Observation of the 1P1 state of charmonium

T. A. Armstrong; D. Bettoni; V. Bharadwaj; C. Biino; G. Borreani; D. Broemmelsiek; A. Buzzo; R. Calabrese; A. Ceccucci; R. Cester; M. Church; P. Dalpiaz; P. F. Dalpiaz; R. Dibenedetto; D. Dimitroyannis; M. G. Fabbri; J. Fast; A. Gianoli; C. M. Ginsburg; K. Gollwitzer; A. Hahn; M. Hasan; S. Hsueh; R. Lewis; E. Luppi; M. Macrí; A. M. Majewska; M. Mandelkern; F. Marchetto; M. Marinelli; J. Marques; W. Marsh; M. Martini; M. Masuzawa; E. Menichetti; A. Migliori; R. Mussa; S. Palestini; M. Pallavicini; N. Pastrone; C. Patrignani; J. Peoples; L. Pesando; F. Petrucci; M. G. Pia; S. Pordes; P. Rapidis; R. Ray; J. Reid; G. Rinaudo; B. Roccuzzo; J. Rosen; A. Santroni; M. Sarmiento; M. Savrie; A. Scalisi; J. Schultz; K. K. Seth; A. Smith; G. A. Smith; M. Sozzi; S. Trokenheim; M. F. Weber; S. Werkema; Y. Zhang; J. Zhao; G. Zioulas

doi:10.1103/PhysRevLett.69.2337

Observation of the 1P1 state of charmonium

T. A. Armstrong^*, D. Bettoni, V. Bharadwaj, C. Biino, G. Borreani, D. Broemmelsiek, A. Buzzo, R. Calabrese, A. Ceccucci, R. Cester, M. Church, P. Dalpiaz, P. F. Dalpiaz, R. Dibenedetto, D. Dimitroyannis, M. G. Fabbri, J. Fast, A. Gianoli, C. M. Ginsburg, K. GollwitzerA. Hahn, M. Hasan, S. Hsueh, R. Lewis, E. Luppi, M. Macrí, A. M. Majewska, M. Mandelkern, F. Marchetto, M. Marinelli, J. Marques, W. Marsh, M. Martini, M. Masuzawa, E. Menichetti, A. Migliori, R. Mussa, S. Palestini, M. Pallavicini, N. Pastrone, C. Patrignani, J. Peoples, L. Pesando, F. Petrucci, M. G. Pia, S. Pordes, P. Rapidis, R. Ray, J. Reid, G. Rinaudo, B. Roccuzzo, J. Rosen, A. Santroni, M. Sarmiento, M. Savrie, A. Scalisi, J. Schultz, K. K. Seth, A. Smith, G. A. Smith, M. Sozzi, S. Trokenheim, M. F. Weber, S. Werkema, Y. Zhang, J. Zhao, G. Zioulas

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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Abstract

We have performed a search for the 1P1 state of charmonium resonantly formed in pp annihilations, close to the center of gravity of the 3PJ states. We report results from the study of the J/0 and J/+2 final states. We have observed a statistically significant enhancement in the p+pJ/+0 cross section at s 3526.2 MeV. This enhancement has the characteristics of a narrow resonance of mass, total width, and production cross section consistent with what is expected for the 1P1 state. In our search we have found no candidates for the reactions p+pJ/+0+0 and p+pJ/+++-.

Original language	English (US)
Pages (from-to)	2337-2340
Number of pages	4
Journal	Physical review letters
Volume	69
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.69.2337
State	Published - 1992

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.69.2337

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Armstrong, T. A., Bettoni, D., Bharadwaj, V., Biino, C., Borreani, G., Broemmelsiek, D., Buzzo, A., Calabrese, R., Ceccucci, A., Cester, R., Church, M., Dalpiaz, P., Dalpiaz, P. F., Dibenedetto, R., Dimitroyannis, D., Fabbri, M. G., Fast, J., Gianoli, A., Ginsburg, C. M., ... Zioulas, G. (1992). Observation of the 1P1 state of charmonium. Physical review letters, 69(16), 2337-2340. https://doi.org/10.1103/PhysRevLett.69.2337

@article{41ac2db296994e4e8337ec65a02fa70b,

title = "Observation of the 1P1 state of charmonium",

abstract = "We have performed a search for the 1P1 state of charmonium resonantly formed in pp annihilations, close to the center of gravity of the 3PJ states. We report results from the study of the J/0 and J/+2 final states. We have observed a statistically significant enhancement in the p+pJ/+0 cross section at s 3526.2 MeV. This enhancement has the characteristics of a narrow resonance of mass, total width, and production cross section consistent with what is expected for the 1P1 state. In our search we have found no candidates for the reactions p+pJ/+0+0 and p+pJ/+++-.",

author = "Armstrong, {T. A.} and D. Bettoni and V. Bharadwaj and C. Biino and G. Borreani and D. Broemmelsiek and A. Buzzo and R. Calabrese and A. Ceccucci and R. Cester and M. Church and P. Dalpiaz and Dalpiaz, {P. F.} and R. Dibenedetto and D. Dimitroyannis and Fabbri, {M. G.} and J. Fast and A. Gianoli and Ginsburg, {C. M.} and K. Gollwitzer and A. Hahn and M. Hasan and S. Hsueh and R. Lewis and E. Luppi and M. Macr{\'i} and Majewska, {A. M.} and M. Mandelkern and F. Marchetto and M. Marinelli and J. Marques and W. Marsh and M. Martini and M. Masuzawa and E. Menichetti and A. Migliori and R. Mussa and S. Palestini and M. Pallavicini and N. Pastrone and C. Patrignani and J. Peoples and L. Pesando and F. Petrucci and Pia, {M. G.} and S. Pordes and P. Rapidis and R. Ray and J. Reid and G. Rinaudo and B. Roccuzzo and J. Rosen and A. Santroni and M. Sarmiento and M. Savrie and A. Scalisi and J. Schultz and Seth, {K. K.} and A. Smith and Smith, {G. A.} and M. Sozzi and S. Trokenheim and Weber, {M. F.} and S. Werkema and Y. Zhang and J. Zhao and G. Zioulas",

year = "1992",

doi = "10.1103/PhysRevLett.69.2337",

language = "English (US)",

volume = "69",

pages = "2337--2340",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

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Armstrong, TA, Bettoni, D, Bharadwaj, V, Biino, C, Borreani, G, Broemmelsiek, D, Buzzo, A, Calabrese, R, Ceccucci, A, Cester, R, Church, M, Dalpiaz, P, Dalpiaz, PF, Dibenedetto, R, Dimitroyannis, D, Fabbri, MG, Fast, J, Gianoli, A, Ginsburg, CM, Gollwitzer, K, Hahn, A, Hasan, M, Hsueh, S, Lewis, R, Luppi, E, Macrí, M, Majewska, AM, Mandelkern, M, Marchetto, F, Marinelli, M, Marques, J, Marsh, W, Martini, M, Masuzawa, M, Menichetti, E, Migliori, A, Mussa, R, Palestini, S, Pallavicini, M, Pastrone, N, Patrignani, C, Peoples, J, Pesando, L, Petrucci, F, Pia, MG, Pordes, S, Rapidis, P, Ray, R, Reid, J, Rinaudo, G, Roccuzzo, B, Rosen, J, Santroni, A, Sarmiento, M, Savrie, M, Scalisi, A, Schultz, J, Seth, KK, Smith, A, Smith, GA, Sozzi, M, Trokenheim, S, Weber, MF, Werkema, S, Zhang, Y, Zhao, J & Zioulas, G 1992, 'Observation of the 1P1 state of charmonium', Physical review letters, vol. 69, no. 16, pp. 2337-2340. https://doi.org/10.1103/PhysRevLett.69.2337

TY - JOUR

T1 - Observation of the 1P1 state of charmonium

AU - Armstrong, T. A.

AU - Bettoni, D.

AU - Bharadwaj, V.

AU - Biino, C.

AU - Borreani, G.

AU - Broemmelsiek, D.

AU - Buzzo, A.

AU - Calabrese, R.

AU - Ceccucci, A.

AU - Cester, R.

AU - Church, M.

AU - Dalpiaz, P.

AU - Dalpiaz, P. F.

AU - Dibenedetto, R.

AU - Dimitroyannis, D.

AU - Fabbri, M. G.

AU - Fast, J.

AU - Gianoli, A.

AU - Ginsburg, C. M.

AU - Gollwitzer, K.

AU - Hahn, A.

AU - Hasan, M.

AU - Hsueh, S.

AU - Lewis, R.

AU - Luppi, E.

AU - Macrí, M.

AU - Majewska, A. M.

AU - Mandelkern, M.

AU - Marchetto, F.

AU - Marinelli, M.

AU - Marques, J.

AU - Marsh, W.

AU - Martini, M.

AU - Masuzawa, M.

AU - Menichetti, E.

AU - Migliori, A.

AU - Mussa, R.

AU - Palestini, S.

AU - Pallavicini, M.

AU - Pastrone, N.

AU - Patrignani, C.

AU - Peoples, J.

AU - Pesando, L.

AU - Petrucci, F.

AU - Pia, M. G.

AU - Pordes, S.

AU - Rapidis, P.

AU - Ray, R.

AU - Reid, J.

AU - Rinaudo, G.

AU - Roccuzzo, B.

AU - Rosen, J.

AU - Santroni, A.

AU - Sarmiento, M.

AU - Savrie, M.

AU - Scalisi, A.

AU - Schultz, J.

AU - Seth, K. K.

AU - Smith, A.

AU - Smith, G. A.

AU - Sozzi, M.

AU - Trokenheim, S.

AU - Weber, M. F.

AU - Werkema, S.

AU - Zhang, Y.

AU - Zhao, J.

AU - Zioulas, G.

PY - 1992

Y1 - 1992

N2 - We have performed a search for the 1P1 state of charmonium resonantly formed in pp annihilations, close to the center of gravity of the 3PJ states. We report results from the study of the J/0 and J/+2 final states. We have observed a statistically significant enhancement in the p+pJ/+0 cross section at s 3526.2 MeV. This enhancement has the characteristics of a narrow resonance of mass, total width, and production cross section consistent with what is expected for the 1P1 state. In our search we have found no candidates for the reactions p+pJ/+0+0 and p+pJ/+++-.

AB - We have performed a search for the 1P1 state of charmonium resonantly formed in pp annihilations, close to the center of gravity of the 3PJ states. We report results from the study of the J/0 and J/+2 final states. We have observed a statistically significant enhancement in the p+pJ/+0 cross section at s 3526.2 MeV. This enhancement has the characteristics of a narrow resonance of mass, total width, and production cross section consistent with what is expected for the 1P1 state. In our search we have found no candidates for the reactions p+pJ/+0+0 and p+pJ/+++-.

UR - http://www.scopus.com/inward/record.url?scp=4243792418&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243792418&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.69.2337

DO - 10.1103/PhysRevLett.69.2337

M3 - Article

C2 - 10046459

AN - SCOPUS:4243792418

SN - 0031-9007

VL - 69

SP - 2337

EP - 2340

JO - Physical review letters

JF - Physical review letters

IS - 16

ER -

Observation of the 1P1 state of charmonium

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Observation of the p wave singlet state of charmonium

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Observation of the 1P1 state of charmonium

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Observation of the p wave singlet state of charmonium

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