dreimanis, K
Dufour, L
Dujany, G
Dungs, K
Durante, P
Dzhelyadin, R
Dziurda, A
Dzyuba, A
Deleage, N
Easo, S
Ebert, M
Egede, U
Egorychev, V
Eidelman, S
Eisenhardt, S
Eitschberger, U
Ekelhof, R
Eklund, L
Ely, S
Esen, S
Evans, HM
Evans, T
Falabella, A
Farley, N
Farry, S
Fay, R
Fazzini, D
Ferguson, D
Prieto, AF
Ferrari, F
Rodrigues, FF
Ferro-Luzzi, M
Filippov, S
Fini, RA
Fiore, M
Fiorini, M
Firlej, M
Fitzpatrick, C
Fiutowski, T
Fleuret, F
Fohl, K
Fontana, M
Fontanelli, F
Forshaw, DC
Forty, R
Lima, VF
Frank, M
Frei, C
Fu, J
Funk, W
Furfaro, E
Farber, C
Torreira, AG
Galli, D
Gallorini, S
Gambetta, S
Gandelman, M
Gandini, P
Gao, Y
Martin, LMG
Pardinas, JG
Tico, JG
Garrido, L
Garsed, PJ
Gascon, D
Gaspar, C
Gavardi, L
Gazzoni, G
Gerick, D
Gersabeck, E
Gersabeck, M
Gershon, T
Ghez, P
Giani, S
Gibson, V
Girard, OG
Giubega, L
Gizdov, K
Gligorov, VV
Golubkov, D
Golutvin, A
Gomes, A
Gorelov, IV
Gotti, C
Diaz, RG
Cardoso, LAG
Grauges, E
Graverini, E
Graziani, G
Grecu, A
Griffith, P
Grillo, L
Cazon, BRG
Grunberg, O
Gushchin, E
Guz, Y
Gys, T
Gobel, C
Hadavizadeh, T
Hadjivasiliou, C
Haefeli, G
Haen, C
Haines, SC
Hamilton, B
Han, X
Hansmann-Menzemer, S
Harnew, N
Harnew, ST
Harrison, J
Hatch, M
He, J
Head, T
Heister, A
Hennessy, K
Henrard, P
Henry, L
Van Herwijnen, E
Hess, M
Hicheur, A
Hill, D
Hombach, C
Hopchev, H
Hulsbergen, W
Humair, T
Hushchyn, M
Hutchcroft, D
Idzik, M
Ilten, P
Jacobsson, R
Jaeger, A
Jalocha, J
Jans, E
Jawahery, A
Jiang, F
John, M
Johnson, D
Jones, CR
Joram, C
Jost, B
Jurik, N
Kandybei, S
Karacson, M
Kariuki, JM
Karodia, S
Kecke, M
Kelsey, M
Kenzie, M
Ketel, T
Khairullin, E
Khanji, B
Khurewathanakul, C
Kirn, T
Klaver, S
Klimaszewski, K
Koliiev, S
Kolpin, M
Komarov, I
Koopman, RF
Koppenburg, P
Kosmyntseva, A
Kozachuk, A
Kozeiha, M
Kravchuk, L
Kreplin, K
Kreps, M
Krokovny, P
Kruse, F
Krzemien, W
Kucewicz, W
Kucharczyk, M
Kudryavtsev, V
Kuonen, AK
Kurek, K
Kvaratskheliya, T
Lacarrere, D
Lafferty, G
Lai, A
Lanfranchi, G
Langenbruch, C
Latham, T
Lazzeroni, C
Le Gac, R
Van Leerdam, J
Leflat, A
Lefrancois, J
Lefevre, R
Lemaitre, F
Cid, EL
Leroy, O
Lesiak, T
Leverington, B
Li, T
Li, Y
Likhomanenko, T
Lindner, R
Linn, C
Lionetto, F
Liu, X
Loh, D
Longstaff, I
Lopes, JH
Lucchesi, D
Martinez, ML
Luo, H
Lupato, A
Luppi, E
Lupton, O
Lusiani, A
Lyu, X
Machefert, F
Maciuc, F
Maev, O
Maguire, K
Malde, S
Malinin, A
Maltsev, T
Manca, G
Mancinelli, G
Manning, P
Maratas, J
Marchand, JF
Marconi, U
Benito, CM
Marinangeli, M
Marino, P
Marks, J
Martellotti, G
Martin, M
Martinelli, M
Santos, DM
Vidal, FM
Tostes, DM
Massacrier, LM
Massafferri, A
Matev, R
Mathad, A
Mathe, Z
Matteuzzi, C
Mauri, A
Maurice, E
Maurin, B
Mazurov, A
McCann, M
McNab, A
McNulty, R
Meadows, B
Meier, F
Meissner, M
Melnychuk, D
Merk, M
Merli, A
Michielin, E
Milanes, DA
Minard, M-N
Mitzel, DS
Mogini, A
Rodriguez, JM
Monroy, IA
Monteil, S
Morandin, M
Morawski, P
Morda, A
Morello, MJ
Morgunova, O
Moron, J
Morris, AB
Mountain, R
Muheim, F
Mulder, M
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Mueller, D
Mueller, J
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Mueller, V
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Nandakumar, R
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Neubert, S
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Item Type: Journal Article
Abstract: A search for a long-lived scalar particle χ is performed, looking for the decay B+→K+χ with χ→μ+μ− in pp collision data corresponding to an integrated luminosity of 3  fb−1, collected by the LHCb experiment at center-of-mass energies of √s=7 and 8 TeV. This new scalar particle, predicted by hidden sector models, is assumed to have a narrow width. The signal would manifest itself as an excess in the dimuon invariant mass distribution over the Standard Model background. No significant excess is observed in the accessible ranges of mass 250<m(χ)<4700  MeV/c2 and lifetime 0.1<τ(χ)<1000  ps. Upper limits on the branching fraction B(B+→K+χ(μ+μ−)) at 95% confidence level are set as a function of m(χ) and τ(χ), varying between 2×10−10 and 10−7. These are the most stringent limits to date. The limits are interpreted in the context of a model with a light inflaton particle.
Issue Date: 14-Apr-2017
Date of Acceptance: 1-Apr-2017
URI: http://hdl.handle.net/10044/1/48319
DOI: https://dx.doi.org/10.1103/PhysRevD.95.071101
ISSN: 2470-0010
Publisher: American Physical Society
Journal / Book Title: PHYSICAL REVIEW D
Volume: 95
Issue: 7
Copyright Statement: © 2017 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
INFLATON
hep-ex
Publication Status: Published
Open Access location: http://dx.doi.org/10.1103/PhysRevD.95.071101
Article Number: ARTN 071101
Appears in Collections:Physics
High Energy Physics



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