Details

Autor(en) / Beteiligte

• Aaij, R.
• Adeva, B.
• Adinolfi, M.
• Ajaltouni, Z.
• Akar, S.
• Albrecht, J.
• Alessio, F.
• Alexander, M.
• Ali, S.
• Alkhazov, G.
• Alvarez Cartelle, P.
• Alves Jr, A. A.
• Amato, S.
• Amerio, S.
• Amhis, Y.
• An, L.
• Anderlini, L.
• Andreassi, G.
• Andreotti, M.
• Andrews, J. E.
• Appleby, R. B.
• Archilli, F.
• d'Argent, P.
• Arnau Romeu, J.
• Artamonov, A.
• Artuso, M.
• Aslanides, E.
• Auriemma, G.
• Baalouch, M.
• Babuschkin, I.
• Bachmann, S.
• Back, J. J.
• Badalov, A.
• Baesso, C.
• Baker, S.
• Baldini, W.
• Barlow, R. J.
• Barschel, C.
• Barsuk, S.
• Barter, W.
• Baszczyk, M.
• Batozskaya, V.
• Batsukh, B.
• Battista, V.
• Bay, A.
• Beaucourt, L.
• Beddow, J.
• Bedeschi, F.
• Bediaga, I.
• Bel, L. J.
• Bellee, V.
• Belloli, N.
• Belous, K.
• Belyaev, I.
• Ben-Haim, E.
• Bencivenni, G.
• Benson, S.
• Benton, J.
• Berezhnoy, A.
• Bernet, R.
• Bertolin, A.
• Betancourt, C.
• Betti, F.
• Bettler, M. -O.
• van Beuzekom, M.
• Bezshyiko, Ia
• Bifani, S.
• Billoir, P.
• Bird, T.
• Birnkraut, A.
• Bitadze, A.
• Bizzeti, A.
• Blake, T.
• Blanc, F.
• Blouw, J.
• Blusk, S.
• Bocci, V.
• Boettcher, T.
• Bondar, A.
• Bondar, N.
• Bonivento, W.
• Bordyuzhin, I.
• Borgheresi, A.
• Borghi, S.
• Borisyak, M.
• Borsato, M.
• Bossu, F.
• Boubdir, M.
• Bowcock, T. J. V.
• Bowen, E.
• Bozzi, C.
• Braun, S.
• Britsch, M.
• Britton, T.
• Brodzicka, J.
• Buchanan, E.
• Burr, C.
• Bursche, A.
• Buytaert, J.
• Cadeddu, S.

Titel

Evidence for the two-body charmless baryonic decay $B^+ \to p \bar\Lambda

Ist Teil von

• The journal of high energy physics, 2017-04, Vol.4

Ort / Verlag

Springer Verlag (Germany)

Erscheinungsjahr

2017

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• A search for the rare two-body charmless baryonic decay $B^+ \to p \bar\Lambda$ is performed with $pp$ collision data, corresponding to an integrated luminosity of $3\mbox{\,fb}^{-1}$, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of $B^+ \to p \bar\Lambda$ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the $B^+ \to K^0_{\mathrm S} \pi^+$ decay for normalisation, is \begin{eqnarray} \mathcal{B}(B^+ \to p \bar\Lambda) & = & ( 2.4 \,^{+1.0}_{-0.8} \pm 0.3 ) \times 10^{-7} \,, \nonumber \end{eqnarray} where the first uncertainty is statistical and the second systematic.