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Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Ali, S et al (show 787 more authors) , Alkhazov, G, Cartelle, P Alvarez, Jr, Alves AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d'Argent, P, Romeu, J Arnau, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Baryshnikov, F, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, van Beuzekom, M, Bershyiko, Ia, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, 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Williams, M, Williams, T, Wilson, FF, Wimberley, J, Winn, M, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wyllie, K, Xie, Y, Xu, M, Xu, Q, Xu, Z, Xu, Z, Yang, Z, Yang, Z, Yao, Y, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zheng, Y, Zhu, X, Zhukov, V, Zonneveld, JB, Zucchelli, S and Collaboration, LHCb
(2018)
A measurement of the CP asymmetry difference between Lambda(+)(C) -> pK(-)K(+) and p pi(-)pi(+) decays.
JOURNAL OF HIGH ENERGY PHYSICS, 03 (3).
182-.
Abstract
The difference between the $CP$ asymmetries in the decays $\varLambda_{c}^{+}
\to pK^{-}K^{+}$ and $\varLambda_{c}^{+} \to p\pi^{-}\pi^{+}$ is presented.
Proton-proton collision data taken at centre-of-mass energies of $7$ and
$8\,\mathrm{TeV}$ collected by the LHCb detector in 2011 and 2012 are used,
corresponding to an integrated luminosity of $3\,\mathrm{fb}^{-1}$. The
$\varLambda_{c}^{+}$ candidates are reconstructed as part of the
$\varLambda_{b}^{0} \to \varLambda_{c}^{+}\mu^{-}X$ decay chain. In order to
maximize the cancellation of production and detection asymmetries in the
difference, the final-state kinematic distributions of the two samples are
aligned by applying phase-space-dependent weights to the $\varLambda_{c}^{+}
\to p\pi^{-}\pi^{+}$ sample. This alters the definition of the integrated $CP$
asymmetry to $A_{CP}^{\text{wgt}}(p\pi^{-}\pi^{+})$. Both samples are corrected
for reconstruction and selection efficiencies across the five-dimensional
$\varLambda_{c}^{+}$ decay phase space. The difference in $CP$ asymmetries is
found to be \begin{align*}
\Delta{A^{\text{wgt}}_{CP}} &= A_{CP}(pK^{-}K^{+}) -
A_{CP}^{\text{wgt}}(p\pi^{-}\pi^{+})\\
&= (0.30 \pm 0.91 \pm 0.61)\,\%, \end{align*} where the first uncertainty is
statistical and the second is systematic.
Item Type: |
Article
|
Additional Information: |
All figures and tables, along with any supplementary material and
additional information, are available at
https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-044.html |
Uncontrolled Keywords: |
Charm physics, CP violation, Flavor physics, Hadron-Hadron scattering (experiments) |
Depositing User: |
Symplectic Admin
|
Date Deposited: |
13 Aug 2018 06:43 |
Last Modified: |
19 Jan 2023 01:28 |
DOI: |
10.1007/JHEP03(2018)182 |
Related URLs: |
|
URI: |
https://livrepository.liverpool.ac.uk/id/eprint/3024858 |