Measurement of $CP$ violation in $B^{0}\rightarrow D^{\mp}\pi^{\pm}$ decays

• Published in: The journal of high energy physics Vol. 6
• Main Authors: Aaij, Roel, Adeva, Bernardo, Adinolfi, Marco, Ajaltouni, Ziad, Akar, Simon, Albicocco, Pietro, 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, Atzeni, Michele, Auriemma, Giulio, Bachmann, Sebastian, Back, John, Baker, Sophie, Balagura, Vladislav, Baldini, Wander, Baranov, Alexander, Barlow, Roger, Barsuk, Sergey, Barter, William, Baryshnikov, Fedor, Batozskaya, Varvara, Battista, Vincenzo, Bay, Aurelio, 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, Bizzeti, Andrea, Bjørn, Mikkel, Blake, Thomas, Blanc, Frederic, Blusk, Steven, Bocci, Valerio, Boente Garcia, Oscar, Boettcher, Thomas, Bondar, Alexander, Bondar, Nikolay, Borghi, Silvia, Borisyak, Maxim, Borsato, Martino, Bossu, Francesco, Boubdir, Meriem, Bowcock, Themistocles, Bowen, Espen Eie, Bozzi, Concezio, Braun, Svende, Brodski, Michael, Brodzicka, Jolanta, Brundu, Davide, Buchanan, Emma, Burr, Christopher, Bursche, Albert, Buytaert, Jan, Byczynski, Wiktor, Cadeddu, Sandro, Cai, Hao
• Format: Journal Article
• Language: English
• Published: Springer 09-05-2018
• Subjects: High Energy Physics - Experiment; Physics; experimental results; S042BGA; CP violation; Hadron-Hadron scattering (experiments); Flavor physics; CERN LHC Coll; LHC-B; CP: violation; S042A06; 8000 GeV-cms; S042A07; B physics; S041GGM; CKM angle gamma; B0: hadronic decay; B0 > > D- pi; B0 > > D+ pi; asymmetry: CP; p p: scattering; p p: colliding beams; 7000 GeV-cms
• ISSN: 1126-6708; 1029-8479
• DOI: 10.1007/JHEP06(2018)084

A measurement of the CP asymmetries S$_{f}$ and $ {S}_{\overline{f}} $ in B$^{0}$ → D$^{∓}$π$^{±}$ decays is reported. The decays are reconstructed in a dataset collected with the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3.0 fb$^{−1}$. The CP asymmetries are measured to be S$_{f}$ = 0.058 ± 0.020(stat) ± 0.011(syst) and $ {S}_{\overline{f}}=0.038\pm 0.020\left(\mathrm{stat}\right)\pm 0.007\left(\mathrm{syst}\right) $ . These results are in agreement with, and more precise than, previous determinations. They are used to constrain angles of the unitarity triangle, | sin (2β + γ) | and γ, to intervals that are consistent with the current world-average values.