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

[11]

KLEBANOV I, COMMUNICATIO

[12] Overview of the KEKB accelerators [J].

Kurokawa, S ;

Kikutani, E .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 499 (01) :1-7

[13] Charmed baryons in a relativistic quark model [J].

Migura, S. ;

Merten, D. ;

Metsch, B. ;

Petry, H. -R. .

EUROPEAN PHYSICAL JOURNAL A, 2006, 28 (01) :41-53

[14] Observation of an isotriplet of excited charmed baryons decaying to Λc+π -: art. no. 122002 [J].

Mizuk, R ;

Abe, K ;

Aihara, H ;

Akatsu, M ;

Asano, Y ;

Aulchenko, V ;

Aushev, T ;

Bakich, AM ;

Balagura, V ;

Ban, Y ;

Banerjee, S ;

Bedny, I ;

Bitenc, U ;

Bizjak, I ;

Blyth, S ;

Bondar, A ;

Bozek, A ;

Bracko, M ;

Brodzicka, J ;

Browder, TE ;

Chao, Y ;

Chen, A ;

Cheon, BG ;

Chistov, R ;

Choi, SK ;

Choi, Y ;

Chuvikov, A ;

Cole, S ;

Dalseno, J ;

Danilov, M ;

Dash, M ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Fratina, S ;

Gabyshev, N ;

Garmash, A ;

Gershon, T ;

Gokhroo, G ;

Haba, J ;

Hastings, NC ;

Hayasaka, K ;

Hayashii, H ;

Hazumi, M ;

Hokuue, T ;

Hoshi, Y ;

Hou, S ;

Hou, WS ;

Hsiung, YB .

PHYSICAL REVIEW LETTERS, 2005, 94 (12)

[15] Excited states of heavy baryons in the Skyrme model [J].

Oh, Y ;

Park, BY .

PHYSICAL REVIEW D, 1996, 53 (03) :1605-1615

[16]

Pilkuhn H, 1967, INTERACTIONS HADRONS

[17]

Selem A., ARXIVHEPPH0602128

[18] Review of particle physics [J].

Yao, W-M ;

Amsler, C. ;

Asner, D. ;

Barnett, R. M. ;

Beringer, J. ;

Burchat, P. R. ;

Carone, C. D. ;

Caso, C. ;

Dahl, O. ;

D'Ambrosio, G. ;

De Gouvea, A. ;

Doser, M. ;

Eidelman, S. ;

Feng, J. L. ;

Gherghetta, T. ;

Goodman, M. ;

Grab, C. ;

Groom, D. E. ;

Gurtu, A. ;

Hagiwara, K. ;

Hayes, K. G. ;

Hernandez-Rey, J. J. ;

Hikasa, K. ;

Jawahery, H. ;

Kolda, C. ;

Kwon, Y. ;

Mangano, M. L. ;

Manohar, A. V. ;

Masoni, A. ;

Miquel, R. ;

Moenig, K. ;

Murayama, H. ;

Nakamura, K. ;

Navas, S. ;

Olive, K. A. ;

Pape, L. ;

Patrignani, C. ;

Piepke, A. ;

Punzi, G. ;

Raffelt, G. ;

Smith, J. G. ;

Tanabashi, M. ;

Terning, J. ;

Toernqvist, N. A. ;

Trippe, T. G. ;

Vogel, P. ;

Watari, T. ;

Wohl, C. G. ;

Workman, R. L. ;

Zyla, P. A. .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2006, 33 (01) :1-+

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