Resumen
Idioma original | English |
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Publicación | Physical Review Letters |
DOI | |
Estado | Published - 10 feb 2015 |
Publicado de forma externa | Sí |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Observation of two new Ξb- Baryon resonances. / Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A.; Amato, S.; Amerio, S.; Amhis, Y.; An, L.; Anderlini, L.; Anderson, J.; Andreassen, R.; Andreotti, M.; Andrews, J. E.; Appleby, R. B.; Aquines Gutierrez, O.; Archilli, F.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G.; Baalouch, M.; Bachmann, S.; Back, J. J.; Badalov, A.; Baesso, C.; Baldini, W.; Barlow, R. J.; Barschel, C.; Barsuk, S.; Barter, W.; Batozskaya, V.; Battista, V.; Bay, A.; Beaucourt, L.; Beddow, J.; Bedeschi, F.; Bediaga, I.; Belogurov, S.; Belous, K.; Belyaev, I.; Ben-Haim, E.; Bencivenni, G.; Benson, S.; Benton, J.; Berezhnoy, A.; Bernet, R.; Bertolin, A.; Bettler, M. O.; Van Beuzekom, M.; Bien, A.; Bifani, S.; Bird, T.; Bizzeti, A.; Bjørnstad, P. M.; Blake, T.; Blanc, F.; Blouw, J.; Blusk, S.; Bocci, V.; Bondar, A.; Bondar, N.; Bonivento, W.; Borghi, S.; Borgia, A.; Borsato, M.; Bowcock, T. J.V.; Bowen, E.; Bozzi, C.; Brett, D.; Britsch, M.; Britton, T.; Brodzicka, J.; Brook, N. H.; Bursche, A.; Buytaert, J.; Cadeddu, S.; Calabrese, R.; Calvi, M.; Calvo Gomez, M.; Campana, P.; Campora Perez, D.; Capriotti, L.; Carbone, A.; Carboni, G.; Cardinale, R.; Cardini, A.; Carson, L.; Carvalho Akiba, K.
En: Physical Review Letters, 10.02.2015.Resultado de la investigación
TY - JOUR
T1 - Observation of two new Ξb- Baryon resonances
AU - Aaij, R.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Affolder, A.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - Alvarez Cartelle, P.
AU - Alves, A. A.
AU - Amato, S.
AU - Amerio, S.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Anderson, J.
AU - Andreassen, R.
AU - Andreotti, M.
AU - Andrews, J. E.
AU - Appleby, R. B.
AU - Aquines Gutierrez, O.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Baalouch, M.
AU - Bachmann, S.
AU - Back, J. J.
AU - Badalov, A.
AU - Baesso, C.
AU - Baldini, W.
AU - Barlow, R. J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Batozskaya, V.
AU - Battista, V.
AU - Bay, A.
AU - Beaucourt, L.
AU - Beddow, J.
AU - Bedeschi, F.
AU - Bediaga, I.
AU - Belogurov, S.
AU - Belous, K.
AU - Belyaev, I.
AU - Ben-Haim, E.
AU - Bencivenni, G.
AU - Benson, S.
AU - Benton, J.
AU - Berezhnoy, A.
AU - Bernet, R.
AU - Bertolin, A.
AU - Bettler, M. O.
AU - Van Beuzekom, M.
AU - Bien, A.
AU - Bifani, S.
AU - Bird, T.
AU - Bizzeti, A.
AU - Bjørnstad, P. M.
AU - Blake, T.
AU - Blanc, F.
AU - Blouw, J.
AU - Blusk, S.
AU - Bocci, V.
AU - Bondar, A.
AU - Bondar, N.
AU - Bonivento, W.
AU - Borghi, S.
AU - Borgia, A.
AU - Borsato, M.
AU - Bowcock, T. J.V.
AU - Bowen, E.
AU - Bozzi, C.
AU - Brett, D.
AU - Britsch, M.
AU - Britton, T.
AU - Brodzicka, J.
AU - Brook, N. H.
AU - Bursche, A.
AU - Buytaert, J.
AU - Cadeddu, S.
AU - Calabrese, R.
AU - Calvi, M.
AU - Calvo Gomez, M.
AU - Campana, P.
AU - Campora Perez, D.
AU - Capriotti, L.
AU - Carbone, A.
AU - Carboni, G.
AU - Cardinale, R.
AU - Cardini, A.
AU - Carson, L.
AU - Carvalho Akiba, K.
PY - 2015/2/10
Y1 - 2015/2/10
N2 - © 2015 CERN, for the LHCb Collaboration. Two structures are observed close to the kinematic threshold in the Ξb0π- mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0fb-1, recorded by the LHCb experiment. In the quark model, two baryonic resonances with quark content bds are expected in this mass region: the spin-parity JP=(1/2)+ and JP=(3/2)+ states, denoted Ξb′- and Ξb∗-. Interpreting the structures as these resonances, we measure the mass differences and the width of the heavier state to be m(Ξb′-)-m(Ξb0)-m(π-)=3.653±0.018±0.006MeV/c2, m(Ξb∗-)-m(Ξb0)-m(π-)=23.96±0.12±0.06MeV/c2, Γ(Ξb∗-)=1.65±0.31±0.10MeV, where the first and second uncertainties are statistical and systematic, respectively. The width of the lighter state is consistent with zero, and we place an upper limit of Γ(Ξb′-)<0.08MeV at 95% confidence level. Relative production rates of these states are also reported.
AB - © 2015 CERN, for the LHCb Collaboration. Two structures are observed close to the kinematic threshold in the Ξb0π- mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0fb-1, recorded by the LHCb experiment. In the quark model, two baryonic resonances with quark content bds are expected in this mass region: the spin-parity JP=(1/2)+ and JP=(3/2)+ states, denoted Ξb′- and Ξb∗-. Interpreting the structures as these resonances, we measure the mass differences and the width of the heavier state to be m(Ξb′-)-m(Ξb0)-m(π-)=3.653±0.018±0.006MeV/c2, m(Ξb∗-)-m(Ξb0)-m(π-)=23.96±0.12±0.06MeV/c2, Γ(Ξb∗-)=1.65±0.31±0.10MeV, where the first and second uncertainties are statistical and systematic, respectively. The width of the lighter state is consistent with zero, and we place an upper limit of Γ(Ξb′-)<0.08MeV at 95% confidence level. Relative production rates of these states are also reported.
U2 - 10.1103/PhysRevLett.114.062004
DO - 10.1103/PhysRevLett.114.062004
M3 - Article
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
ER -