Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays
Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb[superscript −1]...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Springer-Verlag
2015
|
| Online Access: | http://hdl.handle.net/1721.1/97161 https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
| _version_ | 1811076779115282432 |
|---|---|
| author | Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J |
| author_sort | Counts, Ian Thomas Hunt |
| collection | MIT |
| description | Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb[superscript −1] collected by the LHCb experiment. The D[superscript 0] mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D[superscript 0] or [bar over D][superscript 0]. The asymmetries in effective lifetimes between D[superscript 0] and [bar over D][superscript 0] decays, which are sensitive to indirect CP violation, are determined to be
A[subscript Γ](K[superscript −]K[superscript +]) = (−0.134 ± 0.077[−0.026 over −0.034])%, A[subscript Γ](π[superscript −]π[superscript +]) = (−0.092 ± 0.145[−0.025 over −0.033])%,
where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D[superscript 0] decays. |
| first_indexed | 2024-09-23T10:27:20Z |
| format | Article |
| id | mit-1721.1/97161 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:27:20Z |
| publishDate | 2015 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/971612023-02-26T06:06:49Z Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Counts, Ian Thomas Hunt Ilten, Philip James Williams, Michael Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb[superscript −1] collected by the LHCb experiment. The D[superscript 0] mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D[superscript 0] or [bar over D][superscript 0]. The asymmetries in effective lifetimes between D[superscript 0] and [bar over D][superscript 0] decays, which are sensitive to indirect CP violation, are determined to be A[subscript Γ](K[superscript −]K[superscript +]) = (−0.134 ± 0.077[−0.026 over −0.034])%, A[subscript Γ](π[superscript −]π[superscript +]) = (−0.092 ± 0.145[−0.025 over −0.033])%, where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D[superscript 0] decays. National Science Foundation (U.S.) 2015-06-02T18:34:33Z 2015-06-02T18:34:33Z 2015-04 2015-01 Article http://purl.org/eprint/type/JournalArticle 1029-8479 1126-6708 http://hdl.handle.net/1721.1/97161 Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Measurement of Indirect CP Asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] Decays Using Semileptonic B Decays.” J. High Energ. Phys. 2015, no. 4 (April 2015). © 2015 CERN, for the benefit of the LHCb Collaboration https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 en_US http://dx.doi.org/10.1007/jhep04(2015)043 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays |
| title | Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays |
| title_full | Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays |
| title_fullStr | Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays |
| title_full_unstemmed | Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays |
| title_short | Measurement of indirect CP asymmetries in D[superscript 0] → K[superscript −] K[superscript +] and D[superscript 0] → π[superscript −] π[superscript +] decays using semileptonic B decays |
| title_sort | measurement of indirect cp asymmetries in d superscript 0 k superscript k superscript and d superscript 0 π superscript π superscript decays using semileptonic b decays |
| url | http://hdl.handle.net/1721.1/97161 https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
| work_keys_str_mv | AT countsianthomashunt measurementofindirectcpasymmetriesindsuperscript0ksuperscriptksuperscriptanddsuperscript0psuperscriptpsuperscriptdecaysusingsemileptonicbdecays AT williamsmichael measurementofindirectcpasymmetriesindsuperscript0ksuperscriptksuperscriptanddsuperscript0psuperscriptpsuperscriptdecaysusingsemileptonicbdecays AT iltenphilipj measurementofindirectcpasymmetriesindsuperscript0ksuperscriptksuperscriptanddsuperscript0psuperscriptpsuperscriptdecaysusingsemileptonicbdecays |