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dc.contributor.authorAaij, R
dc.contributor.authorBeteta, CA
dc.contributor.authorAckernley, T
dc.contributor.authorAdeva, B
dc.contributor.authorAdinolfi, M
dc.contributor.authorAfsharnia, H
dc.contributor.authorAidala, CA
dc.contributor.authorAiola, S
dc.contributor.authorAjaltouni, Z
dc.contributor.authorAkar, S
dc.contributor.authorAlbrecht, J
dc.contributor.authorAlessio, F
dc.contributor.authorAlexander, M
dc.contributor.authorAlbero, AA
dc.contributor.authorAliouche, Z
dc.contributor.authorAlkhazov, G
dc.contributor.authorCartelle, PA
dc.contributor.authorAmato, S
dc.contributor.authorAmhis, Y
dc.contributor.authorAn, L
dc.contributor.authorAnderlini, L
dc.contributor.authorAndreianov, A
dc.contributor.authorAndreotti, M
dc.contributor.authorArchilli, F
dc.contributor.authorArtamonov, A
dc.contributor.authorArtuso, M
dc.contributor.authorArzymatov, K
dc.contributor.authorAslanides, E
dc.contributor.authorAtzeni, M
dc.contributor.authorAudurier, B
dc.contributor.authorBachmann, S
dc.contributor.authorBachmayer, M
dc.contributor.authorBack, JJ
dc.contributor.authorBaker, S
dc.contributor.authorRodriguez, PB
dc.contributor.authorBalagura, V
dc.contributor.authorBaldini, W
dc.contributor.authorLeite, JB
dc.contributor.authorBarlow, RJ
dc.contributor.authorBarsuk, S
dc.contributor.authorBarter, W
dc.contributor.authorBartolini, M
dc.contributor.authorBaryshnikov, F
dc.contributor.authorBasels, JM
dc.contributor.authorBassi, G
dc.contributor.authorBatsukh, B
dc.contributor.authorBattig, A
dc.contributor.authorBay, A
dc.contributor.authorBecker, M
dc.contributor.authorBedeschi, F
dc.contributor.authorBediaga, I
dc.contributor.authorBeiter, A
dc.contributor.authorBelavin, V
dc.contributor.authorBelin, S
dc.contributor.authorBellee, V
dc.contributor.authorBelous, K
dc.contributor.authorBelov, I
dc.contributor.authorBelyaev, I
dc.contributor.authorBencivenni, G
dc.contributor.authorBen-Haim, E
dc.contributor.authorBerezhnoy, A
dc.contributor.authorBernet, R
dc.contributor.authorBerninghoff, D
dc.contributor.authorBernstein, HC
dc.contributor.authorBertella, C
dc.contributor.authorBertholet, E
dc.contributor.authorBertolin, A
dc.contributor.authorBetancourt, C
dc.contributor.authorBetti, F
dc.contributor.authorBettler, MO
dc.contributor.authorBezshyiko, I
dc.contributor.authorBhasin, S
dc.contributor.authorBhom, J
dc.contributor.authorBian, L
dc.contributor.authorBieker, MS
dc.contributor.authorBifani, S
dc.contributor.authorBilloir, P
dc.contributor.authorBirch, M
dc.contributor.authorBishop, FCR
dc.contributor.authorBizzeti, A
dc.contributor.authorBjørn, M
dc.contributor.authorBlago, MP
dc.contributor.authorBlake, T
dc.contributor.authorBlanc, F
dc.contributor.authorBlusk, S
dc.contributor.authorBobulska, D
dc.contributor.authorBoelhauve, JA
dc.contributor.authorGarcia, OB
dc.contributor.authorBoettcher, T
dc.contributor.authorBoldyrev, A
dc.contributor.authorBondar, A
dc.contributor.authorBondar, N
dc.contributor.authorBorghi, S
dc.contributor.authorBorisyak, M
dc.contributor.authorBorsato, M
dc.contributor.authorBorsuk, JT
dc.contributor.authorBouchiba, SA
dc.contributor.authorBowcock, TJV
dc.contributor.authorBoyer, A
dc.contributor.authorBozzi, C
dc.date.accessioned2021-09-28T15:29:00Z
dc.date.available2021-09-28T15:29:00Z
dc.date.issued2021
dc.date.submitted2020-11-02
dc.identifier.issn1434-6044
dc.identifier.others10052-021-09305-3
dc.identifier.other9305
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/328640
dc.description.abstractA structure is observed in the $B^+K^-$ mass spectrum in a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^-1$. The structure is interpreted as the result of overlapping excited $B_s^0$ states. With high significance, a two-peak hypothesis provides a better description of the data than a single resonance. Under this hypothesis the masses and widths of the two states, assuming they decay directly to $B^+K^-$, are determined to be $m_1 = 6063.5 \pm 1.2 \text{ (stat)} \pm 0.8\text{ (syst) MeV},$ $\Gamma_1 = 26 \pm 4 \text{ (stat)} \pm 4\text{ (syst) MeV},$ $m_2 = 6114 \pm 3 \text{ (stat)} \pm 5\text{ (syst) MeV},$ $\Gamma_2 = 66 \pm 18 \text{ (stat)} \pm 21\text{ (syst) MeV}.$ Alternative values assuming a decay through $B^{*+}K^-$, with a missing photon from the $B^{*+} \rightarrow B^+\gamma$ decay, which are shifted by approximately 45 MeV are also determined. The possibility of a single state decaying in both channels is also considered. The ratio of the total production cross-section times branching fraction of the new states relative to the previously observed $B_{s2}^{*0}$ state is determined to be $0.87 \pm 0.15 \text{ (stat)} \pm 0.19 \text{ (syst)}$.
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.subjectRegular Article - Experimental Physics
dc.titleObservation of new excited Bs0 states
dc.typeArticle
dc.date.updated2021-09-28T15:28:58Z
prism.issueIdentifier7
prism.publicationNameEuropean Physical Journal C
prism.volume81
dc.identifier.doi10.17863/CAM.76090
dcterms.dateAccepted2021-06-02
rioxxterms.versionofrecord10.1140/epjc/s10052-021-09305-3
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidRudolph, M. S. [0000-0002-0050-575X]
dc.identifier.eissn1434-6052
dc.publisher.urlhttp://dx.doi.org/10.1140/epjc/s10052-021-09305-3
cam.issuedOnline2021-07-12


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