Measurement of the time-integrated CP asymmetry in D0 → K0 SK0 S decays-Reference-Cited by-同舟云学术

Measurement of the time-integrated CP asymmetry in D0 → K0 SK0 S decays

Published:2018-11 Issue:11 Volume:2018 Page:
ISSN:1029-8479
Container-title:Journal of High Energy Physics
language:en
Short-container-title:J. High Energ. Phys.

Author:

,Aaij R.,Adeva B.,Adinolfi M.,Aidala C. A.,Ajaltouni Z.,Akar S.,Albicocco P.,Albrecht J.,Alessio F.,Alexander M.,Alfonso Albero A.,Ali S.,Alkhazov G.,Alvarez Cartelle P.,Alves 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.,Arzymatov K.,Aslanides E.,Atzeni M.,Bachmann S.,Back J. J.,Baker S.,Balagura V.,Baldini W.,Baranov A.,Barlow R. J.,Barsuk S.,Barter W.,Baryshnikov F.,Batozskaya V.,Batsukh B.,Battista V.,Bay A.,Beddow J.,Bedeschi F.,Bediaga I.,Beiter A.,Bel L. J.,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 M. O.,van Beuzekom M.,Bezshyiko Ia.,Bifani S.,Billoir P.,Birnkraut A.,Bizzeti A.,Bjørn M.,Blake T.,Blanc F.,Blusk S.,Bobulska D.,Bocci V.,Boente Garcia O.,Boettcher T.,Bondar A.,Bondar N.,Borghi S.,Borisyak M.,Borsato M.,Bossu F.,Boubdir M.,Bowcock T. J. V.,Bozzi C.,Braun S.,Brodski M.,Brodzicka J.,Brundu D.,Buchanan E.,Buonaura A.,Burr C.,Bursche A.,Buytaert J.,Byczynski W.,Cadeddu S.,Cai H.,Calabrese R.,Calladine R.,Calvi M.,Calvo Gomez M.,Camboni A.,Campana P.,Campora Perez D. H.,Capriotti L.,Carbone A.,Carboni G.,Cardinale R.,Cardini A.,Carniti P.,Carson L.,Carvalho Akiba K.,Casse G.,Cassina L.,Cattaneo M.,Cavallero G.,Cenci R.,Chamont D.,Chapman M. G.,Charles M.,Charpentier Ph.,Chatzikonstantinidis G.,Chefdeville M.,Chekalina V.,Chen C.,Chen S.,Chitic S.-G.,Chobanova V.,Chrzaszcz M.,Chubykin A.,Ciambrone P.,Cid Vidal X.,Ciezarek G.,Clarke P. E. L.,Clemencic M.,Cliff H. 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S.,Ruf T.,Ruiz Vidal J.,Saborido Silva J. J.,Sagidova N.,Saitta B.,Salustino Guimaraes V.,Sanchez Gras C.,Sanchez Mayordomo C.,Sanmartin Sedes B.,Santacesaria R.,Santamarina Rios C.,Santimaria M.,Santovetti E.,Sarpis G.,Sarti A.,Satriano C.,Satta A.,Saur M.,Savrina D.,Schael S.,Schellenberg M.,Schiller M.,Schindler H.,Schmelling M.,Schmelzer T.,Schmidt B.,Schneider O.,Schopper A.,Schreiner H. F.,Schubiger M.,Schune M. H.,Schwemmer R.,Sciascia B.,Sciubba A.,Semennikov A.,Sepulveda E. S.,Sergi A.,Serra N.,Serrano J.,Sestini L.,Seyfert P.,Shapkin M.,Shcheglov Y.,Shears T.,Shekhtman L.,Shevchenko V.,Shmanin E.,Siddi B. G.,Silva Coutinho R.,Silva de Oliveira L.,Simi G.,Simone S.,Skidmore N.,Skwarnicki T.,Smith E.,Smith I. T.,Smith M.,Soares M.,Soares Lavra l.,Sokoloff M. D.,Soler F. J. P.,Souza De Paula B.,Spaan B.,Spradlin P.,Stagni F.,Stahl M.,Stahl S.,Stefko P.,Stefkova S.,Steinkamp O.,Stemmle S.,Stenyakin O.,Stepanova M.,Stevens H.,Stone S.,Storaci B.,Stracka S.,Stramaglia M. 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Abstract

Abstract A measurement of the time-integrated CP asymmetry in D 0 → K S 0 K S 0 decays is reported. The data correspond to an integrated luminosity of about 2 fb−1 collected in 2015–2016 by the LHCb collaboration in pp collisions at a centre-of-mass energy of 13 TeV. The D 0 candidate is required to originate from a D *+ → D 0 π + decay, allowing the determination of the flavour of the D 0 meson using the pion charge. The D 0 → K + K − decay, which has a well measured CP asymmetry, is used as a calibration channel. The CP asymmetryfor D 0 → K S 0 K S 0 is measured to be

$$ {\mathcal{A}}^{CP}\left({D}^0\to {K}_S^0{K}_S^0\right)=\left(4.3\pm 3.4\pm 1.0\right)\%, $$

A C P D 0 → K S 0 K S 0 = 4.3 ± 3.4 ± 1.0 % , where the first uncertainty is statistical and the second is systematic. This result is combined with the previous LHCb measurement at lower centre-of-mass energies to obtain

$$ {\mathcal{A}}^{CP}\left({D}^0\to {K}_S^0{K}_S^0\right)=\left(2.3\pm 2.8\pm 0.9\right)\%. $$

A C P D 0 → K S 0 K S 0 = 2.3 ± 2.8 ± 0.9 % .

Publisher

Springer Science and Business Media LLC

Subject

Nuclear and High Energy Physics

Link

https://link.springer.com/content/pdf/10.1007/JHEP11(2018)048.pdf

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