Observation of X(3872) production in pp collisions at $\sqrt{s}=7\mbox{~TeV}

Observation of X(3872) production in pp collisions at $\sqrt{s}=7\mbox{~TeV}

Using 34.7 pb −1 of data collected with the LHCb detector, the inclusive production of the X (3872) meson in pp collisions at $\sqrt{s}=7\mbox{~TeV}$ is observed for the first time. Candidates are selected in the X (3872)→ J / ψπ + π − decay mode, and used to measure "Equation missing" whe...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2012-05, Vol.72 (5), p.1-9, Article 1972
Hauptverfasser: Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amhis, Y., Anderson, J., Appleby, R. B., Aquines Gutierrez, O., Archilli, F., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J. J., Bailey, D. S., Balagura, V., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, Th, Bay, A., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P. M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T. J. V., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N. H., Brown, H., Büchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, Ch, Charles, M., Charpentier, Ph, Chiapolini, N., Ciba, K., Cid Vidal, X.
Format: Artikel
Sprache:eng
Schlagworte:
Large Hadron Collider
LHCb Collaboration
Momentum Scale
Systematic Uncertainty
Transverse Momentum
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Using 34.7 pb −1 of data collected with the LHCb detector, the inclusive production of the X (3872) meson in pp collisions at $\sqrt{s}=7\mbox{~TeV}$ is observed for the first time. Candidates are selected in the X (3872)→ J / ψπ + π − decay mode, and used to measure "Equation missing" where σ ( pp → X (3872)+anything) is the inclusive production cross section of X (3872) mesons with rapidity in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/ c . In addition the masses of both the X (3872) and ψ (2 S ) mesons, reconstructed in the J / ψπ + π − final state, are measured to be $$m_{X(3872)} = 3871.95 \pm0.48 \ (\mathrm{stat}) \pm0.12 \ (\mathrm {syst})\ \mathrm{MeV}/c^2 $$ and $$m_{\psi(2S)} = 3686.12\pm0.06 \ (\mathrm{stat}) \pm0.10 \ (\mathrm {syst})\ \mathrm{MeV}/c^2. $$
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-012-1972-7