X(3872) in lattice QCD with exact chiral symmetry

被引：53

作者：

Chiu, Ting-Wai ^{[1
]}

Hsieh, Tung-Han

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[2] Natl United Univ, Phys Sect, Comiss Gen Educ, Miaoli 36003, Taiwan

来源：

PHYSICS LETTERS B | 2007年 / 646卷 / 2-3期

关键词：

lattice QCD; exact chiral symmetry; exotic mesons; charmed mesons; diquarks;

D O I：

10.1016/j.physletb.2007.01.019

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the mass spectrum of 1(++) exotic mesons with quark content (cq (c) over bar(q) over bar), using molecular and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For the molecular operator {((q) over bar gamma(i)c)((c) over bar gamma(5)q) - ((c) over bar gamma(i)q)((q) over bar gamma 5c)} and the diquark-antidiquark operator {(q(T)C gamma(i)c)((q) over barC gamma(5)(c) over bar (T)) - ((q) over bar C-T gamma(TT)(i))(q(T)C gamma(5)c)), both detect a resonance with mass around 3890 +/- 130 MeV in the limit m(q) -> m(u), which is naturally identified with X(3872). Further, heavier exotic meson resonances with J(PC) = 1(++) are also detected, with quark content (cws) around 4100 +/- 50 MeV. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：95 / 99

页数：5

共 23 条

[1] Observation and properties of the X(3872) decaying to J/ψπ+π- in p(p)over-bar collisions at √s=1.96 TeV -: art. no. 162002 [J].

Abazov, VM ;

Abbott, B ;

Abolins, M ;

Acharya, BS ;

Adams, DL ;

Adams, M ;

Adams, T ;

Agelou, M ;

Agram, JL ;

Ahmed, SN ;

Ahn, SH ;

Alexeev, GD ;

Alkhazov, G ;

Alton, A ;

Alverson, G ;

Alves, GA ;

Anderson, S ;

Andrieu, B ;

Arnoud, Y ;

Askew, A ;

Åsman, B ;

Autermann, C ;

Avila, C ;

Babukhadia, L ;

Bacon, TC ;

Baden, A ;

Baffioni, S ;

Baldin, B ;

Balm, PW ;

Banerjee, S ;

Barberis, E ;

Bargassa, P ;

Baringer, P ;

Barnes, C ;

Barreto, J ;

Bartlett, JF ;

Bassler, U ;

Bauer, D ;

Bean, A ;

Beauceron, S ;

Beaudette, F ;

Begel, M ;

Beri, SB ;

Bernardi, G ;

Bertram, I ;

Besançon, M ;

Besson, A ;

Beuselinck, R ;

Bezzubov, VA ;

Bhat, PC .

PHYSICAL REVIEW LETTERS, 2004, 93 (16) :162002-1

[2]

Abe K., HEPEX0505038

[3]

ABE K, HEPEX050503M

[4] Measurement of the dipion mass spectrum in X(3872)→J/ψπ+π- decays [J].

Abulencia, A ;

Acosta, D ;

Adelman, J ;

Affolder, T ;

Akimoto, T ;

Albrow, MG ;

Ambrose, D ;

Amerio, S ;

Amidei, D ;

Anastassov, A ;

Anikeev, K ;

Annovi, A ;

Antos, J ;

Aoki, M ;

Apollinari, G ;

Arguin, JF ;

Arisawa, T ;

Artikov, A ;

Ashmanskas, W ;

Attal, A ;

Azfar, F ;

Azzi-Bacchetta, P ;

Azzurri, P ;

Bacchetta, N ;

Bachacou, H ;

Badgett, W ;

Barbaro-Galtieri, A ;

Barnes, VE ;

Barnett, BA ;

Baroiant, S ;

Bartsch, V ;

Bauer, G ;

Bedeschi, F ;

Behari, S ;

Belforte, S ;

Bellettini, G ;

Bellinger, J ;

Belloni, A ;

Ben Haim, E ;

Benjamin, D ;

Beretvas, A ;

Beringer, J ;

Berry, T ;

Bhatti, A ;

Binkley, M ;

Bisello, D ;

Bishai, M ;

Blair, RE ;

Blocker, C ;

Bloom, K .

PHYSICAL REVIEW LETTERS, 2006, 96 (10) :1-7

[5] Observation of the narrow state X(3872)→J/ψπ+π- in (p)over-barp collisions at √s=1.96 TeV -: art. no. 072001 [J].

Acosta, D ;

Affolder, T ;

Ahn, MH ;

Akimoto, T ;

Albrow, MG ;

Ambrose, D ;

Amerio, S ;

Amidei, D ;

Anastassov, A ;

Anikeev, K ;

Annovi, A ;

Antos, J ;

Aoki, M ;

Apollinari, G ;

Arguin, JF ;

Arisawa, T ;

Artikov, A ;

Asakawa, T ;

Ashmanskas, W ;

Attal, A ;

Azfar, F ;

Azzi-Bacchetta, P ;

Bacchetta, N ;

Bachacou, H ;

Badgett, W ;

Bailey, S ;

Barbaro-Galtieri, A ;

Barker, G ;

Barnes, VE ;

Barnett, BA ;

Baroiant, S ;

Barone, M ;

Bauer, G ;

Bedeschi, F ;

Behari, S ;

Belforte, S ;

Bell, WH ;

Bellettini, G ;

Bellinger, J ;

Benjamin, D ;

Beretvas, A ;

Bhatti, A ;

Binkley, M ;

Bisello, D ;

Bishai, M ;

Blair, RE ;

Blocker, C ;

Bloom, K ;

Blumenfeld, B ;

Bocci, A .

PHYSICAL REVIEW LETTERS, 2004, 93 (07) :072001-1

[6]

Aubert B, 2005, PHYS REV LETT, V95, DOI [10.1103/PhysRevLett.95.042001, 10.1103/PhysRevLett.95.142001]

[7] Study of the B- → J/ψK-π+π- decay and measurement of the B- → X(3872)K- branching fraction -: art. no. 071103 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Gaillard, JM ;

Hicheur, A ;

Karyotakis, Y ;

Lees, JP ;

Tisserand, V ;

Zghiche, A ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

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 ;

LeClerc, C ;

Lynch, G ;

Merchant, AM ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Shelkov, VG ;

Wenzel, WA ;

Ford, K ;

Harrison, TJ .

PHYSICAL REVIEW D, 2005, 71 (07) :1-7

[8]

Barnes T, 2006, AIP CONF PROC, V814, P735, DOI 10.1063/1.2176573

[9] Y(4260) on the lattice [J].

Chiu, Ting-Wai ;

Hsieh, Tung-Han .

PHYSICAL REVIEW D, 2006, 73 (09)

[10] Baryon masses in lattice QCD with exact chiral symmetry [J].

Chiu, TW ;

Hsieh, TH .

NUCLEAR PHYSICS A, 2005, 755 :471C-474C

← 1 2 3 →