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Resonance (particle physics)

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418: 146: 189: 302: 297: 459: 118: 17: 488: 154: 292: 267: 452: 478: 39: 433: 483: 353: 445: 203: 386: 89:
or less. It is also used to describe particles in intermediate steps of a decay, so-called
8: 282: 47: 324: 425: 246: 90: 31: 277: 272: 196: 97: 429: 287: 472: 105: 79: 75: 71: 225: 67: 78:. In common usage, "resonance" only describes particles with very short 250: 43: 417: 254: 234: 230: 233:. Pions are generally not considered as "resonances". The charged 63: 245:. Correspondingly, its resonance width is very large, at 149.1 85: 59: 55: 51: 206:
of the particle's resonance width. For example, the charged
207: 112:) of the particle (or its excited state) by the relation 218:. Therefore, its resonance width is very small, about 253:. This amounts to nearly one-fifth of the particle's 157: 121: 38:
is the peak located around a certain energy found in
183: 140: 210:has the second-longest lifetime of any meson, at 470: 202:Thus, the lifetime of a particle is the direct 141:{\displaystyle \Gamma ={\frac {\hbar }{\tau }}} 453: 184:{\displaystyle {\hbar }={\frac {h}{2\pi }}} 460: 446: 82:, mostly high-energy hadrons existing for 298:Resonances in scattering from potentials 14: 471: 303:Relativistic Breit–Wigner distribution 412: 24: 322: 122: 46:. These peaks are associated with 25: 500: 237:has a very short lifetime, about 416: 385:. (Particle Data Group) (2016): 352:. (Particle Data Group) (2016): 325:"What is a Resonance Particle?" 375: 342: 316: 13: 1: 309: 50:, which include a variety of 432:. You can help Knowledge by 27:Concept in scattering theory 7: 260: 40:differential cross sections 10: 505: 411: 293:Feshbach–Fano partitioning 268:Baryon resonance particles 489:Particle physics stubs 428:–related article is a 185: 142: 98:width of the resonance 44:scattering experiments 186: 143: 387:Particle listings – 354:Particle listings – 155: 119: 104:) is related to the 48:subatomic particles 283:Feshbach resonance 181: 138: 479:Scattering theory 441: 440: 179: 136: 91:virtual particles 18:Unstable particle 16:(Redirected from 496: 484:Particle physics 462: 455: 448: 426:particle physics 420: 413: 406: 404: 403: 402: 395: 394: 379: 373: 371: 370: 369: 362: 361: 346: 340: 339: 337: 335: 320: 244: 242: 228: 223: 217: 215: 190: 188: 187: 182: 180: 178: 167: 162: 147: 145: 144: 139: 137: 129: 88: 32:particle physics 21: 504: 503: 499: 498: 497: 495: 494: 493: 469: 468: 467: 466: 410: 409: 401: 399: 398: 397: 393: 391: 390: 389: 388: 380: 376: 368: 366: 365: 364: 360: 358: 357: 356: 355: 347: 343: 333: 331: 323:Dudley, Chris. 321: 317: 312: 307: 278:Giant resonance 273:Roper resonance 263: 240: 238: 221: 219: 213: 211: 197:Planck constant 171: 166: 158: 156: 153: 152: 128: 120: 117: 116: 83: 28: 23: 22: 15: 12: 11: 5: 502: 492: 491: 486: 481: 465: 464: 457: 450: 442: 439: 438: 421: 408: 407: 400: 392: 374: 367: 359: 341: 314: 313: 311: 308: 306: 305: 300: 295: 290: 288:Fano resonance 285: 280: 275: 270: 264: 262: 259: 229:or about 6.11 177: 174: 170: 165: 161: 149: 148: 135: 132: 127: 124: 72:upsilon mesons 26: 9: 6: 4: 3: 2: 501: 490: 487: 485: 482: 480: 477: 476: 474: 463: 458: 456: 451: 449: 444: 443: 437: 435: 431: 427: 422: 419: 415: 414: 405: 384: 378: 372: 351: 345: 330: 326: 319: 315: 304: 301: 299: 296: 294: 291: 289: 286: 284: 281: 279: 276: 274: 271: 269: 266: 265: 258: 256: 252: 248: 236: 232: 227: 209: 205: 200: 198: 194: 175: 172: 168: 163: 159: 133: 130: 125: 115: 114: 113: 111: 107: 106:mean lifetime 103: 99: 94: 92: 87: 81: 77: 73: 69: 68:delta baryons 65: 61: 57: 53: 49: 45: 41: 37: 33: 19: 434:expanding it 423: 382: 377: 349: 344: 332:. Retrieved 329:phy.duke.edu 328: 318: 249:or about 36 201: 192: 150: 109: 101: 95: 74:) and their 35: 29: 381:K.A. Olive 348:K.A. Olive 76:excitations 473:Categories 310:References 255:rest mass 243:10 s 235:rho meson 216:10 s 176:π 160:ℏ 134:τ 131:ℏ 123:Γ 80:lifetimes 62:(such as 36:resonance 334:24 April 261:See also 224:10  84:10  64:nucleons 204:inverse 195:is the 86:seconds 60:hadrons 396:ρ 363:π 212:2.6033 151:where 56:quarks 52:bosons 424:This 383:et al 350:et al 220:2.528 430:stub 336:2017 239:4.41 208:pion 191:and 96:The 58:and 34:, a 251:ZHz 247:MeV 231:MHz 70:or 42:of 30:In 475:: 327:. 257:. 226:eV 199:. 93:. 66:, 54:, 461:e 454:t 447:v 436:. 338:. 241:Ă— 222:Ă— 214:Ă— 193:h 173:2 169:h 164:= 126:= 110:Ď„ 108:( 102:Γ 100:( 20:)

Index

Unstable particle
particle physics
differential cross sections
scattering experiments
subatomic particles
bosons
quarks
hadrons
nucleons
delta baryons
upsilon mesons
excitations
lifetimes
seconds
virtual particles
width of the resonance
mean lifetime
Planck constant
inverse
pion
eV
MHz
rho meson
MeV
ZHz
rest mass
Baryon resonance particles
Roper resonance
Giant resonance
Feshbach resonance

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