Observation of New Resonances Decaying to J / ψ K + and J / ψ ϕ

Aaij, R.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C. A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A.; Aliouche, Z.; Alkhazov, G.; Alvarez Cartelle, P.; Amato, S.; Amhis, Y.; An, L.; Anderlini, L.; Andreianov, A.; Andreotti, M.; Archilli, F.; Artamonov, A.; Artuso, M.; Arzymatov, K.; Aslanides, E.; Atzeni, M.; Audurier, B.; Bachmann, S.; Bachmayer, M.; Back, J. J.; Baker, S.; Baladron Rodriguez, P.; Balagura, V.; Baldini, W.; Baptista Leite, J.; Barlow, R. J.; Barsuk, S.; Barter, W.; Bartolini, M.; Baryshnikov, F.; Basels, J. M.; Bassi, G.; Batsukh, B.; Battig, A.; Bay, A.; Becker, M.; Bedeschi, F.; Bediaga, I.; Beiter, A.; Belavin, V.; Belin, S.; Bellee, V.; Belous, K.; Belov, I.; Belyaev, I.; Bencivenni, G.; Ben-Haim, E.; Berezhnoy, A.; Bernet, R.; Berninghoff, D.; Bernstein, H. 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doi:10.1103/PhysRevLett.127.082001

Title: Observation of New Resonances Decaying to $J / ψ K^{+}$ and $J / ψ ϕ$

Journal Article · Tue Aug 17 00:00:00 EDT 2021 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.127.082001· OSTI ID:1813625

Aaij, R.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C. A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A.; Aliouche, Z.; Alkhazov, G.; Alvarez Cartelle, P.; Amato, S.; Amhis, Y.; An, L. more »

The first observation of exotic states with a new quark content $$c\bar{c}u\bar{s}$$ decaying to the J/ψK⁺ final state is reported with high significance from an amplitude analysis of the B⁺→J/ψΦK⁺ decay. The analysis is carried out using proton-proton collision data corresponding to a total integrated luminosity of 9 fb^–1 collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV. The most significant state, Z_cs(4000)⁺, has a mass of 4003±$$6^{+4}_{–14}$$ MeV , a width of 131±15±26 MeV , and spin parity J^P=1⁺, where the quoted uncertainties are statistical and systematic, respectively. A new 1⁺ X(4685) state decaying to the J/ψΦ final state is also observed with high significance. In addition, the four previously reported J/ψΦ states are confirmed and two more exotic states, Z_cs(4220)⁺ and X(4630), are observed with significance exceeding 5 standard deviations.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Organization:: LHCb Collaboration

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1813625

Alternate ID(s):: OSTI ID: 1900477

Report Number(s):: LA-UR-21-22233; PRLTAO; 082001

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 127 Journal Issue: 8; ISSN 0031-9007

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Observation of a peaking structure in the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:mi mathvariant="normal">J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>ϕ</mml:mi></mml:math> mass spectrum from <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msup><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mi mathvariant="normal">J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>ϕ</mml:mi><mml:msup><mml:mrow><mml:mi mathvariant="normal">K</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:math> decays Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physics Letters B, Vol. 734 https://doi.org/10.1016/j.physletb.2014.05.055	journal	June 2014
Observation of two resonancelike structures in the $π^{+} χ_{c 1}$ mass distribution in exclusive ${\bar{B}}^{0} \to K^{-} π^{+} χ_{c 1}$ decays Mizuk, R.; Chistov, R.; Adachi, I. Physical Review D, Vol. 78, Issue 7 https://doi.org/10.1103/PhysRevD.78.072004	journal	October 2008
$D_sD^*$ Molecule as an Axial Meson Lee, SuHoung; Nielsen, Marina; Wiedner, Ulrich Journal of the Korean Physical Society, Vol. 55, Issue 2 https://doi.org/10.3938/jkps.55.424	journal	August 2009
Observation of the Y (4140) structure in the J/ψϕ mass spectrum in B±→ J/ψϕK± decays Aaltonen, T.; González, B. Álvarez; Amerio, S. Modern Physics Letters A, Vol. 32, Issue 26 https://doi.org/10.1142/S0217732317501395	journal	August 2017
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Predictions of Charged Charmoniumlike Structures with Hidden-Charm and Open-Strange Channels Chen, Dian-Yong; Liu, Xiang; Matsuki, Takayuki Physical Review Letters, Vol. 110, Issue 23 https://doi.org/10.1103/PhysRevLett.110.232001	journal	June 2013
Coupled-channel analysis of the πη and KK̄ systems near KK̄ threshold Flatté, S. M. Physics Letters B, Vol. 63, Issue 2 https://doi.org/10.1016/0370-2693(76)90654-7	journal	July 1976
LHCb detector performance International Journal of Modern Physics A, Vol. 30, Issue 07, 1530022 https://doi.org/10.1142/S0217751X15300227	journal	March 2015
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