Search for Baryon-Number Violating ${\mathrm{\Xi}}_{b}^{0}$ Oscillations

• Published in: Physical review letters Vol. 119; no. 18
• Main Authors: Aaij, Roel, Adeva, Bernardo, Adinolfi, Marco, Ajaltouni, Ziad, Akar, Simon, Albrecht, Johannes, Alessio, Federico, Alexander, Michael, Alfonso Albero, Alejandro, Ali, Suvayu, Alkhazov, Georgy, Alvarez Cartelle, Paula, Alves, Antonio Augusto, Amato, Sandra, Amerio, Silvia, Amhis, Yasmine, An, Liupan, Anderlini, Lucio, Andreassi, Guido, Andreotti, Mirco, Andrews, Jason, Appleby, Robert, Archilli, Flavio, d'Argent, Philippe, Arnau Romeu, Joan, Artamonov, Alexander, Artuso, Marina, Aslanides, Elie, Auriemma, Giulio, Baalouch, Marouen, Babuschkin, Igor, Bachmann, Sebastian, Back, John, Badalov, Alexey, Baesso, Clarissa, Baker, Sophie, Balagura, Vladislav, Baldini, Wander, Baranov, Alexander, Barlow, Roger, Barschel, Colin, Barsuk, Sergey, Barter, William, Baryshnikov, Fedor, Batozskaya, Varvara, Battista, Vincenzo, Bay, Aurelio, Beaucourt, Leo, Beddow, John, Bedeschi, Franco, Bediaga, Ignacio, Beiter, Andrew, Bel, Lennaert, Beliy, Nikita, Bellee, Violaine, Belloli, Nicoletta, Belous, Konstantin, Belyaev, Ivan, Ben-Haim, Eli, Bencivenni, Giovanni, Benson, Sean, Beranek, Sarah, Berezhnoy, Alexander, Bernet, Roland, Berninghoff, Daniel, Bertholet, Emilie, Bertolin, Alessandro, Betancourt, Christopher, Betti, Federico, Bettler, Marc-Olivier, van Beuzekom, Martinus, Bezshyiko, Iaroslava, Bifani, Simone, Billoir, Pierre, Birnkraut, Alex, Bitadze, Alexander, Bizzeti, Andrea, Bjørn, Mikkel, Blake, Thomas, Blanc, Frederic, Blouw, Johan, Blusk, Steven, Bocci, Valerio, Boettcher, Thomas, Bondar, Alexander, Bondar, Nikolay, Bonivento, Walter, Bordyuzhin, Igor, Borgheresi, Alessio, Borghi, Silvia, Borisyak, Maxim, Borsato, Martino, Bossu, Francesco, Boubdir, Meriem, Bowcock, Themistocles, Bowen, Espen Eie, Bozzi, Concezio, Braun, Svende, Britton, Thomas, Brodzicka, Jolanta
• Format: Journal Article
• Language: English
• Published: American Physical Society 2017
• Subjects: High Energy Physics - Experiment; Physics; experimental results; CERN LHC Coll; S070TM0; LHC-B; Xi/b0 > > Xi/c+ pi; baryon number: violation; upper limit; Xi/b: excited state; 7000 GeV-cms8000 GeV-cms; Xi/c+ > > p K- pi; p p: colliding beams; narrow resonance; p p: scattering; Xi/b: hadroproduction; baryon resonance: hadronic decay; (baryon antibaryon): oscillation
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.119.181807

A search for baryon-number violating Ξb0 oscillations is performed with a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 3  fb-1. The baryon number at the moment of production is identified by requiring that the Ξb0 come from the decay of a resonance Ξb*-→Ξb0π- or Ξb′-→Ξb0π-, and the baryon number at the moment of decay is identified from the final state using the decays Ξb0→Ξc+π-,Ξc+→pK-π+. No evidence of baryon-number violation is found, and an upper limit at the 95% confidence level is set on the oscillation rate of ω<0.08  ps-1, where ω is the associated angular frequency.