Experimental constraints on the spin and parity of the Λc(2880)+

被引：68

作者：

Mizuk, R. ^{[1
]}

Abe, K.

Adachi, I.

Aihara, H.

Anipko, D.

Aulchenko, V.

Aushev, T.

Bakich, A. M.

Balagura, V.

Barberio, E.

Bay, A.

Bedny, I.

Belous, K.

Bitenc, U.

Bizjak, I.

Blyth, S.

Bondar, A.

Bozek, A.

Bracko, M.

Brodzicka, J.

Browder, T. E.

Chang, M.-C.

Chen, A.

Chen, K.-F.

Chen, W. T.

Cheon, B. G.

Chistov, R.

Choi, Y.

Choi, Y. K.

Cole, S.

Dalseno, J.

Danilov, M.

Drutskoy, A.

Eidelman, S.

Epifanov, D.

Fratina, S.

Gabyshev, N.

Garmash, A.

Gershon, T.

Gokhroo, G.

Golob, B.

Ha, H.

Haba, J.

Hayasaka, K.

Hayashii, H.

Hazumi, M.

Heffernan, D.

Hokuue, T.

Hoshi, Y.

Hou, S.

机构：

[1] Inst Theoret & Expt Phys, Moscow 117259, Russia

[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[3] Univ Cincinnati, Cincinnati, OH 45221 USA

[4] Fu Jen Catholic Univ, Dept Phys, Taipei, Taiwan

[5] Grad Univ Adv Studies, Hayama, Japan

[6] Hanyang Univ, Seoul 133791, South Korea

[7] Univ Hawaii, Honolulu, HI 96822 USA

[8] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan

[9] Univ Illinois, Urbana, IL 61801 USA

[10] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[11] Inst High Energy Phys, Vienna, Austria

[12] Inst High Energy Phys, Protvino, Russia

[13] Jozef Stefan Inst, Ljubljana, Slovenia

[14] Kanagawa Univ, Yokohama, Kanagawa, Japan

[15] Kyungpook Natl Univ, Taegu 702701, South Korea

[16] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland

[17] Univ Ljubljana, Ljubljana, Slovenia

[18] Univ Maribor, SLO-2000 Maribor, Slovenia

[19] Univ Melbourne, Parkville, Vic 3052, Australia

[20] Nagoya Univ, Nagoya, Aichi, Japan

[21] Korea Univ, Seoul 136701, South Korea

[22] Nara Womens Univ, Nara 630, Japan

[23] Natl Cent Univ, Chungli 32054, Taiwan

[24] Natl United Univ, Miaoli, Taiwan

[25] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

[26] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[27] Nippon Dent Univ, Niigata, Japan

[28] Niigata Univ, Niigata, Japan

[29] Univ Nova Gorica, Nova Gorica, Slovenia

[30] Osaka Univ, Osaka, Japan

[31] Panjab Univ, Chandigarh 160014, India

[32] Peking Univ, Beijing 100871, Peoples R China

[33] Osaka City Univ, Osaka 558, Japan

[34] Princeton Univ, Princeton, NJ 08544 USA

[35] RIKEN BNL Res Ctr, Upton, NY 11973 USA

[36] Univ Sci & Technol China, Hefei 230026, Peoples R China

[37] Seoul Natl Univ, Seoul, South Korea

[38] Shinshu Univ, Nagano, Japan

[39] Sungkyunkwan Univ, Suwon, South Korea

[40] Univ Sydney, Sydney, NSW 2006, Australia

[41] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[42] Toho Univ, Funabashi, Chiba 274, Japan

[43] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan

[44] Tohoku Univ, Sendai, Miyagi 980, Japan

[45] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[46] Tokyo Metropolitan Univ, Tokyo 158, Japan

[47] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[48] Yonsei Univ, Seoul 120749, South Korea

[49] Tokyo Inst Technol, Tokyo 152, Japan

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.98.262001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the results of several studies of the Lambda(+)(c)pi(+)pi X- final state in continuum e(+)e(-) annihilation data collected by the Belle detector. An analysis of angular distributions in Lambda(c)(2880)(+)->Sigma(c)(2455)(0,++)pi(+,-) decays strongly favors a Lambda(c)(2880)(+) spin assignment of 5/ over 3/2 or 1/2. We find evidence for Lambda(c)(2880)(+)->Sigma(c)(2520)(0,++)pi(+,-) decay and measure the ratio of Lambda(c)(2880)(+) partial widths Gamma(Sigma(c)(2520)pi)/Gamma(Sigma(c)(2455)pi)=0.225 +/- 0.062 +/- 0.025. This value favors the Lambda(c)(2880)(+) spin-parity assignment of 5/2(+) over 5/2(-). We also report the first observation of Lambda(c)(2940)(+)->Sigma(c)(2455)(0,++)pi(+,-) decay and measure Lambda(c)(2880)(+) and Lambda(c)(2940)(+) mass and width parameters. These studies are based on a 553 fb(-1) data sample collected at or near the Upsilon(4S) resonance at the KEKB collider.

引用

页数：6

共 18 条

[1] The Belle detector [J].

Abashian, A ;

Abe, K ;

Abe, R ;

Abe, K ;

Adachi, I ;

Ahn, BS ;

Ahn, HS ;

Aihara, H ;

Akatsu, M ;

Akhmetshin, R ;

Alexander, JP ;

Alimonti, G ;

An, Q ;

Aoki, K ;

Asai, M ;

Asano, Y ;

Aso, T ;

Aulchenko, V ;

Bakich, AM ;

Banas, E ;

Behari, S ;

Behera, PK ;

Beiline, D ;

Bondar, A ;

Bozek, A ;

Browder, TE ;

Casey, BCK ;

Chang, P ;

Chang, YH ;

Chao, Y ;

Chen, HS ;

Chen, HF ;

Chen, YQ ;

Cheon, BG ;

Chidzik, S ;

Choi, S ;

Choi, Y ;

Dneprovsky, L ;

Doi, Y ;

Dong, LY ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Enomoto, R ;

Everton, CW ;

Fang, F ;

Fujii, H ;

Fujimoto, K ;

Fujita, Y ;

Fukunaga, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :117-232

[2] Observation of new states decaying into Λc+π-π+ [J].

Artuso, M ;

Ayad, R ;

Boulahouache, C ;

Bukin, K ;

Dambasuren, E ;

Karamov, S ;

Majumder, G ;

Moneti, GC ;

Mountain, R ;

Schuh, S ;

Skwarnicki, T ;

Stone, S ;

Wang, JC ;

Wolf, A ;

Wu, J ;

Kopp, S ;

Kostin, M ;

Mahmood, AH ;

Csorna, SE ;

Danko, I ;

McLean, KW ;

Xu, Z ;

Godang, R ;

Bonvicini, G ;

Cinabro, D ;

Dubrovin, M ;

McGee, S ;

Zhou, GJ ;

Lipeles, E ;

Pappas, SP ;

Schmidtler, M ;

Shapiro, A ;

Sun, WM ;

Weinstein, AJ ;

Würthwein, F ;

Jaffe, DE ;

Masek, G ;

Paar, HP ;

Potter, EM ;

Prell, S ;

Asner, DM ;

Eppich, A ;

Hill, TS ;

Morrison, RJ ;

Briere, RA ;

Chen, GP ;

Gritsan, A ;

Alexander, JP ;

Baker, R ;

Bebek, C .

PHYSICAL REVIEW LETTERS, 2001, 86 (20) :4479-4482

[3] Precision measurement of the Λc+ baryon mass -: art. no. 052006 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Karyotakis, Y ;

Lees, JP ;

Poireau, V ;

Tisserand, V ;

Zghiche, A ;

Grauges, E ;

Palano, A ;

Pappagallo, M ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Battaglia, M ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Wenzel, WA ;

Barrett, M ;

Ford, KE ;

Harrison, TJ ;

Hart, AJ .

PHYSICAL REVIEW D, 2005, 72 (05)

[4] Observation of an excited charm baryon Ωc* decaying to Ωc0γ [J].

Aubert, B. ;

Bona, M. ;

Boutigny, D. ;

Couderc, F. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Tisserand, V. ;

Zghiche, A. ;

Grauges, E. ;

Palano, A. ;

Chen, J. C. ;

Qi, N. D. ;

Rong, G. ;

Wang, P. ;

Zhu, Y. S. ;

Eigen, G. ;

Ofte, I. ;

Stugu, B. ;

Abrams, G. S. ;

Battaglia, M. ;

Brown, D. N. ;

Button-Shafer, J. ;

Cahn, R. N. ;

Charles, E. ;

Gill, M. S. ;

Groysman, Y. ;

Jacobsen, R. G. ;

Kadyk, J. A. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Kukartsev, G. ;

Lynch, G. ;

Mir, L. M. ;

Orimoto, T. J. ;

Pripstein, M. ;

Roe, N. A. ;

Ronan, M. T. ;

Wenzel, W. A. ;

del Amo Sanchez, P. ;

Barrett, M. ;

Ford, K. E. ;

Hart, A. J. ;

Harrison, T. J. ;

Hawkes, C. M. ;

Watson, A. T. ;

Held, T. ;

Koch, H. ;

Lewandowski, B. ;

Pelizaeus, M. .

PHYSICAL REVIEW LETTERS, 2006, 97 (23)

[5] Observation of a charmed baryon decaying to D0p at a mass near 2.94 GeV/c2 [J].

Aubert, B. ;

Barate, R. ;

Bona, M. ;

Boutigny, D. ;

Couderc, F. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Tisserand, V. ;

Zghiche, A. ;

Grauges, E. ;

Palano, A. ;

Pappagallo, M. ;

Chen, J. C. ;

Qi, N. D. ;

Rong, G. ;

Wang, P. ;

Zhu, Y. S. ;

Eigen, G. ;

Ofte, I. ;

Stugu, B. ;

Abrams, G. S. ;

Battaglia, M. ;

Brown, D. N. ;

Button-Schafer, J. ;

Cahn, R. N. ;

Charles, E. ;

Day, C. T. ;

Mir, L. M. ;

Oddone, P. J. ;

Orimoto, T. J. ;

Pripstein, M. ;

Roe, N. A. ;

Ronan, M. T. ;

Wenzel, W. A. ;

Barrett, M. ;

Ford, K. E. ;

Harrison, T. J. ;

Hart, A. J. ;

Hawkes, C. M. ;

Morgan, S. E. ;

Watson, A. T. ;

Goetzen, K. ;

Held, T. ;

Koch, H. ;

Lewandowski, B. ;

Pelizaeus, M. ;

Peters, K. ;

Schroeder, T. ;

Steinke, M. .

PHYSICAL REVIEW LETTERS, 2007, 98 (01)

[6]

BRUN R, 1984, DDEE841 CERN

[7] BARYONS IN A RELATIVIZED QUARK-MODEL WITH CHROMODYNAMICS [J].

CAPSTICK, S ;

ISGUR, N .

PHYSICAL REVIEW D, 1986, 34 (09) :2809-2835

[8] Strong decays of charmed baryons in heavy hadron chiral perturbation theory [J].

Cheng, Hai-Yang ;

Chua, Chun-Khiang .

PHYSICAL REVIEW D, 2007, 75 (01)

[9] Observation of new states decaying into ΛcK-π+ and Λc+KS0π- [J].

Chistov, R. ;

Abe, K. ;

Adachi, I. ;

Aihara, H. ;

Anipko, D. ;

Aulchenko, V. ;

Aushev, T. ;

Bakich, A. M. ;

Balagura, V. ;

Barberio, E. ;

Bay, A. ;

Bedny, I. ;

Belous, K. ;

Bitenc, U. ;

Bizjak, I. ;

Blyth, S. ;

Bondar, A. ;

Bozek, A. ;

Bracko, M. ;

Brodzicka, J. ;

Browder, T. E. ;

Chang, M. -C. ;

Chao, Y. ;

Chen, A. ;

Chen, K. -F. ;

Chen, W. T. ;

Cheon, B. G. ;

Choi, Y. ;

Choi, Y. K. ;

Chuvikov, A. ;

Cole, S. ;

Dalseno, J. ;

Danilov, M. ;

Dash, M. ;

Dragic, J. ;

Drutskoy, A. ;

Eidelman, S. ;

Epifanov, D. ;

Gabyshev, N. ;

Garmash, A. ;

Gershon, T. ;

Go, A. ;

Gokhroo, G. ;

Golob, B. ;

Gorisek, A. ;

Ha, H. ;

Haba, J. ;

Hara, T. ;

Hayasaka, K. .

PHYSICAL REVIEW LETTERS, 2006, 97 (16)

[10] SPECTROSCOPY WITH HEAVY-QUARK SYMMETRY [J].

ISGUR, N ;

WISE, MB .

PHYSICAL REVIEW LETTERS, 1991, 66 (09) :1130-1133

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