UNI-MB - logo
UMNIK - logo
 
E-viri
Celotno besedilo
Recenzirano Odprti dostop
  • Search for CP violation in the phase space of D 0 → K S 0 K ± π ∓ $$ {D}^0\to {K}_S^0{K}^{\pm }{\pi}^{\mp } $$ decays with the energy test
    M. Alexander; Z. Aliouche; R. Amalric; S. Arguedas Cuendis; A. Battig; M. Birch; A. Bitadze; S. A. Bouchiba; A. Brossa Gonzalo; A. Buonaura; C. Burr; A. Butkevich; L. Carus; S. Cesare; C. A. Chavez Barajas; S. Chernyshenko; X. Cid Vidal; G. Corti; D. C. Craik; S. De Capua; U. De Freitas Carneiro Da Graca; A. C. dos Reis; J. M. Durham; E. Eckstein; E. Ejopu; Y. Fan; B. Fang; K. M. Fischer; E. Gabriel; A. Gallas Torreira; S. Gambetta; M. Gandelman; P. Gironella Gironell; I. V. Gorelov; L. A. Granado Cardoso; C. Gu; N. Harnew; T. Harrison; J. He; L. Henry; S. E. Hollitt; J. Horswill; X. Huang; D. Ilin; H. Jage; A. Jawahery; T. Ketel; B. Khanji; I. Kostiuk; M. Kreps; S. Kretzschmar; M. Lehuraux; P.-R. Li; X. Liang; K. Lynch; M. W. Majewski; G. Mancinelli; E. Maurice; D. A. Milanes; B. Mitreska; T. Mombächer; M. P. Morgenthaler; R. Mountain; H. Mu; P. Naik; V. Obraztsov; C. J. G. Onderwater; A. Oyanguren; L. Paolucci; C. Pappenheimer; M. Patel; A. Pellegrino; S. Perazzini; N. Polukhina; R. Quagliani; F. Redi; J. Reich; G. Sarpis; A. Scarabotto; O. Schneider; G. Schwering; V. Shevchenko; R. Skuza; A. Snoch; F. Stagni; P. N. Swallow; G. Tonani; G. Valenti; M. van Veghel; D. Vieira; A. Villa; J. Wang; D. J. White; D. Wiedner; R. Williams; G. Wormser; A. Xu; Z. Yang; M. Zavertyaev; Y. Z. Zhang

    The journal of high energy physics, 03/2024, Letnik: 2024, Številka: 3
    Journal Article

    Abstract A search for CP violation in D 0 → K S 0 K + π − $$ {D}^0\to {K}_S^0{K}^{+}{\pi}^{-} $$ and D 0 → K S 0 K − π + $$ {D}^0\to {K}_S^0{K}^{-}{\pi}^{+} $$ decays is reported. The search is performed using an unbinned model-independent method known as the energy test that probes local CP violation in the phase space of the decays. The data analysed correspond to an integrated luminosity of 5.4 fb −1 collected in proton-proton collisions by the LHCb experiment at a centre-of-mass energy of s $$ \sqrt{s} $$ = 13 TeV, amounting to approximately 950 thousand and 620 thousand signal candidates for the D 0 → K S 0 K − π + $$ {D}^0\to {K}_S^0{K}^{-}{\pi}^{+} $$ and D 0 → K S 0 K + π − $$ {D}^0\to {K}_S^0{K}^{+}{\pi}^{-} $$ modes, respectively. The method is validated using D 0 → K − π + π − π + and D 0 → K S 0 π + π − $$ {D}^0\to {K}_S^0{\pi}^{+}{\pi}^{-} $$ decays, where CP-violating effects are expected to be negligible, and using background-enhanced regions of the signal decays. The results are consistent with CP symmetry in both the D 0 → K S 0 K − π + $$ {D}^0\to {K}_S^0{K}^{-}{\pi}^{+} $$ and the D 0 → K S 0 K + π − $$ {D}^0\to {K}_S^0{K}^{+}{\pi}^{-} $$ decays, with p-values for the hypothesis of no CP violation of 70% and 66%, respectively.

Vnos na polico