Abstract
The data sample of Λb0→J/ψpK- decays acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3 fb-1, is inspected for the presence of J/ψp or J/ψK- contributions with minimal assumptions about K-p contributions. It is demonstrated at more than nine standard deviations that Λb0→J/ψpK- decays cannot be described with K-p contributions alone, and that J/ψp contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for Pc+→J/ψp charmonium-pentaquark states in the same data sample.
| Original language | English (US) |
|---|---|
| Article number | 082002 |
| Journal | Physical Review Letters |
| Volume | 117 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 18 2016 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Model-Independent Evidence for J /ψp Contributions to Λb0 →j /ψpK- Decays. / LHCb Collaboration.
In: Physical Review Letters, Vol. 117, No. 8, 082002, 18.08.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Model-Independent Evidence for J /ψp Contributions to Λb0 →j /ψpK- Decays
AU - LHCb Collaboration
AU - Aaij, R.
AU - Abellán Beteta, C.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - Alvarez Cartelle, P.
AU - Alves, A. A.
AU - Amato, S.
AU - Amerio, S.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Andreassi, G.
AU - Andreotti, M.
AU - Andrews, J. E.
AU - Appleby, R. B.
AU - Aquines Gutierrez, O.
AU - Archilli, F.
AU - D'Argent, P.
AU - Artamonov, A.
AU - Artuso, Marina
AU - Aslanides, E.
AU - Auriemma, G.
AU - Baalouch, M.
AU - Bachmann, S.
AU - Back, J. J.
AU - Badalov, A.
AU - Baesso, C.
AU - Baker, S.
AU - Baldini, W.
AU - Barlow, R. J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Batozskaya, V.
AU - Battista, V.
AU - Bay, A.
AU - Beaucourt, L.
AU - Beddow, J.
AU - Bedeschi, F.
AU - Bediaga, I.
AU - Blusk, Steven Roy
AU - Skwarnicki, Tomasz
AU - Stone, Sheldon
PY - 2016/8/18
Y1 - 2016/8/18
N2 - The data sample of Λb0→J/ψpK- decays acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3 fb-1, is inspected for the presence of J/ψp or J/ψK- contributions with minimal assumptions about K-p contributions. It is demonstrated at more than nine standard deviations that Λb0→J/ψpK- decays cannot be described with K-p contributions alone, and that J/ψp contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for Pc+→J/ψp charmonium-pentaquark states in the same data sample.
AB - The data sample of Λb0→J/ψpK- decays acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3 fb-1, is inspected for the presence of J/ψp or J/ψK- contributions with minimal assumptions about K-p contributions. It is demonstrated at more than nine standard deviations that Λb0→J/ψpK- decays cannot be described with K-p contributions alone, and that J/ψp contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for Pc+→J/ψp charmonium-pentaquark states in the same data sample.
UR - http://www.scopus.com/inward/record.url?scp=84984939496&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84984939496&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.117.082002
DO - 10.1103/PhysRevLett.117.082002
M3 - Article
VL - 117
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 8
M1 - 082002
ER -