Observation of η′c production in γγ fusion at CLEO -: art. no. 142001

被引：101

作者：

Asner, DM ^{[1
]}

Dytman, SA

Mehrabyan, S

Mueller, JA

Nam, S

Savinov, V

Huang, GS

Miller, DH

Pavlunin, V

Sanghi, B

Shibata, EI

Shipsey, IPJ

Adams, GS

Chasse, M

Cummings, JP

Danko, I

Napolitano, J

Cronin-Hennessy, D

Park, CS

Park, W

Thayer, JB

Thorndike, EH

Coan, TE

Gao, YS

Liu, F

Stroynowski, R

Artuso, M

Boulahouache, C

Blusk, S

Butt, J

Dambasuren, E

Dorjkhaidav, O

Haynes, J

Menaa, N

Mountain, R

Muramatsu, H

Nandakumar, R

Redjimi, R

Sia, R

Skwarnicki, T

Stone, S

Wang, JC

Zhang, K

Mahmood, AH

Csorna, SE

Bonvicini, G

Cinabro, D

Dubrovin, M

Bornheim, A

Lipeles, E

机构：

[1] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[2] Purdue Univ, W Lafayette, IN 47907 USA

[3] Rensselaer Polytech Inst, Troy, NY 12180 USA

[4] Univ Rochester, Rochester, NY 14627 USA

[5] So Methodist Univ, Dallas, TX 75275 USA

[6] Syracuse Univ, Syracuse, NY 13244 USA

[7] Univ Texas Pan Amer, Edinburg, TX 78539 USA

[8] Vanderbilt Univ, Nashville, TN 37235 USA

[9] Wayne State Univ, Detroit, MI 48202 USA

[10] CALTECH, Pasadena, CA 91125 USA

[11] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[12] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[13] Cornell Univ, Ithaca, NY 14853 USA

[14] Univ Florida, Gainesville, FL 32611 USA

[15] Univ Illinois, Urbana, IL 61801 USA

[16] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[17] Inst Particle Phys, Toronto, ON, Canada

[18] Univ Kansas, Lawrence, KS 66045 USA

[19] Univ Minnesota, Minneapolis, MN 55455 USA

[20] Northwestern Univ, Evanston, IL 60208 USA

[21] Ohio State Univ, Columbus, OH 43210 USA

[22] Univ Oklahoma, Norman, OK 73019 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 14期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.142001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the observation of the eta(c)'(2(1)S(0)), the radial excitation of the eta(c)(1(1)S(0)) ground state of charmonium, in the two-photon fusion reaction gammagamma --> eta(c)' --> (KsK+/-)-K-0 pi(-/+) in 13.6 fb(-1) of CLEO II/ILV data and 13.1 fb(-1) of CLEO III data. We obtain M(eta(c)') = 3642.9 +/- 3.1 (stat) +/- 1.5(syst) MeV and M(eta(c)) = 2981.8 +/- 1.3(stat) +/- 1.5(syst) MeV. The corresponding values of hyperfine splittings between S-1(0) and S-3(1) states are DeltaM(hf)(1S) = 115.1 +/- 2.0 MeV and DeltaM(hf)(2S) = 43.1 +/- 3.4 MeV. Assuming that the eta(c) and eta(c)' have equal branching fractions to K(s)Kpi, we obtain Gamma(gammagamma)(eta(c)') = 1.3 +/- 0.6 keV.

引用

页码：142001 / 1

页数：5

共 23 条

[1]

Abe K, 2002, PHYS REV LETT, V89, DOI [10.1103/PhysRevLett.89.142001, 10.1103/PhysRevLett.89.122001]

[2] A search for η′c production in photon-photon fusion at LEP [J].

Abreu, P ;

Adam, W ;

Adye, T ;

Adzic, P ;

Alekseev, GD ;

Alemany, R ;

Allport, PP ;

Almehed, S ;

Amaldi, U ;

Amato, S ;

Anassontzis, EG ;

Andersson, P ;

Andreazza, A ;

Andringa, S ;

Antilogus, P ;

Apel, WD ;

Arnoud, Y ;

Åsman, B ;

Augustin, JE ;

Augustinus, A ;

Baillon, P ;

Bambade, P ;

Barao, F ;

Barbiellini, G ;

Barbier, R ;

Bardin, DY ;

Barker, G ;

Baroncelli, A ;

Battaglia, M ;

Baubillier, M ;

Becks, KH ;

Begalli, M ;

Beilliere, P ;

Belokopytov, Y ;

Belous, K ;

Benvenuti, AC ;

Berat, C ;

Berggren, M ;

Bertini, D ;

Bertrand, D ;

Besancon, M ;

Bianchi, F ;

Bigi, M ;

Bilenky, MS ;

Bizouard, MA ;

Bloch, D ;

Blom, HM ;

Bonesini, M ;

Bonivento, W ;

Boonekamp, M .

PHYSICS LETTERS B, 1998, 441 (1-4) :479-490

[3] Formation of the ηc in two-photon collisions at LEP [J].

Acciarri, M ;

Achard, P ;

Adriani, O ;

Aguilar-Benitez, M ;

Alcaraz, J ;

Alemanni, G ;

Allaby, J ;

Aloisio, A ;

Alviggi, MG ;

Ambrosi, G ;

Anderhub, H ;

Andreev, VP ;

Angelescu, T ;

Anselmo, F ;

Arefiev, A ;

Azemoon, T ;

Aziz, T ;

Bagnaia, P ;

Baksay, L ;

Balandras, A ;

Ball, RC ;

Banerjee, S ;

Barczyk, A ;

Barillère, R ;

Barone, L ;

Bartalini, P ;

Basile, M ;

Battiston, R ;

Bay, A ;

Becattini, F ;

Becker, U ;

Behner, F ;

Berdugo, J ;

Berges, P ;

Bertucci, B ;

Betev, BL ;

Bhattacharya, S ;

Biasini, M ;

Biland, A ;

Blaising, JJ ;

Blyth, SC ;

Bobbink, GJ ;

Böhm, A ;

Boldizsar, L ;

Borgia, B ;

Bourilkov, D ;

Bourquin, M ;

Braccini, S ;

Branson, JG .

PHYSICS LETTERS B, 1999, 461 (1-2) :155-166

[4]

Ambrogiani M, 2001, PHYS REV D, V64, DOI 10.1103/PhysRevD.64.052003

[5] STUDY OF THE ETA(C)(1 S-1(O)) STATE OF CHARMONIUM FORMED IN PP ANNIHILATIONS AND A SEARCH FOR THE ETA'(C)(2 S-1(O)) [J].

ARMSTRONG, TA ;

BETTONI, D ;

BHARADWAJ, V ;

BIINO, C ;

BLANFORD, G ;

BORREANI, G ;

BROEMMELSIEK, D ;

BUZZO, A ;

CALABRESE, R ;

CECCUCCI, A ;

CESTER, R ;

CHURCH, M ;

DALPIAZ, P ;

DALPIAZ, PF ;

DIMITROYANNIS, D ;

FABBRI, M ;

FAST, J ;

GIANOLI, A ;

GINSBURG, CM ;

GOLLWITZER, K ;

GOVI, G ;

HAHN, A ;

HASAN, M ;

HSUEH, S ;

LEWIS, R ;

LUPPI, E ;

MACRI, M ;

MAJEWSKA, AM ;

MANDELKERN, M ;

MARCHETTO, F ;

MARINELLI, M ;

MARQUES, KJ ;

MARSH, W ;

MARTINI, M ;

MASUZAWA, M ;

MENICHETTI, E ;

MIGLIORI, A ;

MUSSA, R ;

PALESTINI, S ;

PALLAVICINI, M ;

PASSAGGIO, S ;

PASTRONE, N ;

PATRIGNANI, C ;

PEOPLES, J ;

PETRUCCI, F ;

PIA, MG ;

PORDES, S ;

RAPIDIS, P ;

RAY, R ;

REID, J .

PHYSICAL REVIEW D, 1995, 52 (09) :4839-4854

[6] Construction, pattern recognition and performance of the CLEO IIILiF-TEA RICH detector [J].

Artuso, M ;

Ayad, R ;

Bukin, K ;

Efimov, A ;

Boulahouache, C ;

Dambasuren, E ;

Kopp, S ;

Mountain, R ;

Majumder, G ;

Schuh, S ;

Skwarnicki, T ;

Stone, S ;

Viehhauser, G ;

Wang, JC ;

Coan, T ;

Fadeyev, V ;

Volobouev, I ;

Ye, J ;

Anderson, S ;

Kubota, Y ;

Smith, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 502 (01) :91-100

[7] Complete O(v(2)) corrections to the static interquark potential from SU(3) gauge theory [J].

Bali, GS ;

Schilling, K ;

Wachter, A .

PHYSICAL REVIEW D, 1997, 56 (05) :2566-2589

[8] Prospects for detecting an eta'(c) in two-photon processes [J].

Barnes, T ;

Browder, TE ;

Tuan, SF .

PHYSICS LETTERS B, 1996, 385 (1-4) :391-394

[9] Measurements of the mass, total width, and two-photon partial width of the ηc meson [J].

Brandenburg, G ;

Ershov, A ;

Gao, YS ;

Kim, DYJ ;

Wilson, R ;

Browder, TE ;

Li, Y ;

Rodriguez, JL ;

Yamamoto, H ;

Bergfeld, T ;

Eisenstein, BI ;

Ernst, J ;

Gladding, GE ;

Gollin, GD ;

Hans, RM ;

Johnson, E ;

Karliner, I ;

Marsh, MA ;

Palmer, M ;

Plager, C ;

Sedlack, C ;

Selen, M ;

Thaler, JJ ;

Williams, J ;

Edwards, KW ;

Janicek, R ;

Patel, PM ;

Sadoff, AJ ;

Ammar, R ;

Bean, A ;

Besson, D ;

Davis, R ;

Kwak, N ;

Zhao, X ;

Anderson, S ;

Frolov, VV ;

Kubota, Y ;

Lee, SJ ;

Mahapatra, R ;

O'Neill, JJ ;

Poling, R ;

Riehle, T ;

Smith, A ;

Stepaniak, CJ ;

Urheim, J ;

Ahmed, S ;

Alam, MS ;

Athar, SB ;

Jian, L ;

Ling, L .

PHYSICAL REVIEW LETTERS, 2000, 85 (15) :3095-3099

[10]

BRUN R, 1987, DDEE841 CERN

← 1 2 3 →