SCOPUS 정보 검색 플랫폼

European Physical Journal C

Volumn 28, Issue 3, 2003, Pages 305-312

Branching ratios of B → DsK decays in perturbative QCD approach

(2) Lu C D a,b Ukai, K c

a CCAST WORLD LABORATORY (China)

b INSTITUTE OF HIGH ENERGY PHYSICS (China)

c NAGOYA UNIVERSITY (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0038007449 PISSN: 14346044 EISSN: None Source Type: Journal
DOI: 10.1140/epjc/s2003-01150-4 Document Type: Article

Times cited : (62)

References (44)

1
- 0010271127
- M. Wirbel, B. Stech, M. Bauer, Z. Phys. C 29, 637 (1985); M. Bauer, B. Stech, M. Wirbel, Z. Phys. C 34, 103 (1987); L.-L. Chau, H.-Y. Cheng, W.K. Sze, H. Yao, B. Tseng, Phys. Rev. D 43, 2176 (1991); Erratum: D 58, 019902 (1998)
- (1985) Z. Phys. C , vol.29 , pp. 637
- Wirbel, M.¹ Stech, B.² Bauer, M.³

2
- 33750130406
- M. Wirbel, B. Stech, M. Bauer, Z. Phys. C 29, 637 (1985); M. Bauer, B. Stech, M. Wirbel, Z. Phys. C 34, 103 (1987); L.-L. Chau, H.-Y. Cheng, W.K. Sze, H. Yao, B. Tseng, Phys. Rev. D 43, 2176 (1991); Erratum: D 58, 019902 (1998)
- (1987) Z. Phys. C , vol.34 , pp. 103
- Bauer, M.¹ Stech, B.² Wirbel, M.³

3
- 0000738368
- M. Wirbel, B. Stech, M. Bauer, Z. Phys. C 29, 637 (1985); M. Bauer, B. Stech, M. Wirbel, Z. Phys. C 34, 103 (1987); L.-L. Chau, H.-Y. Cheng, W.K. Sze, H. Yao, B. Tseng, Phys. Rev. D 43, 2176 (1991); Erratum: D 58, 019902 (1998)
- (1991) Phys. Rev. D , vol.43 , pp. 2176
- Chau, L.-L.¹ Cheng, H.-Y.² Sze, W.K.³ Yao, H.⁴ Tseng, B.⁵

4
- 0010271127
- Erratum: D 58, 019902 (1998)
- M. Wirbel, B. Stech, M. Bauer, Z. Phys. C 29, 637 (1985); M. Bauer, B. Stech, M. Wirbel, Z. Phys. C 34, 103 (1987); L.-L. Chau, H.-Y. Cheng, W.K. Sze, H. Yao, B. Tseng, Phys. Rev. D 43, 2176 (1991); Erratum: D 58, 019902 (1998)

5
- 1542575151
- A. Ali, G. Kramer, C.D. Lü, Phys. Rev. D 58, 094009 (1998); C.D. Lü, Nucl. Phys. Proc. Suppl. 74, 227 (1999)
- (1998) Phys. Rev. D , vol.58 , pp. 094009
- Ali, A.¹ Kramer, G.² Lü, C.D.³

6
- 0033245373
- A. Ali, G. Kramer, C.D. Lü, Phys. Rev. D 58, 094009 (1998); C.D. Lü, Nucl. Phys. Proc. Suppl. 74, 227 (1999)
- (1999) Nucl. Phys. Proc. Suppl. , vol.74 , pp. 227
- Lü, C.D.¹

7
- 33750264561
- Y.-H. Chen, H.-Y. Cheng, B. Tseng, K.-C. Yang, Phys. Rev. D 60, 094014 (1999); H.-Y. Cheng, K.-C. Yang, Phys. Rev. D 62, 054029 (2000)
- (1999) Phys. Rev. D , vol.60 , pp. 094014
- Chen, Y.-H.¹ Cheng, H.-Y.² Tseng, B.³ Yang, K.-C.⁴

8
- 85037220182
- Y.-H. Chen, H.-Y. Cheng, B. Tseng, K.-C. Yang, Phys. Rev. D 60, 094014 (1999); H.-Y. Cheng, K.-C. Yang, Phys. Rev. D 62, 054029 (2000)
- (2000) Phys. Rev. D , vol.62 , pp. 054029
- Cheng, H.-Y.¹ Yang, K.-C.²

9
- 3342993101
- M. Beneke, G. Buchalla, M. Neubert, C.T. Sachrajda, Phys. Rev. Lett. 83, 1914 (1999); Nucl. Phys. B 591, 313 (2000)
- (1999) Phys. Rev. Lett. , vol.83 , pp. 1914
- Beneke, M.¹ Buchalla, G.² Neubert, M.³ Sachrajda, C.T.⁴

10
- 0000139785
- M. Beneke, G. Buchalla, M. Neubert, C.T. Sachrajda, Phys. Rev. Lett. 83, 1914 (1999); Nucl. Phys. B 591, 313 (2000)
- (2000) Nucl. Phys. B , vol.591 , pp. 313

11
- 17544386112
- Y.-Y. Keum, H.-n. Li, A.I. Sanda, Phys. Lett. B 504, 6 (2001); Phys. Rev. D 63, 054008 (2001)
- (2001) Phys. Lett. B , vol.504 , pp. 6
- Keum, Y.-Y.¹ Li, H.-N.² Sanda, A.I.³

12
- 0034907457
- Y.-Y. Keum, H.-n. Li, A.I. Sanda, Phys. Lett. B 504, 6 (2001); Phys. Rev. D 63, 054008 (2001)
- (2001) Phys. Rev. D , vol.63 , pp. 054008

13
- 0034894257
- C.-D. Lü, K. Ukai, M.-Z. Yang, Phys. Rev. D 63, 074009 (2001); C.-D. Lu, in Proceedings of International Conference on Flavor Physics (ICFP 2001) (World Scientific, 2001), pp. 173-184, hep-ph/0110327
- (2001) Phys. Rev. D , vol.63 , pp. 074009
- Lü, C.-D.¹ Ukai, K.² Yang, M.-Z.³

14
- 0037612690
- World Scientific, hep-ph/0110327
- C.-D. Lü, K. Ukai, M.-Z. Yang, Phys. Rev. D 63, 074009 (2001); C.-D. Lü, in Proceedings of International Conference on Flavor Physics (ICFP 2001) (World Scientific, 2001), pp. 173-184, hep-ph/0110327
- (2001) Proceedings of International Conference on Flavor Physics (ICFP 2001) , pp. 173-184
- Lü, C.-D.¹

15
- 0000205226
- C.-H.V. Chang, H.-n. Li, Phys. Rev. D 55, 5577 (1997); T.-W. Yeh, H.-n. Li, Phys. Rev. D 56, 1615 (1997)
- (1997) Phys. Rev. D , vol.55 , pp. 5577
- Chang, C.-H.V.¹ Li, H.-N.²

16
- 0000437120
- C.-H.V. Chang, H.-n. Li, Phys. Rev. D 55, 5577 (1997); T.-W. Yeh, H.-n. Li, Phys. Rev. D 56, 1615 (1997)
- (1997) Phys. Rev. D , vol.56 , pp. 1615
- Yeh, T.-W.¹ Li, H.-N.²

17
- 33750661614
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2001) Phys. Rev. D , vol.64 , pp. 014019
- Li, H.-N.¹

18
- 0001345144
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2001) Phys. Lett. B , vol.521 , pp. 252
- Mishima, S.¹

19
- 0037165102
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2002) Phys. Lett. B , vol.525 , pp. 240
- Kou, E.¹ Sanda, A.I.²

20
- 0000362929
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2001) Phys. Rev. D , vol.64 , pp. 112002
- Chen, C.-H.¹ Keum, Y.-Y.² Li, H.-N.³

21
- 23044534532
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2002) Eur. Phys. J. C , vol.23 , pp. 275
- Lü, C.-D.¹ Yang, M.Z.²

22
- 0036005463
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2002) Prog. Theor. Phys. , vol.107 , pp. 421
- Sanda, A.I.¹ Ukai, K.²

23
- 0036590896
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2002) Eur. Phys. J. C , vol.24 , pp. 121
- Lü, C.D.¹

24
- 3543005055
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- (2002) Phys. Rev. D , vol.66 , pp. 054013
- Chen, C.-H.¹ Keum, Y.-Y.² Li, H.-N.³

25
- 33750661614
- hep-ph/0202127
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- Nagashima, M.¹ Li, H.-N.²

26
- 33750661614
- hep-ph/0209002
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- Keum, Y.-Y.¹

27
- 33750661614
- hep-ph/0209208; hep-ph/0210127;
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- Phys. Rev. Lett.

28
- 33750661614
- hep-ph/0209014
- H.-n. Li, Phys. Rev. D 64, 014019 (2001); S. Mishima, Phys. Lett. B 521, 252 (2001); E. Kou, A.I. Sanda, Phys. Lett. B 525, 240 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 64, 112002 (2001); C.-D. Lü, M.Z. Yang, Eur. Phys. J. C 23, 275 (2002); A.I. Sanda, K. Ukai, Prog. Theor. Phys. 107, 421 (2002); C.D. Lü, Eur. Phys. J. C 24, 121 (2002); C.-H. Chen, Y.-Y. Keum, H.n. Li, Phys. Rev. D 66, 054013 (2002); M. Nagashima, H.-n. Li, hep-ph/0202127; Y.-Y. Keum, hep-ph/0209002; hep-ph/0209208 (to appear in Phys. Rev. Lett.); hep-ph/0210127; Y.-Y. Keum, A.I. Sanda, hep-ph/0209014 (to appear in Phys. Rev. D)
- Phys. Rev. D
- Keum, Y.-Y.¹ Sanda, A.I.²

29
- 85039667731
- hep-ph/0102013
- H.-n. Li, hep-ph/0102013 (to appear in Phys. Rev. D)
- Phys. Rev. D
- Li, H.-N.¹

30
- 0000468921
- H.-n. Li, B. Tseng, Phys. Rev. D 57, 443 (1998)
- (1998) Phys. Rev. D , vol.57 , pp. 443
- Li, H.-N.¹ Tseng, B.²

31
- 0008149546
- P. Ball, JHEP 09, 005 (1998); JHEP 01, 010 (1999)
- (1998) JHEP , vol.9 , pp. 005
- Ball, P.¹

32
- 84860222296
- P. Ball, JHEP 09, 005 (1998); JHEP 01, 010 (1999)
- (1999) JHEP , vol.1 , pp. 010

33
- 0030519521
- G. Buchalla, A.J. Buras, M.E. Lautenbacher, Rev. Mod. Phys. 68, 1125 (1996)
- (1996) Rev. Mod. Phys. , vol.68 , pp. 1125
- Buchalla, G.¹ Buras, A.J.² Lautenbacher, M.E.³

34
- 85039667182
- Ago Town, Mie Prefecture, Japan, 19-23 February
- K. Ukai, Prepared for 4th International Conference on B Physics and CP Violation (BCP 4), Ago Town, Mie Prefecture, Japan, 19-23 February 2001
- (2001) 4th International Conference on B Physics and CP Violation (BCP 4)
- Ukai, K.¹

35
- 85039665740
- hep-ph/0210289
- T. Kurimoto, H.-n. Li, A.I. Sanda, hep-ph/0210289
- Kurimoto, T.¹ Li, H.-N.² Sanda, A.I.³

36
- 17644448246
- Review of Particle Physics, K. Hagiwara et al., Phys. Rev. D 66, 010001 (2002)
- (2002) Phys. Rev. D , vol.66 , pp. 010001
- Hagiwara, K.¹

37
- 85039667189
- hep-ex/0207077
- Belle Collaboration, P. Krokovny et al., hep-ex/0207077
- Krokovny, P.¹

38
- 85039661636
- hep-ex/0207053
- BaBar Collaboration, B. Aubert et al., hep-ex/0207053
- Aubert, B.¹

39
- 0034899581
- C.-H. Chen, H.-n. Li, Phys. Rev. D 63, 014003 (2001)
- (2001) Phys. Rev. D , vol.63 , pp. 014003
- Chen, C.-H.¹ Li, H.-N.²

40
- 33750533516
- G.P. Lepage, S.J. Brodsky, Phys. Rev. D 22, 2157 (1980); J.D. Bjorken, Nucl. Phys. B Proc. Suppl. 11, 325 (1989)
- (1980) Phys. Rev. D , vol.22 , pp. 2157
- Lepage, G.P.¹ Brodsky, S.J.²

41
- 6144242181
- G.P. Lepage, S.J. Brodsky, Phys. Rev. D 22, 2157 (1980); J.D. Bjorken, Nucl. Phys. B Proc. Suppl. 11, 325 (1989)
- (1989) Nucl. Phys. B Proc. Suppl. , vol.11 , pp. 325
- Bjorken, J.D.¹

42
- 0000283740
- H.-n. Li, B. Melic, Eur. Phys. J. C 11, 695 (1999)
- (1999) Eur. Phys. J. C , vol.11 , pp. 695
- Li, H.-N.¹ Melic, B.²

43
- 0036144325
- T. Kurimoto, H.-n. Li, A.I. Sanda, Phys. Rev. D 65, 014007 (2002)
- (2002) Phys. Rev. D , vol.65 , pp. 014007
- Kurimoto, T.¹ Li, H.-N.² Sanda, A.I.³

44
- 85039659992
- hep-ph/0211272
- H.-n. Li, K. Ukai, hep-ph/0211272
- Li, H.-N.¹ Ukai, K.²

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.