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First Observation of Excited Ω b − States
We report four narrow peaks in the Ξb0K− mass spectrum obtained using pp collisions at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 recorded by the LHCb experiment. Referring to these states by their mass, the mass values are m[Ωb(6316)−]=631...
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Published in: | Physical review letters 2020-02, Vol.124 (8), p.1, Article 082002 |
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creator | Aaij, R. Abellán Beteta, C. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Albicocco, P. Albrecht, J. Alessio, F. Alexander, M. Alfonso Albero, A. Alkhazov, G. Alvarez Cartelle, P. Alves, A. A. Amato, S. Amhis, Y. An, L. Anderlini, L. Andreassi, G. Andreotti, M. Archilli, F. Arnau Romeu, J. Artamonov, A. Artuso, M. Arzymatov, K. Aslanides, E. Atzeni, M. Audurier, B. Bachmann, S. Back, J. J. Baker, S. Balagura, V. Baldini, W. Baranov, A. Barlow, R. J. Barsuk, S. Barter, W. Bartolini, M. Baryshnikov, F. Bassi, G. Batozskaya, V. Batsukh, B. Battig, A. Bay, A. Becker, M. Bedeschi, F. Bediaga, I. Beiter, A. Bel, L. J. Belavin, V. Belin, S. Bellee, V. Belous, K. Belyaev, I. Bencivenni, G. Ben-Haim, E. Benson, S. Beranek, S. Berezhnoy, A. Bernet, R. Berninghoff, D. Bernstein, H. C. Bertella, C. Bertholet, E. Bertolin, A. Betancourt, C. Betti, F. Bettler, M. O. Bezshyiko, Ia Bhasin, S. Bhom, J. Bieker, M. S. Bifani, S. Billoir, P. Bizzeti, A. Bjørn, M. Blago, M. P. Blake, T. Blanc, F. Blusk, S. Bobulska, D. Bocci, V. Boente Garcia, O. Boettcher, T. Boldyrev, A. Bondar, A. Bondar, N. Borghi, S. Borisyak, M. Borsato, M. Borsuk, J. T. Bowcock, T. J. V. Bozzi, C. Bradley, M. J. Braun, S. Brea Rodriguez, A. |
description | We report four narrow peaks in the Ξb0K− mass spectrum obtained using pp collisions at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 recorded by the LHCb experiment. Referring to these states by their mass, the mass values are m[Ωb(6316)−]=6315.64±0.31±0.07±0.50 MeV, m[Ωb(6330)−]=6330.30±0.28±0.07±0.50 MeV, m[Ωb(6340)−]=6339.71±0.26±0.05±0.50 MeV, m[Ωb(6350)−]=6349.88±0.35±0.05±0.50 MeV, where the uncertainties are statistical, systematic, and the last is due to the knowledge of the Ξb0 mass. The natural widths of the three lower mass states are consistent with zero, and the 90% confidence-level upper limits are determined to be Γ[Ωb(6316)−] |
doi_str_mv | 10.1103/PhysRevLett.124.082002 |
format | article |
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A. ; Aiola, S. ; Ajaltouni, Z. ; Akar, S. ; Albicocco, P. ; Albrecht, J. ; Alessio, F. ; Alexander, M. ; Alfonso Albero, A. ; Alkhazov, G. ; Alvarez Cartelle, P. ; Alves, A. A. ; Amato, S. ; Amhis, Y. ; An, L. ; Anderlini, L. ; Andreassi, G. ; Andreotti, M. ; Archilli, F. ; Arnau Romeu, J. ; Artamonov, A. ; Artuso, M. ; Arzymatov, K. ; Aslanides, E. ; Atzeni, M. ; Audurier, B. ; Bachmann, S. ; Back, J. J. ; Baker, S. ; Balagura, V. ; Baldini, W. ; Baranov, A. ; Barlow, R. J. ; Barsuk, S. ; Barter, W. ; Bartolini, M. ; Baryshnikov, F. ; Bassi, G. ; Batozskaya, V. ; Batsukh, B. ; Battig, A. ; Bay, A. ; Becker, M. ; Bedeschi, F. ; Bediaga, I. ; Beiter, A. ; Bel, L. J. ; Belavin, V. ; Belin, S. ; Bellee, V. ; Belous, K. ; Belyaev, I. ; Bencivenni, G. ; Ben-Haim, E. ; Benson, S. ; Beranek, S. ; Berezhnoy, A. ; Bernet, R. ; Berninghoff, D. ; Bernstein, H. C. ; Bertella, C. ; Bertholet, E. ; Bertolin, A. ; Betancourt, C. ; Betti, F. ; Bettler, M. O. ; Bezshyiko, Ia ; Bhasin, S. ; Bhom, J. ; Bieker, M. S. ; Bifani, S. ; Billoir, P. ; Bizzeti, A. ; Bjørn, M. ; Blago, M. P. ; Blake, T. ; Blanc, F. ; Blusk, S. ; Bobulska, D. ; Bocci, V. ; Boente Garcia, O. ; Boettcher, T. ; Boldyrev, A. ; Bondar, A. ; Bondar, N. ; Borghi, S. ; Borisyak, M. ; Borsato, M. ; Borsuk, J. T. ; Bowcock, T. J. V. ; Bozzi, C. ; Bradley, M. J. ; Braun, S. ; Brea Rodriguez, A.</creator><creatorcontrib>Aaij, R. ; Abellán Beteta, C. ; Ackernley, T. ; Adeva, B. ; Adinolfi, M. ; Afsharnia, H. ; Aidala, C. A. ; Aiola, S. ; Ajaltouni, Z. ; Akar, S. ; Albicocco, P. ; Albrecht, J. ; Alessio, F. ; Alexander, M. ; Alfonso Albero, A. ; Alkhazov, G. ; Alvarez Cartelle, P. ; Alves, A. A. ; Amato, S. ; Amhis, Y. ; An, L. ; Anderlini, L. ; Andreassi, G. ; Andreotti, M. ; Archilli, F. ; Arnau Romeu, J. ; Artamonov, A. ; Artuso, M. ; Arzymatov, K. ; Aslanides, E. ; Atzeni, M. ; Audurier, B. ; Bachmann, S. ; Back, J. J. ; Baker, S. ; Balagura, V. ; Baldini, W. ; Baranov, A. ; Barlow, R. J. ; Barsuk, S. ; Barter, W. ; Bartolini, M. ; Baryshnikov, F. ; Bassi, G. ; Batozskaya, V. ; Batsukh, B. ; Battig, A. ; Bay, A. ; Becker, M. ; Bedeschi, F. ; Bediaga, I. ; Beiter, A. ; Bel, L. J. ; Belavin, V. ; Belin, S. ; Bellee, V. ; Belous, K. ; Belyaev, I. ; Bencivenni, G. ; Ben-Haim, E. ; Benson, S. ; Beranek, S. ; Berezhnoy, A. ; Bernet, R. ; Berninghoff, D. ; Bernstein, H. C. ; Bertella, C. ; Bertholet, E. ; Bertolin, A. ; Betancourt, C. ; Betti, F. ; Bettler, M. O. ; Bezshyiko, Ia ; Bhasin, S. ; Bhom, J. ; Bieker, M. S. ; Bifani, S. ; Billoir, P. ; Bizzeti, A. ; Bjørn, M. ; Blago, M. P. ; Blake, T. ; Blanc, F. ; Blusk, S. ; Bobulska, D. ; Bocci, V. ; Boente Garcia, O. ; Boettcher, T. ; Boldyrev, A. ; Bondar, A. ; Bondar, N. ; Borghi, S. ; Borisyak, M. ; Borsato, M. ; Borsuk, J. T. ; Bowcock, T. J. V. ; Bozzi, C. ; Bradley, M. J. ; Braun, S. ; Brea Rodriguez, A. ; LHCb Collaboration</creatorcontrib><description>We report four narrow peaks in the Ξb0K− mass spectrum obtained using pp collisions at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 recorded by the LHCb experiment. Referring to these states by their mass, the mass values are m[Ωb(6316)−]=6315.64±0.31±0.07±0.50 MeV, m[Ωb(6330)−]=6330.30±0.28±0.07±0.50 MeV, m[Ωb(6340)−]=6339.71±0.26±0.05±0.50 MeV, m[Ωb(6350)−]=6349.88±0.35±0.05±0.50 MeV, where the uncertainties are statistical, systematic, and the last is due to the knowledge of the Ξb0 mass. The natural widths of the three lower mass states are consistent with zero, and the 90% confidence-level upper limits are determined to be Γ[Ωb(6316)−]<2.8 MeV, Γ[Ωb(6330)−]<3.1 MeV and Γ[Ωb(6340)−]<1.5 MeV. The natural width of the Ωb(6350)− peak is 1.4−0.8+1.0±0.1 MeV, which is 2.5σ from zero and corresponds to an upper limit of 2.8 MeV. The peaks have local significances ranging from 3.6σ to 7.2σ. After accounting for the look-elsewhere effect, the significances of the Ωb(6316)− and Ωb(6330)− peaks are reduced to 2.1σ and 2.6σ, respectively, while the two higher mass peaks exceed 5σ. The observed peaks are consistent with expectations for excited Ωb− resonances.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.124.082002</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Confidence ; High Energy Physics - Experiment ; High Energy Physics - Phenomenology ; Large Hadron Collider ; Luminosity ; Physics</subject><ispartof>Physical review letters, 2020-02, Vol.124 (8), p.1, Article 082002</ispartof><rights>Copyright American Physical Society Feb 28, 2020</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c295t-42a7e34a581579201a954fa0187796000bde95cb7484ff88503acfdbde0fd4cf3</citedby><cites>FETCH-LOGICAL-c295t-42a7e34a581579201a954fa0187796000bde95cb7484ff88503acfdbde0fd4cf3</cites><orcidid>0000-0001-9170-684X ; 0000-0001-7194-7566 ; 0000-0001-7176-2692 ; 0000-0002-5732-4343 ; 0000-0003-1015-9560 ; 0000-0002-0656-9033 ; 0000-0002-4111-0797 ; 0000-0001-9777-881X ; 0000-0001-9341-8083 ; 0000-0002-3411-989X ; 0000-0001-9905-8031 ; 0000-0002-1345-8163 ; 0000-0002-6587-4695 ; 0000-0001-9762-5821 ; 000000019170684X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://hal.science/hal-02447882$$DView record in HAL$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1601705$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Aaij, R.</creatorcontrib><creatorcontrib>Abellán Beteta, C.</creatorcontrib><creatorcontrib>Ackernley, T.</creatorcontrib><creatorcontrib>Adeva, B.</creatorcontrib><creatorcontrib>Adinolfi, M.</creatorcontrib><creatorcontrib>Afsharnia, H.</creatorcontrib><creatorcontrib>Aidala, C. 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J.</creatorcontrib><creatorcontrib>Braun, S.</creatorcontrib><creatorcontrib>Brea Rodriguez, A.</creatorcontrib><creatorcontrib>LHCb Collaboration</creatorcontrib><title>First Observation of Excited Ω b − States</title><title>Physical review letters</title><description>We report four narrow peaks in the Ξb0K− mass spectrum obtained using pp collisions at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 recorded by the LHCb experiment. Referring to these states by their mass, the mass values are m[Ωb(6316)−]=6315.64±0.31±0.07±0.50 MeV, m[Ωb(6330)−]=6330.30±0.28±0.07±0.50 MeV, m[Ωb(6340)−]=6339.71±0.26±0.05±0.50 MeV, m[Ωb(6350)−]=6349.88±0.35±0.05±0.50 MeV, where the uncertainties are statistical, systematic, and the last is due to the knowledge of the Ξb0 mass. The natural widths of the three lower mass states are consistent with zero, and the 90% confidence-level upper limits are determined to be Γ[Ωb(6316)−]<2.8 MeV, Γ[Ωb(6330)−]<3.1 MeV and Γ[Ωb(6340)−]<1.5 MeV. The natural width of the Ωb(6350)− peak is 1.4−0.8+1.0±0.1 MeV, which is 2.5σ from zero and corresponds to an upper limit of 2.8 MeV. The peaks have local significances ranging from 3.6σ to 7.2σ. After accounting for the look-elsewhere effect, the significances of the Ωb(6316)− and Ωb(6330)− peaks are reduced to 2.1σ and 2.6σ, respectively, while the two higher mass peaks exceed 5σ. The observed peaks are consistent with expectations for excited Ωb− resonances.</description><subject>Confidence</subject><subject>High Energy Physics - Experiment</subject><subject>High Energy Physics - Phenomenology</subject><subject>Large Hadron Collider</subject><subject>Luminosity</subject><subject>Physics</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpNkN9KwzAUh4MoOKevIEWvBDvPSdMmuRxjc0Jh4p_rkKYJ65jrbLLh3sBr38KX8SF8Ejsq4tWBHx-_c85HyDnCABGSm_v5zj_YbW5DGCBlAxAUgB6QHgKXMUdkh6QHkGAsAfgxOfF-AQBIM9Ej15Oq8SGaFd42Wx2qehXVLhq_mSrYMvr6jIro-_0jegw6WH9Kjpxeenv2O_vkeTJ-Gk3jfHZ7NxrmsaEyDTGjmtuE6VRgyiUF1DJlTgMKzmXWri5KK1NTcCaYc0KkkGjjyjYFVzLjkj656HprHyrl97eYualXK2uCwgyQQ9pCVx0010u1bqoX3exUrSs1HeZqnwFljAtBt9iylx27burXjfVBLepNs2p_UDThDGWGKFsq6yjT1N431v3VIqi9avVPtWpVq0518gPz_XLR</recordid><startdate>20200225</startdate><enddate>20200225</enddate><creator>Aaij, R.</creator><creator>Abellán Beteta, C.</creator><creator>Ackernley, T.</creator><creator>Adeva, B.</creator><creator>Adinolfi, M.</creator><creator>Afsharnia, H.</creator><creator>Aidala, C. 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J.</creator><creator>Braun, S.</creator><creator>Brea Rodriguez, A.</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>1XC</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0001-9170-684X</orcidid><orcidid>https://orcid.org/0000-0001-7194-7566</orcidid><orcidid>https://orcid.org/0000-0001-7176-2692</orcidid><orcidid>https://orcid.org/0000-0002-5732-4343</orcidid><orcidid>https://orcid.org/0000-0003-1015-9560</orcidid><orcidid>https://orcid.org/0000-0002-0656-9033</orcidid><orcidid>https://orcid.org/0000-0002-4111-0797</orcidid><orcidid>https://orcid.org/0000-0001-9777-881X</orcidid><orcidid>https://orcid.org/0000-0001-9341-8083</orcidid><orcidid>https://orcid.org/0000-0002-3411-989X</orcidid><orcidid>https://orcid.org/0000-0001-9905-8031</orcidid><orcidid>https://orcid.org/0000-0002-1345-8163</orcidid><orcidid>https://orcid.org/0000-0002-6587-4695</orcidid><orcidid>https://orcid.org/0000-0001-9762-5821</orcidid><orcidid>https://orcid.org/000000019170684X</orcidid></search><sort><creationdate>20200225</creationdate><title>First Observation of Excited Ω b − States</title><author>Aaij, R. ; Abellán Beteta, C. ; Ackernley, T. ; Adeva, B. ; Adinolfi, M. ; Afsharnia, H. ; Aidala, C. A. ; Aiola, S. ; Ajaltouni, Z. ; Akar, S. ; Albicocco, P. ; Albrecht, J. ; Alessio, F. ; Alexander, M. ; Alfonso Albero, A. ; Alkhazov, G. ; Alvarez Cartelle, P. ; Alves, A. A. ; Amato, S. ; Amhis, Y. ; An, L. ; Anderlini, L. ; Andreassi, G. ; Andreotti, M. ; Archilli, F. ; Arnau Romeu, J. ; Artamonov, A. ; Artuso, M. ; Arzymatov, K. ; Aslanides, E. ; Atzeni, M. ; Audurier, B. ; Bachmann, S. ; Back, J. J. ; Baker, S. ; Balagura, V. ; Baldini, W. ; Baranov, A. ; Barlow, R. J. ; Barsuk, S. ; Barter, W. ; Bartolini, M. ; Baryshnikov, F. ; Bassi, G. ; Batozskaya, V. ; Batsukh, B. ; Battig, A. ; Bay, A. ; Becker, M. ; Bedeschi, F. ; Bediaga, I. ; Beiter, A. ; Bel, L. J. ; Belavin, V. ; Belin, S. ; Bellee, V. ; Belous, K. ; Belyaev, I. ; Bencivenni, G. ; Ben-Haim, E. ; Benson, S. ; Beranek, S. ; Berezhnoy, A. ; Bernet, R. ; Berninghoff, D. ; Bernstein, H. C. ; Bertella, C. ; Bertholet, E. ; Bertolin, A. ; Betancourt, C. ; Betti, F. ; Bettler, M. O. ; Bezshyiko, Ia ; Bhasin, S. ; Bhom, J. ; Bieker, M. S. ; Bifani, S. ; Billoir, P. ; Bizzeti, A. ; Bjørn, M. ; Blago, M. P. ; Blake, T. ; Blanc, F. ; Blusk, S. ; Bobulska, D. ; Bocci, V. ; Boente Garcia, O. ; Boettcher, T. ; Boldyrev, A. ; Bondar, A. ; Bondar, N. ; Borghi, S. ; Borisyak, M. ; Borsato, M. ; Borsuk, J. T. ; Bowcock, T. J. V. ; Bozzi, C. ; Bradley, M. J. ; Braun, S. ; Brea Rodriguez, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c295t-42a7e34a581579201a954fa0187796000bde95cb7484ff88503acfdbde0fd4cf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Confidence</topic><topic>High Energy Physics - Experiment</topic><topic>High Energy Physics - Phenomenology</topic><topic>Large Hadron Collider</topic><topic>Luminosity</topic><topic>Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Aaij, R.</creatorcontrib><creatorcontrib>Abellán Beteta, C.</creatorcontrib><creatorcontrib>Ackernley, T.</creatorcontrib><creatorcontrib>Adeva, B.</creatorcontrib><creatorcontrib>Adinolfi, M.</creatorcontrib><creatorcontrib>Afsharnia, H.</creatorcontrib><creatorcontrib>Aidala, C. A.</creatorcontrib><creatorcontrib>Aiola, S.</creatorcontrib><creatorcontrib>Ajaltouni, Z.</creatorcontrib><creatorcontrib>Akar, S.</creatorcontrib><creatorcontrib>Albicocco, P.</creatorcontrib><creatorcontrib>Albrecht, J.</creatorcontrib><creatorcontrib>Alessio, F.</creatorcontrib><creatorcontrib>Alexander, M.</creatorcontrib><creatorcontrib>Alfonso Albero, A.</creatorcontrib><creatorcontrib>Alkhazov, G.</creatorcontrib><creatorcontrib>Alvarez Cartelle, P.</creatorcontrib><creatorcontrib>Alves, A. A.</creatorcontrib><creatorcontrib>Amato, S.</creatorcontrib><creatorcontrib>Amhis, Y.</creatorcontrib><creatorcontrib>An, L.</creatorcontrib><creatorcontrib>Anderlini, L.</creatorcontrib><creatorcontrib>Andreassi, G.</creatorcontrib><creatorcontrib>Andreotti, M.</creatorcontrib><creatorcontrib>Archilli, F.</creatorcontrib><creatorcontrib>Arnau Romeu, J.</creatorcontrib><creatorcontrib>Artamonov, A.</creatorcontrib><creatorcontrib>Artuso, M.</creatorcontrib><creatorcontrib>Arzymatov, K.</creatorcontrib><creatorcontrib>Aslanides, E.</creatorcontrib><creatorcontrib>Atzeni, M.</creatorcontrib><creatorcontrib>Audurier, B.</creatorcontrib><creatorcontrib>Bachmann, S.</creatorcontrib><creatorcontrib>Back, J. J.</creatorcontrib><creatorcontrib>Baker, S.</creatorcontrib><creatorcontrib>Balagura, V.</creatorcontrib><creatorcontrib>Baldini, W.</creatorcontrib><creatorcontrib>Baranov, A.</creatorcontrib><creatorcontrib>Barlow, R. J.</creatorcontrib><creatorcontrib>Barsuk, S.</creatorcontrib><creatorcontrib>Barter, W.</creatorcontrib><creatorcontrib>Bartolini, M.</creatorcontrib><creatorcontrib>Baryshnikov, F.</creatorcontrib><creatorcontrib>Bassi, G.</creatorcontrib><creatorcontrib>Batozskaya, V.</creatorcontrib><creatorcontrib>Batsukh, B.</creatorcontrib><creatorcontrib>Battig, A.</creatorcontrib><creatorcontrib>Bay, A.</creatorcontrib><creatorcontrib>Becker, M.</creatorcontrib><creatorcontrib>Bedeschi, F.</creatorcontrib><creatorcontrib>Bediaga, I.</creatorcontrib><creatorcontrib>Beiter, A.</creatorcontrib><creatorcontrib>Bel, L. J.</creatorcontrib><creatorcontrib>Belavin, V.</creatorcontrib><creatorcontrib>Belin, S.</creatorcontrib><creatorcontrib>Bellee, V.</creatorcontrib><creatorcontrib>Belous, K.</creatorcontrib><creatorcontrib>Belyaev, I.</creatorcontrib><creatorcontrib>Bencivenni, G.</creatorcontrib><creatorcontrib>Ben-Haim, E.</creatorcontrib><creatorcontrib>Benson, S.</creatorcontrib><creatorcontrib>Beranek, S.</creatorcontrib><creatorcontrib>Berezhnoy, A.</creatorcontrib><creatorcontrib>Bernet, R.</creatorcontrib><creatorcontrib>Berninghoff, D.</creatorcontrib><creatorcontrib>Bernstein, H. C.</creatorcontrib><creatorcontrib>Bertella, C.</creatorcontrib><creatorcontrib>Bertholet, E.</creatorcontrib><creatorcontrib>Bertolin, A.</creatorcontrib><creatorcontrib>Betancourt, C.</creatorcontrib><creatorcontrib>Betti, F.</creatorcontrib><creatorcontrib>Bettler, M. O.</creatorcontrib><creatorcontrib>Bezshyiko, Ia</creatorcontrib><creatorcontrib>Bhasin, S.</creatorcontrib><creatorcontrib>Bhom, J.</creatorcontrib><creatorcontrib>Bieker, M. S.</creatorcontrib><creatorcontrib>Bifani, S.</creatorcontrib><creatorcontrib>Billoir, P.</creatorcontrib><creatorcontrib>Bizzeti, A.</creatorcontrib><creatorcontrib>Bjørn, M.</creatorcontrib><creatorcontrib>Blago, M. P.</creatorcontrib><creatorcontrib>Blake, T.</creatorcontrib><creatorcontrib>Blanc, F.</creatorcontrib><creatorcontrib>Blusk, S.</creatorcontrib><creatorcontrib>Bobulska, D.</creatorcontrib><creatorcontrib>Bocci, V.</creatorcontrib><creatorcontrib>Boente Garcia, O.</creatorcontrib><creatorcontrib>Boettcher, T.</creatorcontrib><creatorcontrib>Boldyrev, A.</creatorcontrib><creatorcontrib>Bondar, A.</creatorcontrib><creatorcontrib>Bondar, N.</creatorcontrib><creatorcontrib>Borghi, S.</creatorcontrib><creatorcontrib>Borisyak, M.</creatorcontrib><creatorcontrib>Borsato, M.</creatorcontrib><creatorcontrib>Borsuk, J. T.</creatorcontrib><creatorcontrib>Bowcock, T. J. V.</creatorcontrib><creatorcontrib>Bozzi, C.</creatorcontrib><creatorcontrib>Bradley, M. J.</creatorcontrib><creatorcontrib>Braun, S.</creatorcontrib><creatorcontrib>Brea Rodriguez, A.</creatorcontrib><creatorcontrib>LHCb Collaboration</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Aaij, R.</au><au>Abellán Beteta, C.</au><au>Ackernley, T.</au><au>Adeva, B.</au><au>Adinolfi, M.</au><au>Afsharnia, H.</au><au>Aidala, C. A.</au><au>Aiola, S.</au><au>Ajaltouni, Z.</au><au>Akar, S.</au><au>Albicocco, P.</au><au>Albrecht, J.</au><au>Alessio, F.</au><au>Alexander, M.</au><au>Alfonso Albero, A.</au><au>Alkhazov, G.</au><au>Alvarez Cartelle, P.</au><au>Alves, A. A.</au><au>Amato, S.</au><au>Amhis, Y.</au><au>An, L.</au><au>Anderlini, L.</au><au>Andreassi, G.</au><au>Andreotti, M.</au><au>Archilli, F.</au><au>Arnau Romeu, J.</au><au>Artamonov, A.</au><au>Artuso, M.</au><au>Arzymatov, K.</au><au>Aslanides, E.</au><au>Atzeni, M.</au><au>Audurier, B.</au><au>Bachmann, S.</au><au>Back, J. J.</au><au>Baker, S.</au><au>Balagura, V.</au><au>Baldini, W.</au><au>Baranov, A.</au><au>Barlow, R. J.</au><au>Barsuk, S.</au><au>Barter, W.</au><au>Bartolini, M.</au><au>Baryshnikov, F.</au><au>Bassi, G.</au><au>Batozskaya, V.</au><au>Batsukh, B.</au><au>Battig, A.</au><au>Bay, A.</au><au>Becker, M.</au><au>Bedeschi, F.</au><au>Bediaga, I.</au><au>Beiter, A.</au><au>Bel, L. J.</au><au>Belavin, V.</au><au>Belin, S.</au><au>Bellee, V.</au><au>Belous, K.</au><au>Belyaev, I.</au><au>Bencivenni, G.</au><au>Ben-Haim, E.</au><au>Benson, S.</au><au>Beranek, S.</au><au>Berezhnoy, A.</au><au>Bernet, R.</au><au>Berninghoff, D.</au><au>Bernstein, H. C.</au><au>Bertella, C.</au><au>Bertholet, E.</au><au>Bertolin, A.</au><au>Betancourt, C.</au><au>Betti, F.</au><au>Bettler, M. O.</au><au>Bezshyiko, Ia</au><au>Bhasin, S.</au><au>Bhom, J.</au><au>Bieker, M. S.</au><au>Bifani, S.</au><au>Billoir, P.</au><au>Bizzeti, A.</au><au>Bjørn, M.</au><au>Blago, M. P.</au><au>Blake, T.</au><au>Blanc, F.</au><au>Blusk, S.</au><au>Bobulska, D.</au><au>Bocci, V.</au><au>Boente Garcia, O.</au><au>Boettcher, T.</au><au>Boldyrev, A.</au><au>Bondar, A.</au><au>Bondar, N.</au><au>Borghi, S.</au><au>Borisyak, M.</au><au>Borsato, M.</au><au>Borsuk, J. T.</au><au>Bowcock, T. J. V.</au><au>Bozzi, C.</au><au>Bradley, M. J.</au><au>Braun, S.</au><au>Brea Rodriguez, A.</au><aucorp>LHCb Collaboration</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>First Observation of Excited Ω b − States</atitle><jtitle>Physical review letters</jtitle><date>2020-02-25</date><risdate>2020</risdate><volume>124</volume><issue>8</issue><spage>1</spage><pages>1-</pages><artnum>082002</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>We report four narrow peaks in the Ξb0K− mass spectrum obtained using pp collisions at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 recorded by the LHCb experiment. Referring to these states by their mass, the mass values are m[Ωb(6316)−]=6315.64±0.31±0.07±0.50 MeV, m[Ωb(6330)−]=6330.30±0.28±0.07±0.50 MeV, m[Ωb(6340)−]=6339.71±0.26±0.05±0.50 MeV, m[Ωb(6350)−]=6349.88±0.35±0.05±0.50 MeV, where the uncertainties are statistical, systematic, and the last is due to the knowledge of the Ξb0 mass. The natural widths of the three lower mass states are consistent with zero, and the 90% confidence-level upper limits are determined to be Γ[Ωb(6316)−]<2.8 MeV, Γ[Ωb(6330)−]<3.1 MeV and Γ[Ωb(6340)−]<1.5 MeV. The natural width of the Ωb(6350)− peak is 1.4−0.8+1.0±0.1 MeV, which is 2.5σ from zero and corresponds to an upper limit of 2.8 MeV. The peaks have local significances ranging from 3.6σ to 7.2σ. After accounting for the look-elsewhere effect, the significances of the Ωb(6316)− and Ωb(6330)− peaks are reduced to 2.1σ and 2.6σ, respectively, while the two higher mass peaks exceed 5σ. The observed peaks are consistent with expectations for excited Ωb− resonances.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevLett.124.082002</doi><orcidid>https://orcid.org/0000-0001-9170-684X</orcidid><orcidid>https://orcid.org/0000-0001-7194-7566</orcidid><orcidid>https://orcid.org/0000-0001-7176-2692</orcidid><orcidid>https://orcid.org/0000-0002-5732-4343</orcidid><orcidid>https://orcid.org/0000-0003-1015-9560</orcidid><orcidid>https://orcid.org/0000-0002-0656-9033</orcidid><orcidid>https://orcid.org/0000-0002-4111-0797</orcidid><orcidid>https://orcid.org/0000-0001-9777-881X</orcidid><orcidid>https://orcid.org/0000-0001-9341-8083</orcidid><orcidid>https://orcid.org/0000-0002-3411-989X</orcidid><orcidid>https://orcid.org/0000-0001-9905-8031</orcidid><orcidid>https://orcid.org/0000-0002-1345-8163</orcidid><orcidid>https://orcid.org/0000-0002-6587-4695</orcidid><orcidid>https://orcid.org/0000-0001-9762-5821</orcidid><orcidid>https://orcid.org/000000019170684X</orcidid></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0031-9007 |
ispartof | Physical review letters, 2020-02, Vol.124 (8), p.1, Article 082002 |
issn | 0031-9007 1079-7114 |
language | eng |
recordid | cdi_osti_scitechconnect_1601705 |
source | American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list) |
subjects | Confidence High Energy Physics - Experiment High Energy Physics - Phenomenology Large Hadron Collider Luminosity Physics |
title | First Observation of Excited Ω b − States |
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